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P a g e
Power
Tip!
Power amps need lots of clean power.
For best results, it is recommended to plug the Bia 200 directly into an AC wall outlet with a
proper ground and not through any power conditioner, extension cord or power outlet strip.
Carefully plug in the AC power cable to the power amp first then into the wall outlet.
Warning!
It is
not recommended
to use any AC 2 to 3 pin adapter (cheater plug)
with this power amp. For your safety Zesto Audio provides 2 ground switches that float the
ground when using XLR cables. If you get a hum, start with the ground switch off, then
independently flip the switches for the least amount of noise.
Tip!
What Is Your Best Audio Accessory?
Hire an electrician to install a 20 Amp
dedicated line for your audio system. Do not plug in any lighting on your audio circuit as
lighting can be a notorious source of hum.
Tubes
Installing the tubes
This unit is compatible with KT88, KT120, KT150 and KT170 output tubes and
only 12AU7/ECC82 input tubes.
Output tubes can go in any socket V1 thru V4. Input tubes V5 thru V8.
When installing the 12AU7/ECC82 tubes, be careful not to bend the pins or damage
the 9 pin sockets. You should not have to use excessive force. Inserting tubes
incorrectly is
not covered under the warranty.
Warning!
The circuit design is
not
compatible
with 12AX7, 12DW7 or any other 9
pin tube. This will cause damage to the unit.
