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JJ Tesla / 6072A/12AY7-JJ TESLA
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All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by the UK only.
All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by the UK only.
The JJ factory was born out of the ashes of the former Tesla factory.
They currently make a range of High quality valves based on some of Tesla most famous designs.
The 12AY7 6072A JJ is a low gain signal valve that was used in early 50's Fender amplifiers. This valve is normally put in the first gain position to lower the gain of a pre amp circuit. This will reduce the gain by around 50-60% so will give your amplifier more clean headroom. This valve is also used by Harmonica plays to reduce feedback that they have problems with. This valve produces a warm rounded sound with low gain which will clean up and tame the harshest of pre amps.
We offer two options:
1) Factory tested from the JJ factory
2) Balanced -matched triode sections for Phase splitter, Audio & Tube microphones
All JJ Balanced preamp valves are Dynamically Drive tested under real working condition have passed the following tests:
Gain (db) Drive Tested
Transconductance (gm) Drive Tested
Output Drive Tested
Noise 1 (signal to noise)
Noise 2 (Aural)
Microphonics Test 1(Ambient)
Microphonic Test 2 (Shock)
Cathode Test
Grid Leakage Test
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