Groove Tubes / ECC83/ECC83S-GROOVE TUBES SUPER PREMIUM

ECC83/ECC83S-GROOVE TUBES SUPER PREMIUM ECC83/ECC83S-GROOVE TUBES SUPER PREMIUM Click on image(s) above to view larger
£25.00

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A test report is available click here to view

Groove tubes were founded back in 1979 by Aspen Pittman and have become one of the most respected valve brands in the world.

We Offer The best tested Groove Tube valves in the world

We take selected GT items and in addition to GTs in house testing and distortion rating on output valves they also undergo our own unique real world burst testing. The burst testing process involves a series of varying timed electrical signal bursts. This runs the valves under the same stress conditions that they will meet in your amplifier. All output valves are then dual matched by us on current and gain. This will ensure that you get the best selected GT valves available anywhere in the world.

We believe this combination gives you the best tested valves available anywhere in the world.
Groove Tubes Super Premium valves take the selected GT items and in addition to GTs in house testing are specially drive tested by us and checked for noise and microphoney. This will ensure that you get the best selected GT valves available anywhere in the world.

ECC83/ECC83S Groove Tube is the most popular GT ECC83 replacement valve for the 12AX7 as it produces a warm even tone with a full rounded bass response. The valve has a medium gain, when compared to many other modern 12AX7 types. This makes it particularly useful to calm down gain channels of high gain amplifiers to keep overdrive and saturation under control. This nice rounded tone makes this a good choice for a wide range of amplifiers and musical styles.

In addition to GTs in house testing these Premium GT are specially Dynamically Drive tested under real working condition by us and checked for noise and microphoney.

All GT Premium valves 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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