Ray Tubes 12AU7 (Select)
Even Better
The SELECT Collection is built as well as the CORE Collection but sounds even better. This tier far outperforms standard factory tubes.
Hand-selected and tested
Gold pins for corrosion resistance and excellent conduction
A substantial upgrade from standard NOS tubes
Low noise and microphonics
Matched pair (2 tubes) or single tube (1 tube)
Only 4% of the tubes commissioned for production meet our standards for gain and conductance matching
12-month warranty against manufacturing defects
Even Better
The SELECT Collection is built as well as the CORE Collection but sounds even better. This tier far outperforms standard factory tubes.
Hand-selected and tested
Gold pins for corrosion resistance and excellent conduction
A substantial upgrade from standard NOS tubes
Low noise and microphonics
Matched pair (2 tubes) or single tube (1 tube)
Only 4% of the tubes commissioned for production meet our standards for gain and conductance matching
12-month warranty against manufacturing defects
Make Your Good Amp Great
The SELECT Collection boosts your amp noticeably. These tubes bring out better sound, even in beginner models. Each tube is handpicked by our engineers for clarity, texture, and detail. Your music will sound more real, emotional, and precise.
The SELECT Vacuum Tube Difference
The SELECT tubes come from the same batches as our CORE Collection. They stand out for one reason: expert judgment. Our engineers evaluate each tube for sound profile, dynamics, microphonics, gain, conductance, noise, and overall performance. This careful selection ensures only the best tubes make it into the SELECT Collection.
12-Month Warranty
We trust our product. We offer a 12-month warranty on our vacuum tubes. This warranty covers any manufacturing defects.
Technical Specifications
Tube Type: 12AU7 / ECC82 / 6189 / CV4003
Tube Socket: 9-pin
Max Anode Dissipation Power: 2.75 W
Max Screen Dissipation Power: N/A
Output Power in Class A1 Amp (Single Tube): N/A
Output Power in Class AB1 Amp: N/A
Max Anode Voltage: 300 V
Max Screen Voltage: N/A
Max Grid Voltage: ~50 V
Heater Voltage: 6.3 V
Heater Current: 0.3 A
Transconductance: 2.2 mA/V
Amplification Factor: 17
Internal Resistance: 7.7 kΩ
Package Contents
Pair of matched vacuum tubes or single vacuum tube
User handbook featuring burn-in guidelines|
Certificate of authenticity and warranty
