Ray Tubes SELECT 5U4 tubes are now available. As part of our SELECT collection, they’re the best 5U4 vacuum tube you’ll ever need, with more involved production and stricter selection criteria. Let them bring out the best in all your favorites.
The 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.
The Ray Tubes SELECT Collection
We only sell the best vacuum tubes in each of our manufacturing batches. SELECT tubes? They're the best of those.
Unlock Your Amp's Full Potential
Bad tubes hold your amp back. Good ones help it achieve its very best. We know the SELECT Collection will sound incredible in your amp because it sounds incredible in our amp. (Testing vacuum tubes in real-life audio equipment shouldn't be revolutionary, but here we are.) Give your amp an instant upgrade with a SELECT tube.
Vetted By Real People
Most new tubes aren’t manufactured with audio in mind. Ours are. All our tubes are vetted by sound engineers as part of our rigorous quality control process to ensure reliable, consistent performance in audio equipment. The SELECT Collection goes a step further with even stricter selection standards, ensuring that only the best tubes receive the coveted SELECT label.
The Ray Tubes One Year Warranty
Tubes fail in all sorts of ways. That’s why warranties are rare. We have one anyway, because we put in the hard work and we stand by our products. All our tubes come with a one year warranty against manufacturing defects.
Find A Retail Partner Near You
SELECT 5U4 tubes are available through our ever-growing network of retail partners. Head on over to our retail partners page to find one near you.
What’s next?
There’s plenty more to come. Stay tuned for more exciting announcements.
