Meet the Ray Tubes KT88 SELECT

Meet the SELECT KT88 vacuum tubes from Ray Tubes. Handpicked for sound quality, dynamics, and low noise, they’re bona fide elite. Only the top 5% make the cut, so no duds here. They’re now available on Apos in matching pairs and quads, with singles to follow soon.

The SELECT Difference

Ray Tubes’ engineers handpick each tube, carefully examining every little detail—sound profile, dynamics, noise levels, and more. If it doesn’t impress them, it doesn’t get the SELECT label. Here’s what sets them apart:

• Sound Profile: Each tube is selected for its superior sound quality, ensuring a rich and immersive audio experience.
• Dynamics: Tubes are tested for dynamic range, ensuring powerful and clear sound reproduction.
• Microphonics: Only tubes with minimal microphonic noise are chosen, ensuring a cleaner signal.
• Gain and Conductance: Tubes are selected for optimal gain and conductance, providing strong and stable performance.
• Noise Levels: Only tubes with the lowest noise levels make the cut, ensuring the cleanest possible audio signal.

Gold Pins: Old School Cool

Sure, gold pins make these tubes cool enough for Isaac Hayes, but they also guarantee superior conductivity and resistance to oxidation for long-term performance.

Superior Sound, Secured

Ray Tubes is so confident in their SELECT KT88 tubes that they back them with a 12-month warranty. That’s right—a full year of peace of mind. The warranty reflects Ray Tubes’ confidence in their vacuum tubes’ performance and durability, safeguarding against any manufacturing defects and ensuring that your purchase is protected.

Does Your Amp Take EL34?

If you’re wondering if your amp uses KT88 tubes, just check Ray Tubes’ tube compatibility list .

Head to the product page

Head on over to the Ray KT88 SELECT product page for more details, and if you need more information please contact our dedicated Support Team via live chat online or email us at support@apos.audio.

As with all purchases, when you buy from us you get the Apos Promise for Free Priority Shipping , an Extended 2-Year Warranty , a 45-Day Return Policy , and our 30-Day Lowest Price Match .