Riverstone Audio - Tested/Matched Pair (2 Tubes) 7-Pin JAN 5654W Fully-Tested Vacuum Tubes - Upgrade for 6AK5 / 6J1 / 6J1P / EF95 - JAN 5654W Platinum Grade Pair

Riverstone Audio - Tested/Matched Pair (2 Tubes) 7-Pin JAN 5654W Fully-Tested Vacuum Tubes - Upgrade for 6AK5 / 6J1 / 6J1P / EF95 - JAN 5654W Platinum Grade Pair

Q: will this replace 6K4 i bought a headphone amp on here and it list this tube as a replacement for 6K4 so will this work

5654W tubes are not a direct substitute - however, certain hybrid circuits using the Chinese 6K4 tube are designed such that several other 7-pin pentodes can be used as replacements Note that there is also a vintage Western tube that is also refered to as a "6K4 tube:; this tube is a sub-miniature TRIODE and IS NOT a substitute for the Chinese 6K4 tube as they have much different electrical characteristics and physical connections (the vintage US-manufactured 6K4 triode has electrical leads that are soldered to a circuit). The closest Western equivalent to a Chinese-manufactured 6K4 tube is the vintage 6BA6/EF93 pentode. Again, as mentioned earlier, some headphone amps and tube buffers that are available on Amazon have hybrid circuits that allow using several different 7-pin pentode tubes in place of the Chinese 6K4; including 5654/6AK5/6J1 tubes. Before ordering any tube, please check directly with the amp or buffer seller to verify that your particular amp or buffer model can utilize other 7-pin pentode tubes. Best regards, James at RIverstone Audio

Q: Do these riverstone audio - tested/matched pair (2 tubes) 7-pin ge jan 5654w work for my little dot mk1 + and my little dot mk ii as driver tubes ?

Yes, GE JAN 5654W tubes are excellent driver tubes for both the Little Dot mk1+ and Little Dot mk ii headphone amps. We have several of the Little Dot amps in our workshop and have tested these tubes, and many other US as well as Russian tube brands, extensively in both the mk 1+ and mk II; when properly chosen the JAN 5654W consistently rank the highest in terms of sound quality and low noise level. The test parameters we use during a portion of the electrical parameter testing were chosen based on the circuit requirements of the mk 1+ and mk II headphone amps. James at Riverstone Audio

Q: Do these tubes come with all the lettering intact or is the lettering worn off

We only sell vintage tubes that have good quality lettering. We inspect each tube to make certain that the lettering (tube type, manufacturer and date code) is readable on a tube - if it does not meet our requirements we simply do not sell the tube. The lettering will not always be "perfect", but it will generally be in very good condition. As background, the lettering that was used on many vintage US-manufactured tubes was often applied by silk-screen printing, which is less than ideal in regards to abrasion resistance of the lettering during shipping and routine handling. During shipping, surface abrasion, caused by movement of tubes within their boxes can damage to the print. In addition to abrasion during shipping, improper handling and cleaning of tubes can significantly degrade the quality of the 30+ year old lettering on 5654W tubes. To help preserve the lettering on the 5654W tubes we sell, we utilize thick EVA pads to prevent tubes from moving in their boxes. The EVA also helps absorb vibrations and impacts during shipping. We have gone the extra mile to provide good quality tubes, and want to make certain that the tubes you receive are protected from damage during shipment. If you ever receive tubes from Riverstone Audio that you are not completely satisfied with simply contact us for a refund or replacement. James, RIverstone Audio

Product ID: 24322238

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Details

Brand
Riverstone
Material
Glass
Color
Silver
Maximum Pressure
7 Bars
Nominal Wall Thickness
1.3 mm
UPC
763769918220

🎯Matched within 3% for precision

🔊Low-noise for pristine audio

🛡️3-year no-nonsense warranty

Frequently Bought Together

Riverstone Audio - Tested/Matched Pair (2 Tubes) 7-Pin JAN 5654W Fully-Tested Vacuum Tubes - Upgrade for 6AK5 / 6J1 / 6J1P / EF95 - JAN 5654W Platinum Grade Pair

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Description

🎶 Elevate your sound with precision-matched platinum tubes — hear the difference, feel the legacy!

PRECISION MATCHED PAIR - Each tube pair is matched within 3% for plate current and mutual conductance, ensuring flawless stereo balance and sonic clarity.
PLATINUM GRADE PERFORMANCE - Guaranteed NOS-level performance with micro-mho ratings above 4500 and plate current exceeding 6.6 mA for superior audio fidelity.
RIGOROUS LIFE SOUND TESTING - Every tube passes specialized life and audio sound tests, promising reliability and rich, authentic tube warmth.
TRANSPARENT QUALITY ASSURANCE - Comes with detailed data labels showing measured plate current and mutual conductance for confident, informed use.
DIRECT UPGRADE FOR CLASSIC TUBES - Perfectly compatible replacement for 6AK5, 6J1, 6J1P, EF95 tubes—upgrade your vintage gear without risk of damage.

Riverstone Audio’s Platinum Grade JAN 5654W vacuum tubes are a meticulously tested and matched pair of 7-pin low-noise tubes designed as premium upgrades for 6AK5, 6J1, and EF95 families. Each tube guarantees NOS-level performance with plate current above 6.6 mA and mutual conductance over 4500 micro-mho, backed by a 3-year warranty and rigorous life and audio testing to ensure exceptional reliability and sonic purity.

Specifications

Maximum Pressure	7 Bars
Nominal Wall Thickness	1.3 mm
Material	Glass

Have a Question? See What Others Asked

Do I just plug them in and start playing music or let them burn in for 10 hours first?

will this replace 6K4 i bought a headphone amp on here and it list this tube as a replacement for 6K4 so will this work

Do these riverstone audio - tested/matched pair (2 tubes) 7-pin ge jan 5654w work for my little dot mk1 + and my little dot mk ii as driver tubes ?

Do these tubes come with all the lettering intact or is the lettering worn off

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