Master
The Master Volume control is used to set the stage or overall volume of the V40. If this is turned to
maximum, then the V40 becomes a non-master volume amplifier where the Input Volume control in
conjunction with the Volume control on the guitar allows for a wide range of Volumes & Gains to be
achieved. This can be very powerful for tone shaping.
The Master Volume control is positioned after the phase splitter valve and so turning up the Input
Volume control allows for overdriving the first part of the power output stage.
HIGH – STANDBY – LOW Switch
The V40 should always be switched on, (mains switch on rear of amplifier), with this front panel toggle
switch in its centre position. The amplifier is now in ‘STANDBY’ mode with just the valve heaters and low
voltages on. This allows the valves to heat up before they get 100s of volts up them, (it’s less of a shock).
After around 60 seconds, the amp can be switch to either HIGH, (around 42watts rms) or LOW, (around 9
Watts rms)
REAR PANEL
Voltage selector
This selects the correct mains voltage for your territory. Please refer to a qualified technician before
even thinking about moving this switch. If you do find yourself in foreign climes where the mains voltage
is different to home, (and the water tastes funny), it will be necessary to switch this selector. The mains
fuse must always be changed at the same time. Failure to do this will result in either the mains fuse
blowing as soon as the amp is turned on or the amp running with a fuse that is of too higher value to
provide adequate safety protection. Generally, the fuse value will double if the mains voltage is halved,
(i.e. if it’s a 1A fuse in the UK @ 230V, it will needs to be a 2A fuse for the USA @ 115V).
