How to adjust Bias-Voltage_____________
After you exchange the power tubes ( like EL34, 6CA7 ),
you have to adjust the bias-voltage again.
The recommended Bias-Voltage is 0.40V ~ 0.43V !
Never over 0.5V, will cause the power tube burned
down.
The life time of vacuum tube depend on the quality and used
hours each day. Usually, one set of tubes can be used for 3 ~ 5
years. After you used Jasmine EL34-PP for several years and
find the sound quality degraded markedly. It’s time for
exchanging the tubes.
Some times, Audiophile like to change the different brand of
tube to obtain different sound.
6F2 = 6U8A
EL34 = 6CA7
The tubes are must pairs matched at least. The best is
four tubes matched each other.
1. Power off your Jasmine EL34-PP Tube Integrated Amplifier
2. Waiting for the tubes cooling down to the safety
temperature, pull off the tubes
3. Plug in the new tubes, V1 and V2 is one pair, V3 and V4 is
another pair
4. If you only exchanged one pair of 6F2 tubes, the
exchanging operation is finished. No necessary to execute
following steps !
Why need to upgrade or exchange the tubes ?
The Exchangeable Tube Type
Step One: Exchanging the Tubes
