wired in parallel to mix the Effects Loop with the internal reverb signal. Lastly
we have V4A which is the driver stage for the 2 output valves.
The output stage consists of a 9-Pin pentode, (we fit an EL84) and an 8-Pin
Pentode, (we fit a 6L6).
The V10 has been designed so that all of the valves can be swapped for
different types. For example, to alter the gain of the preamp section, Valves
V1-V3 can be swapped for lower gain ECC81s, (12AT7s) or 5751s which have
gains of 60 & 70 respectively. An ECC83 has an average gain of 100. You could
also choose to fit 12AX7s which have been selected for super high-gain.
There are a few equivalents to the EL84 9-pin Noval output valve that can be
swapped and these are designated N709, 6BQ5, 7189, 7189A, EL84L, (7320)
and its direct Russian equivalent the 6P14P. These are all fairly similar in
operation but will vary from different manufacturers and age.
The 6L6GC 8-Pin Octal can be swapped for a variety of valves which may give
very different responses. These include but are not limited to the following:
EL34, 6V6, KT66, KT77, KT88, 6550, 6CA7 & 5881.
The first batch of V10s were fitted with a butterfly clip for the octal valve but
some of these replacements, (the KTs & 6550) have a larger base on them
which won’t fit passed the clip, (designed for EL34/6L6 valves), so this clip will
need to be removed. Later versions of the V10 have a large spring-retainer
fitted which is suitable for all types of Octal valve. If you wish to fit one of
these, please contact Victory on
address and we’ll post one out to you.
Take care when swapping valves as they may still be very hot from use. Use a
cloth to remove them if possible. Take care when removing any valve as the
pins can easily be bent and the plastic locating key on the OCTAL valve can be
snapped off. We recommend a slow circular motion known a ‘dweezling’
while lifting the valves from their bases as this will free them with the least
amount of effort and stress. Ensure that as you remove them, they are never
more than a few degrees from vertical to avoid bending or breaking pins etc.
From time to time, the Octal ceramic valve base should be re-tensioned to
ensure a good contact with the pins on the valve. To do this, firstly make sure
