Zesto Audio 2015 8 |
P a g e
Other Features
Each unit is made by hand
50 hour factory burn in on all circuits and vacuum tubes
Dimensions 17" W X 20" D X 10" H
Weight 66 lbs. (30Kg)
16 and 14 gauge Zinc plated steel enclosure
Chrome plated spike feet
Two year limited warranty
Six months warranty on Vacuum Tubes
Proper Care of your Bia 120 Power Amp
Very Important Read First
The simple rule to remember is to
“turn on your preamp first before turning on your power amp and turn off
the power amp before turning off the preamp.”
Not doing so may create a very loud noise that could damage your speakers or other equipment.
It is customary for vacuum tube equipment, when it is first turned on, while the unit is powering up, to have a brief
initial “hum” coming from the unit, not from the speakers.
It is very important that all of your audio equipment is
turned off
or unplugged from the main power before
attempting to install this unit.
The unit is ready to listen to within a few minutes after powering up, however for best performance allow at least
30 minutes of warm up.
It is
not recommended
to drive the Bia 120 directly from a DAC or to use a passive volume control. The Bia is designed
to be driven by a powered preamp.
Burn-in
Like all high end audio equipment, this Vacuum Tube Amplifier can take
100 or more hours to
break in
. For circuit
testing and quality assurance, Zesto Audio ships all the Bia 120 Amps with at least
50 hours of factory burn-in.
Installing Tubes
This Bia 120 ships with a matched quad of KT88’s so they can go in any socket V1 thru V4. KT88’s have a key
and can only go in one way.
Tip: The logo and the key on the tube faces forward.
Caution! Do not ROCK the tube, install straight up and down holding the metal collar.
If you look at the
bottom of the tube there is a black plastic cylinder in the center of the pins with a key. This plastic is fragile and
can easily break if you rock the tube.
Broken keys are not covered under warranty.
Warning! You can blow up a power amp with considerable drama by inserting a KT88 power tube
incorrectly.
This happens when you break the plastic key and do not insert the pins with the proper orientation
into the socket.
