Revv Owner’s Manual5.0
5.1
5.2
Power Tube Sockets & Tube Type
The Generator has been designed to
allow mixing of power tubes as each
pair has its own bias adjustment. Tube
positions 1 and 3 are set up as one pair
and are biased with the bias adjustment
trimmer next to tube 1, and tubes 2 and
4 are the second set that are biased with
the adjustment trimmer next to tube
2. This allows the user to mix different
power tubes in the amp to get a desired
sound. So a set of KT88 tubes can be
used with a set of EL34 tubes and the
benefits of using both tubes can be
mixed together, or maybe you prefer a
set of EL34 tubes with a set of 6L6GC.
Tube Pair 1: V1 and V3 – set bias with
trimmer next to V1.
Tube Pair 2: V2 and V4 – set bias with
trimmer next to V2.
Note: While we have equipped the ampli-
fier to have this great feature, we advise
that all tubes be set up by a qualified
service technician to prevent damage to
the amp from improper bias settings.
tubes & bias
Power Tubes
We have found these tubes to best fit
the tone of this amplifier and for optimal
performance we recommend them.
Here are a few characteristics of the
tubes we find with the amplifier.
KT88 – This tube is punchy with a strong
low end and a great clarity. The extra
power out of this tube adds extra head-
room and is very tight and focused.
6L6GC – The 6L6GC tube is big, open
and articulate. These tubes come stock
in the Generator as they provide the low
end and clarity that we find to work best
with this amplifier.
EL34 – The EL34 tubes are more ag-
gressive than the KT88, they add more
harmonic content and have a bit more
sizzle on the highs. The low end still re-
mains tight, this tube also compliments
the Generator tone.
Note: The tubes listed above are guaranteed
to bias correctly in the amplifier, but other
tubes can be used in the amplifier as well.
6550, KT77, KT66, 5881 are some examples
of other tube types that can be used.
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