Ray Vacuum Tube – 300B Select

Product highlights

• Hand-selected and tested
• Gold pins for corrosion resistance and excellent conduction
• A substantial upgrade from standard NOS tubes
• Low noise and microphonics
• Matched quad (4 tubes) or pair (2 tubes) or single tube (1 tube)
• Only 5% of the tubes commissioned for production meet our standards for gain and conductance matching
• 12-month warranty against manufacturing defects

The 300B is a legendary tube. Introduced in 1938, it powered the cinemas of Hollywoodʼs Golden Age. Audiophiles have treasured it for decades for its low noise and good reliability. Ray Tubes is proud to introduce our take on a classic.

The SELECT 300B captures the heart of what makes the 300B tube legendary—lush mids, graceful highs, and a coherent, musical bass foundation.

• Bass is controlled and cohesive, with moderate extension and just the right amount of body. Ideal for genres like acoustic, jazz, and classical.
• The 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.
• Delivers the characteristic smoothness of the 300B, with a layered treble extension and a natural sense of sparkle. A soft warmth in the upper register gives strings and female vocals a refined presence.

The Ray Tubes SELECT Collection offers the best tubes youʼll ever need. It goes above and beyond the baseline to bring out the best in all your favourites.

• Designed and manufactured by a team with decades of experience
• Hand-selected by engineers—only the top tubes make the cut
• Gold pins for durability and longevity
• Substantially more consistent performance than New Old Stock
• Unlike NOS and most other new production, covered by the Ray Tubes One Year Warranty

Books have been written about the countless ways vacuum tubes can and do fail. With most manufacturers, and all New Old Stock, a tube failure leaves the user high and dry. Ray Tubes is different. All Ray Tubes products are backed by the Ray Tubes One Year Warranty, which covers manufacturing defects for twelve months from the date of purchase.