{"title":"SELECT","description":null,"products":[{"product_id":"ray-tubes-select-12au7-copy","title":"Ray Tubes SELECT 12AU7","description":"\u003ch2\u003eSLECT 12AU7\u003c\/h2\u003e\n\u003cp\u003eIntroduced in 1946, the 12AU7 was the world's first noval (nine-pin) vacuum tube. The 12AU7 is a double triode, consisting of two 6C4 tubes in a single envelope. Before the advent of solid-state electronics, it was valued for its versatility and portability. Nowadays, you'll find it in the pre-amp phase of tube amplifiers, where it functions as a phase inverter or driver.\u003c\/p\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cp\u003eThe Ray Tubes SELECT Collection offers the best tubes you'll ever need. It goes above and beyond the baseline to bring out the best in all your favorites.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned and manufactured by a team with decades of experience\u003c\/li\u003e\n\u003cli\u003eHand-selected by engineers to ensure only the top tubes make the cut\u003c\/li\u003e\n\u003cli\u003eGold pins for durability and longevity\u003c\/li\u003e\n\u003cli\u003eSubstantially more consistent performance than New Old Stock\u003c\/li\u003e\n\u003cli\u003eUnlike NOS and most other new production, covered by the Ray Tubes\u003cbr\u003eOne Year Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSounds Characteristics \u003c\/h2\u003e\n\u003cp\u003eThe SELECT 12AU7 delivers a well-balanced tonal signature with excellent resolution and dynamic sensitivity, resulting in a clear and layered sound.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe bass is tight and well-controlled, with a focus on precision and clarity that makes it especially suitable for fast-paced music.\u003c\/li\u003e\n\u003cli\u003eThe midrange frequencies are clear and well-resolved. Vocals sound natural with distinct layering and detail.\u003c\/li\u003e\n\u003cli\u003eThe treble performance is smooth, bright, and airy. At its best where small dynamic shifts carry the music.\u003c\/li\u003e\n\u003cli\u003eThe dynamics are crisp and well-articulated, excelling at music with powerful rhythms. The soundstage has well-defined layering, enhancing the immersion of the listening experience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAvailable as a single tube ( RT-SL-12AU7-X1 ), matched pair\u003cbr\u003e( RT-SL-12AU7-X2 ), or matched quad ( RT-SL-12AU7-X4 )\u003c\/li\u003e\n\u003cli\u003eUser handbook featuring burn-in guidelines\u003c\/li\u003e\n\u003cli\u003eCertificate of authenticity and warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ray Tubes","offers":[{"title":"Single (1 tube)","offer_id":47520377241684,"sku":null,"price":99.0,"currency_code":"USD","in_stock":true},{"title":"Matched Pair (2 tubes)","offer_id":47520377274452,"sku":null,"price":224.0,"currency_code":"USD","in_stock":true},{"title":"Matched Quad (4 tubes)","offer_id":47520377307220,"sku":null,"price":479.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/7321\/3524\/files\/SELECT12AU7-01.jpg?v=1787063443"},{"product_id":"ray-tubes-select-12ax7-copy","title":"Ray Tubes SELECT 12AX7","description":"\u003ch2\u003eSELECT 12AX7\u003c\/h2\u003e\n\u003cp\u003eThe 12AX7 vacuum tube was introduced in 1947 as a replacement for the earlier 6SL7 family of dual triodes, all of which were used extensively in audio applications. As one of a handful of small signal tubes that have remained in production since their first use, the 12AX7 is commonly found in the pre-amp stage of tube amplifiers and is especially associated with the emerging electric guitar sound of the 1950s.\u003c\/p\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cp\u003eSELECT is the Ray Tubes tier most listeners should start with. Hand-selected, gold-pinned, and consistent enough that the tube stops being the variable in your system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned and manufactured by a team with decades of experience\u003c\/li\u003e\n\u003cli\u003eHand-selected by engineers to ensure only the top tubes make the cut\u003c\/li\u003e\n\u003cli\u003eGold pins for durability and longevity\u003c\/li\u003e\n\u003cli\u003eSubstantially more consistent performance than New Old Stock\u003c\/li\u003e\n\u003cli\u003eUnlike NOS and most other new production, covered by the Ray Tubes\u003cbr\u003eOne Year Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSounds Characteristics \u003c\/h2\u003e\n\u003cp\u003eThe SELECT 12AX7 delivers clear and natural sound, at its best with complex arrangements and material that lives in the mid-to-high frequencies.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe bass has a precise low-end response, making it ideal for fast-paced genres.\u003c\/li\u003e\n\u003cli\u003eThe midrange frequencies are delicate and well-layered. Vocals are impressively expressive, with a natural and authentic sound.\u003c\/li\u003e\n\u003cli\u003eThe treble performance is clear and bright, offering a well-balanced overall sound with abundant detail.\u003c\/li\u003e\n\u003cli\u003eThe dynamics are rich and precise, capturing subtle changes accurately. The soundstage is expansive with a strong sense of space.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAvailable as a single tube ( RT-SL-12AX7-X1 ), matched pair\u003cbr\u003e( RT-SL-12AX7-X2 ), or matched quad ( RT-SL-12AX7-X4 )\u003c\/li\u003e\n\u003cli\u003eUser handbook featuring burn-in guidelines\u003c\/li\u003e\n\u003cli\u003eCertificate of authenticity and warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ray Tubes","offers":[{"title":"Single (1 tube)","offer_id":47520378388564,"sku":null,"price":99.0,"currency_code":"USD","in_stock":true},{"title":"Matched Pair (2 tubes)","offer_id":47520378421332,"sku":null,"price":224.0,"currency_code":"USD","in_stock":true},{"title":"Matched Quad (4 tubes)","offer_id":47520378454100,"sku":null,"price":479.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/7321\/3524\/files\/SELECT12AX7-01.jpg?v=1787065854"},{"product_id":"ray-tubes-select-12at7-copy","title":"Ray Tubes SELECT 12AT7","description":"\u003ch2\u003eSELECT 12AT7\u003c\/h2\u003e\n\u003cp\u003eThe 12AT7 is part of a large family of dual triodes that also includes the common 12AX7 and 12AU7 tubes. Its higher gain and transconductance made it suitable for high frequency applications in devices like TVs and FM radios. In the world of audio, it's commonly used as a driver or phase inverter in push-pull audio circuits.\u003c\/p\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cp\u003eSELECT is the Ray Tubes tier most listeners should start with. Hand-selected, gold-pinned, and consistent enough that the tube stops being the variable in your system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned and manufactured by a team with decades of experience\u003c\/li\u003e\n\u003cli\u003eHand-selected by engineers to ensure only the top tubes make the cut\u003c\/li\u003e\n\u003cli\u003eGold pins for durability and longevity\u003c\/li\u003e\n\u003cli\u003eSubstantially more consistent performance than New Old Stock\u003c\/li\u003e\n\u003cli\u003eUnlike NOS and most other new production, covered by the Ray Tubes\u003cbr\u003eOne Year Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSounds Characteristics \u003c\/h2\u003e\n\u003cp\u003eThe SELECT 12AT7 offers a balanced and natural sound, strongest in the mid-to-high frequencies where vocals and acoustic instruments live.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe bass is tight and well-controlled, emphasizing clarity over deep bass, making it suitable for genres like jazz and light classical.\u003c\/li\u003e\n\u003cli\u003eThe midrange frequencies are warm and natural, excelling at the reproduction of vocals and acoustic instruments.\u003c\/li\u003e\n\u003cli\u003eThe treble performance is clear and well-balanced with rich detail.\u003c\/li\u003e\n\u003cli\u003eThe dynamics are nuanced, accurately representing subtle changes in volume. The soundstage is wide with good positioning, making it ideal for large-scale and complex arrangements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAvailable as a single tube ( RT-SL-12AX7-X1 ), matched pair\u003cbr\u003e( RT-SL-12AX7-X2 ), or matched quad ( RT-SL-12AX7-X4 )\u003c\/li\u003e\n\u003cli\u003eUser handbook featuring burn-in guidelines\u003c\/li\u003e\n\u003cli\u003eCertificate of authenticity and warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ray Tubes","offers":[{"title":"Single (1 tube)","offer_id":47520379109460,"sku":null,"price":99.0,"currency_code":"USD","in_stock":true},{"title":"Matched Pair (2 tubes)","offer_id":47520379142228,"sku":null,"price":224.0,"currency_code":"USD","in_stock":true},{"title":"Matched Quad (4 tubes)","offer_id":47520379174996,"sku":null,"price":479.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/7321\/3524\/files\/SELECT12AT7-01.jpg?v=1787422102"},{"product_id":"ray-tubes-select-6sn7","title":"Ray Tubes SELECT 6SN7","description":"\u003ch2\u003eSELECT 6SN7\u003c\/h2\u003e\n\u003cp\u003eThe 6SN7 vacuum tube is a dual triode usually found in the driver stage of power amps. It has been used in audio since its introduction in 1939, and by 1949 it had become the driver of choice in American builds of the famous Williamson circuit. Beyond audio, it was a crucial component in the world's first digital computer, ENIAC.\u003c\/p\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cp\u003eSELECT is the Ray Tubes tier most listeners should start with. Hand-selected, gold-pinned, and consistent enough that the tube stops being the variable in your system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned and manufactured by a team with decades of experience\u003c\/li\u003e\n\u003cli\u003eHand-selected by engineers to ensure only the top tubes make the cut\u003c\/li\u003e\n\u003cli\u003eGold pins for durability and longevity\u003c\/li\u003e\n\u003cli\u003eSubstantially more consistent performance than New Old Stock\u003c\/li\u003e\n\u003cli\u003eUnlike NOS and most other new production, covered by the Ray Tubes\u003cbr\u003eOne Year Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSounds Characteristics \u003c\/h2\u003e\n\u003cp\u003eThe SELECT 6SN7 offers rich and detailed sound, at its best with jazz, classical, and larger arrangements where dynamic range and scale matter.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe bass is solid and deep, with good range. The low end is fuller, making it suitable for complex genres like jazz and classical music.\u003c\/li\u003e\n\u003cli\u003eThe midrange frequencies are rich and warm. Both male and female vocals sound smooth and inviting, with high levels of detail.\u003c\/li\u003e\n\u003cli\u003eThe treble performance is clear and transparent, offering precision without harshness.\u003c\/li\u003e\n\u003cli\u003eThe dynamic range is wide with accurate reproduction of volume changes. The soundstage exhibits clear imaging and excellent separation, with a strong sense of scale ideal for larger arrangements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAvailable as a single tube ( RT-SL-6SN7-X1 ), matched pair\u003cbr\u003e( RT-SL-6SN7-X2 ), or matched quad ( RT-SL-6SN7-X4 )\u003c\/li\u003e\n\u003cli\u003eUser handbook featuring burn-in guidelines\u003c\/li\u003e\n\u003cli\u003eCertificate of authenticity and warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ray Tubes","offers":[{"title":"Single (1 tube)","offer_id":47520447856724,"sku":null,"price":81.0,"currency_code":"USD","in_stock":true},{"title":"Matched Pair (2 tubes)","offer_id":47520447889492,"sku":null,"price":186.0,"currency_code":"USD","in_stock":true},{"title":"Matched Quad (4 tubes)","offer_id":47520447922260,"sku":null,"price":407.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/7321\/3524\/files\/SELECT6SN7-01.jpg?v=1787422071"},{"product_id":"ray-tubes-select-kt88","title":"Ray Tubes SELECT KT88","description":"\u003ch2\u003eSELECT KT88\u003c\/h2\u003e\n\u003cp\u003eThe KT88 is a beam tetrode introduced in 1956 as a variant of its smaller cousin, the KT66. Its name is derived from kinkless tetrode, an earlier name for the beam tetrode, and it's been popular in high-fidelity stereo systems since its introduction. Since New Old Stock of the KT88 is especially rare, Ray Tubes is proud to offer brand-new KT88 vacuum\u003cbr\u003etubes.\u003c\/p\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cp\u003eSELECT is the Ray Tubes tier most listeners should start with. Hand-selected, gold-pinned, and consistent enough that the tube stops being the variable in your system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned and manufactured by a team with decades of experience\u003c\/li\u003e\n\u003cli\u003eHand-selected by engineers to ensure only the top tubes make the cut\u003c\/li\u003e\n\u003cli\u003eGold pins for durability and longevity\u003c\/li\u003e\n\u003cli\u003eSubstantially more consistent performance than New Old Stock\u003c\/li\u003e\n\u003cli\u003eUnlike NOS and most other new production, covered by the Ray Tubes\u003cbr\u003eOne Year Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSounds Characteristics \u003c\/h2\u003e\n\u003cp\u003eThe SELECT KT88 excels at powerful bass and high-resolution sound, built for the low-frequency demands of rock and symphonic orchestras.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe bass is solid with a powerful deep end, suitable for highly dynamic music like rock and symphonic orchestras.\u003c\/li\u003e\n\u003cli\u003eThe midrange frequencies are delicate and multi-layered with a warm tone. Vocals and strings in particular excel.\u003c\/li\u003e\n\u003cli\u003eThe treble performance is clear with very high resolution and rich but not harsh details.\u003c\/li\u003e\n\u003cli\u003eThe dynamic range is very wide, while the soundstage is wide and deep with extremely accurate positioning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAvailable as a single tube ( RT-SL-KT88-X1 ), matched pair\u003cbr\u003e( RT-SL-KT88-X2 ), or matched quad ( RT-SL-KT88-X4 )\u003c\/li\u003e\n\u003cli\u003eUser handbook featuring burn-in guidelines\u003c\/li\u003e\n\u003cli\u003eCertificate of authenticity and warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ray Tubes","offers":[{"title":"Single (1 tube)","offer_id":47528341569620,"sku":null,"price":81.0,"currency_code":"USD","in_stock":true},{"title":"Matched Pair (2 tubes)","offer_id":47528341602388,"sku":null,"price":186.0,"currency_code":"USD","in_stock":true},{"title":"Matched Quad (4 tubes)","offer_id":47528341635156,"sku":null,"price":407.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/7321\/3524\/files\/SELECTKT88-01.jpg?v=1787234744"},{"product_id":"ray-tubes-select-el34","title":"Ray Tubes SELECT EL34","description":"\u003ch2\u003eSELECT EL34\u003c\/h2\u003e\n\u003cp\u003eThe EL34 is a power pentode vacuum tube that was introduced by Mullard in 1955 and is usually found in an amplifier's final output stage. Befitting its British origins, the EL34 was commonly used in amps built by companies like Marshall and Vox, and as a result it became associated with British music of that era.\u003c\/p\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cp\u003eSELECT is the Ray Tubes tier most listeners should start with. Hand-selected, gold-pinned, and consistent enough that the tube stops being the variable in your system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned and manufactured by a team with decades of experience\u003c\/li\u003e\n\u003cli\u003eHand-selected by engineers to ensure only the top tubes make the cut\u003c\/li\u003e\n\u003cli\u003eGold pins for durability and longevity\u003c\/li\u003e\n\u003cli\u003eSubstantially more consistent performance than New Old Stock\u003c\/li\u003e\n\u003cli\u003eUnlike NOS and most other new production, covered by the Ray Tubes\u003cbr\u003eOne Year Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSounds Characteristics \u003c\/h2\u003e\n\u003cp\u003eThe SELECT EL34 offers powerful bass and rich mid-to-high frequencies, balanced and detailed across the large contrasts of rock and electronic music.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe bass has a precise low-end response, making it ideal for\u003cbr\u003efast-paced genres.\u003c\/li\u003e\n\u003cli\u003eThe midrange frequencies are delicate and well-layered.\u003cbr\u003eVocals are impressively expressive, with a natural and\u003cbr\u003eauthentic sound.\u003c\/li\u003e\n\u003cli\u003eThe treble performance is clear and bright, offering a well-\u003cbr\u003ebalanced overall sound with abundant detail.\u003c\/li\u003e\n\u003cli\u003eThe dynamics are rich and precise, capturing subtle changes\u003cbr\u003eaccurately. The soundstage is expansive with a strong sense\u003cbr\u003eof space.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAvailable as a single tube ( RT-SL-EL34-X1 ), matched pair\u003cbr\u003e( RT-SL-EL34-X2 ), or matched quad ( RT-SL-EL34-X4 )\u003c\/li\u003e\n\u003cli\u003eUser handbook featuring burn-in guidelines\u003c\/li\u003e\n\u003cli\u003eCertificate of authenticity and warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ray Tubes","offers":[{"title":"Single (1 tube)","offer_id":47528351301716,"sku":null,"price":81.0,"currency_code":"USD","in_stock":true},{"title":"Matched Pair (2 tubes)","offer_id":47528351334484,"sku":null,"price":186.0,"currency_code":"USD","in_stock":true},{"title":"Matched Quad (4 tubes)","offer_id":47528351367252,"sku":null,"price":407.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/7321\/3524\/files\/SELECTEL34-01.jpg?v=1787235473"},{"product_id":"ray-tubes-select-el84","title":"Ray Tubes SELECT EL84","description":"\u003ch2\u003eSELECT EL84\u003c\/h2\u003e\n\u003cp\u003eThe EL84 is a power pentode vacuum tube introduced in 1953. Its original purpose was to eliminate the need for a separate driver tube in cheap radio equipment, but it quickly found a place in music history as a component in guitar amps like the legendary Vox AC30, favored by The Beatles, The Rolling Stones, Queen, and countless other bands.\u003c\/p\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cp\u003eSELECT is the Ray Tubes tier most listeners should start with. Hand-selected, gold-pinned, and consistent enough that the tube stops being the variable in your system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned and manufactured by a team with decades of experience\u003c\/li\u003e\n\u003cli\u003eHand-selected by engineers to ensure only the top tubes make the cut\u003c\/li\u003e\n\u003cli\u003eGold pins for durability and longevity\u003c\/li\u003e\n\u003cli\u003eSubstantially more consistent performance than New Old Stock\u003c\/li\u003e\n\u003cli\u003eUnlike NOS and most other new production, covered by the Ray Tubes\u003cbr\u003eOne Year Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSounds Characteristics \u003c\/h2\u003e\n\u003cp\u003eThe SELECT EL84 provides a more detailed and layered sound, with the resolution and soundstage width that larger arrangements need.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe bass has good depth with a balanced and impactful low\u003cbr\u003eend.\u003c\/li\u003e\n\u003cli\u003eThe midrange frequencies are fuller and more refined, with\u003cbr\u003erich detail and warmth, especially when reproducing male\u003cbr\u003evocals.\u003c\/li\u003e\n\u003cli\u003eThe treble performance is clear and smooth, remaining\u003cbr\u003efatigue-free even over long listening sessions.\u003c\/li\u003e\n\u003cli\u003eThe dynamic range is expansive, with a wide and well-defined\u003cbr\u003esoundstage suitable for larger arrangements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAvailable as a single tube ( RT-SL-EL84-X1 ), matched pair\u003cbr\u003e( RT-SL-EL84-X2 ), or matched quad ( RT-SL-EL84-X4 )\u003c\/li\u003e\n\u003cli\u003eUser handbook featuring burn-in guidelines\u003c\/li\u003e\n\u003cli\u003eCertificate of authenticity and warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ray Tubes","offers":[{"title":"Single (1 tube)","offer_id":47528353890388,"sku":null,"price":99.0,"currency_code":"USD","in_stock":true},{"title":"Matched Pair (2 tubes)","offer_id":47528353923156,"sku":null,"price":224.0,"currency_code":"USD","in_stock":true},{"title":"Matched Quad (4 tubes)","offer_id":47528353955924,"sku":null,"price":479.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/7321\/3524\/files\/SELECTEL84-01.jpg?v=1787235918"},{"product_id":"ray-tubes-select-300b","title":"Ray Tubes SELECT 300B","description":"\u003ch2\u003eSELECT 300B\u003c\/h2\u003e\n\u003cp\u003eThe 300B is a legendary tube. Introduced in 1938, it powered the cinemas of Hollywood's Golden Age. Audiophiles have treasured it for decades for its low noise and reliability. Ray Tubes is proud to introduce its take on a classic.\u003c\/p\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cp\u003eSELECT is the Ray Tubes tier most listeners should start with. Hand-selected, gold-pinned, and consistent enough that the tube stops being the variable in your system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned and manufactured by a team with decades of experience\u003c\/li\u003e\n\u003cli\u003eHand-selected by engineers to ensure only the top tubes make the cut\u003c\/li\u003e\n\u003cli\u003eGold pins for durability and longevity\u003c\/li\u003e\n\u003cli\u003eSubstantially more consistent performance than New Old Stock\u003c\/li\u003e\n\u003cli\u003eUnlike NOS and most other new production, covered by the Ray Tubes\u003cbr\u003eOne Year Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSounds Characteristics \u003c\/h2\u003e\n\u003cp\u003eThe SELECT 300B captures the heart of what makes the 300B tube legendary, with lush mids, graceful highs, and a coherent, musical bass foundation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe bass is controlled and cohesive, with moderate extension and just the right amount of body. Ideal for genres like acoustic, jazz, and classical.\u003c\/li\u003e\n\u003cli\u003eThe midrange is where the SELECT 300B truly excels. Rich, full-bodied tonal character with a touch of warmth. Vocals are especially well rendered, from baritone to soprano.\u003c\/li\u003e\n\u003cli\u003eThe treble delivers the characteristic smoothness of the 300B, with layered extension and a natural sense of sparkle. A soft warmth in the upper register gives strings and female vocals a refined presence.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAvailable as a single tube ( RT-SL-300B-X1 ), matched pair\u003cbr\u003e( RT-SL-300B-X2 ), or matched quad ( RT-SL-300B-X4 )\u003c\/li\u003e\n\u003cli\u003eUser handbook featuring burn-in guidelines\u003c\/li\u003e\n\u003cli\u003eCertificate of authenticity and warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ray Tubes","offers":[{"title":"Single (1 tube)","offer_id":47528628584532,"sku":null,"price":239.0,"currency_code":"USD","in_stock":true},{"title":"Matched Pair (2 tubes)","offer_id":47528628617300,"sku":null,"price":529.0,"currency_code":"USD","in_stock":true},{"title":"Matched Quad (4 tubes)","offer_id":47528628650068,"sku":null,"price":1099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/7321\/3524\/files\/SELECT300B-01.jpg?v=1787237183"},{"product_id":"ray-tubes-select-2a3","title":"Ray Tubes SELECT 2A3","description":"\u003ch2\u003eSELECT 2A3\u003c\/h2\u003e\n\u003cp\u003eThe 2A3 was introduced by RCA in the 1930s for use in large radios, public address systems, and early hi-fi setups. Despite its notoriously complex filament, the 2A3 saw widespread use in military applications and in the post-war hi-fi boom. It was also a favorite of Paul Klipsch, who in 1946 invented his namesake Klipschorn loudspeaker.\u003c\/p\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cp\u003eSELECT is the Ray Tubes tier most listeners should start with. Hand-selected, gold-pinned, and consistent enough that the tube stops being the variable in your system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned and manufactured by a team with decades of experience\u003c\/li\u003e\n\u003cli\u003eHand-selected by engineers to ensure only the top tubes make the cut\u003c\/li\u003e\n\u003cli\u003eGold pins for durability and longevity\u003c\/li\u003e\n\u003cli\u003eSubstantially more consistent performance than New Old Stock\u003c\/li\u003e\n\u003cli\u003eUnlike NOS and most other new production, covered by the Ray Tubes\u003cbr\u003eOne Year Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSounds Characteristics \u003c\/h2\u003e\n\u003cp\u003eThe SELECT 2A3 takes the iconic 2A3 and adds the refinement and tonal balance that define SELECT. Whether in low-power amps or high-fidelity systems, the SELECT 2A3 brings resolution and a natural, unforced tone to acoustic and vocal recordings.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe bass extension is moderate but well-controlled. Kick drums, double bass, and cellos sound clean and coherent.\u003c\/li\u003e\n\u003cli\u003eThe midrange frequencies offer gently warm tonality, with an outstanding sense of resolution. Voices and instruments emerge naturally from the soundstage with a sense of air and dimensionality.\u003c\/li\u003e\n\u003cli\u003eThe treble performance offers excellent extension without excessive coloration. Details are precise yet never fatiguing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAvailable as a single tube ( RT-SL-2A3-X1 ), matched pair\u003cbr\u003e( RT-SL-2A3-X2 ), or matched quad ( RT-SL-2A3-X4 )\u003c\/li\u003e\n\u003cli\u003eUser handbook featuring burn-in guidelines\u003c\/li\u003e\n\u003cli\u003eCertificate of authenticity and warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ray Tubes","offers":[{"title":"Single (1 tube)","offer_id":47528729182292,"sku":null,"price":185.0,"currency_code":"USD","in_stock":true},{"title":"Matched Pair (2 tubes)","offer_id":47528729215060,"sku":null,"price":399.0,"currency_code":"USD","in_stock":true},{"title":"Matched Quad (4 tubes)","offer_id":47528729247828,"sku":null,"price":839.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/7321\/3524\/files\/SELECT2A3-01.jpg?v=1787237601"},{"product_id":"ray-tubes-select-6sl7","title":"Ray Tubes SELECT 6SL7","description":"\u003ch2\u003eSELECT 6SL7\u003c\/h2\u003e\n\u003cp\u003eThe 6SL7 is a high-mu variant of the more common 6SN7. Like many tubes, it was used extensively for military purposes during World War II, but slowly fell out of use in the following decades. Starting in the 1970s, renewed interest from the Japanese tube audio scene eventually led to a resurgence in 6SL7 popularity.\u003c\/p\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cp\u003eSELECT is the Ray Tubes tier most listeners should start with. Hand-selected, gold-pinned, and consistent enough that the tube stops being the variable in your system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned and manufactured by a team with decades of experience\u003c\/li\u003e\n\u003cli\u003eHand-selected by engineers to ensure only the top tubes make the cut\u003c\/li\u003e\n\u003cli\u003eGold pins for durability and longevity\u003c\/li\u003e\n\u003cli\u003eSubstantially more consistent performance than New Old Stock\u003c\/li\u003e\n\u003cli\u003eUnlike NOS and most other new production, covered by the Ray Tubes\u003cbr\u003eOne Year Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSounds Characteristics \u003c\/h2\u003e\n\u003cp\u003eThe SELECT 6SL7 delivers a refined and engaging sonic character that faithfully captures the essence of the classic 6SL7 sound while offering modern improvements in clarity and balance. Ideal for preamp stages, vocal-focused systems, or high-fidelity tube setups.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe bass is more relaxed than comparable tubes, with good definition, control, and articulation contributing to a cohesive soundstage.\u003c\/li\u003e\n\u003cli\u003eThe midrange frequencies are the standout strength, offering a balanced tonal density. Captures the nuances of vocals, violins, and cellos, while striking a pleasing balance between warmth and detail.\u003c\/li\u003e\n\u003cli\u003eThe treble performance is spacious and non-fatiguing, with a gently rounded top-end. Ideal for systems prioritizing musicality and comfort.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAvailable as a single tube ( RT-SL-6SL7-X1 ) or matched pair\u003cbr\u003e( RT-SL-6SL7-X2 )\u003c\/li\u003e\n\u003cli\u003eUser handbook featuring burn-in guidelines\u003c\/li\u003e\n\u003cli\u003eCertificate of authenticity and warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ray Tubes","offers":[{"title":"Single (1 tube)","offer_id":47528980545620,"sku":null,"price":99.0,"currency_code":"USD","in_stock":true},{"title":"Matched Pair (2 tubes)","offer_id":47528980578388,"sku":null,"price":224.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/7321\/3524\/files\/SELECT6SL7-01.jpg?v=1787238098"},{"product_id":"ray-tubes-select-5u4","title":"Ray Tubes SELECT 5U4","description":"\u003ch2\u003eSELECT 5U4\u003c\/h2\u003e\n\u003cp\u003eThe 5U4 is a common full-wave rectifier tube used in power supplies to convert alternating current to direct current. Its twin-diode design uses a shared cathode and two anodes to convert both halves of the AC cycle. Rectifiers like the 5U4 are sometimes overlooked by audiophiles, but like power and signal tubes, they can greatly influence the sound of a tube amplifier.\u003c\/p\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cp\u003eSELECT is the Ray Tubes tier most listeners should start with. Hand-selected, gold-pinned, and consistent enough that the tube stops being the variable in your system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned and manufactured by a team with decades of experience\u003c\/li\u003e\n\u003cli\u003eHand-selected by engineers to ensure only the top tubes make the cut\u003c\/li\u003e\n\u003cli\u003eGold pins for durability and longevity\u003c\/li\u003e\n\u003cli\u003eSubstantially more consistent performance than New Old Stock\u003c\/li\u003e\n\u003cli\u003eUnlike NOS and most other new production, covered by the Ray Tubes\u003cbr\u003eOne Year Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSounds Characteristics\u003c\/h2\u003e\n\u003cp\u003eThe SELECT 5U4 helps create a sonic profile that is smooth on top, full through the midrange, and grounded in natural, unforced bass. Its contribution is subtle but essential, enhancing the musicality, depth, and coherence of any tube- based system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe bass is characterized by composure and textural integrity, with excellent rhythm stability integrating seamlessly into the soundstage.\u003c\/li\u003e\n\u003cli\u003eThe midrange frequencies impart a sense of richness and organic flow. The SELECT 5U4's inherent smoothness allows instruments like piano, guitar, and saxophone to show their warmth and clarity.\u003c\/li\u003e\n\u003cli\u003eThe treble performance is smooth and refined, reducing the grain and edginess often associated with more aggressive rectifiers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAvailable as a single tube ( RT-SL-5U4-X1 )\u003c\/li\u003e\n\u003cli\u003eUser handbook featuring burn-in guidelines\u003c\/li\u003e\n\u003cli\u003eCertificate of authenticity and warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ray Tubes","offers":[{"title":"Default Title","offer_id":47539139805268,"sku":null,"price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/7321\/3524\/files\/SELECT5U4-02.jpg?v=1787333596"}],"url":"https:\/\/prospercables.com\/collections\/select.oembed","provider":"Prosper Cables ","version":"1.0","type":"link"}