12AX7 SELECT

Tube Pack: Single (1 tube)

Single (1 tube) Matched Pair (2 tubes)

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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 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

Technical Specification

Tube Type: 12AX7 / ECC83 / CV4004
Tube Socket: 9-pin

Max Anode Dissipation Power: 1 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: 1.6 mA/V
Amplification Factor: 100
Internal Resistance: 62.5 kΩ

Package Content

Pair of matched vacuum tubes or single vacuum tube
User handbook featuring burn-in guidelines
Certificate of authenticity and warranty

Compatible Amps

Explore Ray Tubes' Tube Amp Compatibility List

Cheers from Oakland, California

Oakland is where we hang our hats. It’s a city with a history of hard work and artistry, and that’s something we take seriously. Also the tacos. We take those very seriously. 🌮🌮🌮