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Engl Powerball E645 & Powerball 2 E645-2 High Gain Opion
Price: $215.50
Engl Powerball E645 & Powerball 2 E645-2 High Gain Opion
Product Details
Want all the gain you can get? This is our High Gain Option Retube Kit for the Engl Powerball E645 & Powerball 2 E645-2 Amps. The preamp section uses four handpicked High Gain ECC83S's with one balanced for the phase inverter in V8. For the power section we use a matched quad of the JJ 6L6GC's in a warmer grade to improve the range of the adjustable bias supply.
The Balanced High Gain ECC83S is located in V8 farthest from the input jack.

These are adjustable bias amps and all you need to check and adjust the bias is a bias probe and a Multimeter, or our all-in-one Eurotubes "Pro One" bias probe that reads both the plate current and the plate voltage simultaneously. These are available under the "Related Products" tab.


You can use our Generic bias video for reference which we did on a Marshall 800 and the procedure is the same.

The video below explains the difference between bias probe types.

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