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Mullard CV4004 / 12AX7, Matched Trio
Matched Trio
Matched for both gain and conductance
Short plate, allowing for reduced microphonics (great for combo amps)
High gain and low noise tube
Great for use in Marshall style amps
The CV4004/12AX7 is a high gain, low noise valve with a short plate structure for reduced microphonics. Excellent for use in high gain Marshall pre-amplifier circuits where noise and microphonics can be a problem. Best for guitar amps.