|10. Channel Select
A four-position Channel Select rotary control
is provided to access the three channels when
the footswitch is not connected or available.
|11. Loop Assign
A five-position Loop Assign switch is provided
to assign the effects loop to any or all
of the channels or select FTSW to trigger the
loop on and off with the Mark V footswitch.
|12. External Switching Jacks
Four 1/4" external switching phono jacks
are provided for remote control of the Mark
V channels, EQ and Solo control from a
|13. Effects Loop
The effects loop is fitted with a hard bypass
feature that removes a whole tube (two stages)
and all associated circuitry from the signal
path for the purist who insists on the most
direct path to tone in the studio.
|14. Reverb Controls
Individual reverb controls for each channel
allow you to set the desired mix of the rich
all-tube reverb effect for each channel without
|15. Pentode/Triode Switch
A pentode/triode mini toggle switch allows
you to choose the wiring configuration on
the middle pair of power tubes in Channel
3 only. Pentode produces a bolder, tighter
voice that has a more pronounced midrange
curve and is excellent for adding percussive
authority to lower gain single note
solo sounds. Triode softens the attack and
scoops the mids a bit more to create a more
liquid, legato feel that really shines for high
gain styles and faster playing.
|16. Switchable Rectifiers
Channels 1 and 2 are fitted with individual
mini toggles that allow you to choose
between the tight, bold higher-headroom
response of silicon diodes or the saggier,
sweeter low-output looseness of tubes in the
45-watt power setting only. The 90-watt setting
automatically selects the silicon diodes
and the 10-watt setting requires the tube
rectifier to operate safely.
|17. Speaker Outputs
Two 8- and 4-ohm speaker outputs
are provided and with these jacks
almost any speaker cabinet combination
can be accommodated.
|18. Tuner Output
A 1/4" tuner output is provided and a silent
tuning feature has been incorporated so you
can tune the instrument onstage without
bothering the band or audience.
|19. Slave Output/Slave Level Control
A slave output and slave level control allows
you to capture the full sound of the Mark V,
both preamp and power section, for a feed
to processing racks and/or additional power
amps for big venue applications.
|20. Footswitch Jack
The footswitch jack is conveniently located on
the right side of the rear panel and accepts a
8-pin male DIN cable.
|21. Cooling Fan
The cooling fan is fitted with an on/off switch
to allow silent running in the studio or late
night practicing in the lower wattage settings.
|22. Bias Select
A bias select switch is included that allows
you to run EL34s in place of the stock compliment
of 6L6s. The EL34 style tubes will
produce a brighter, skinnier sound that will
clip with an enhanced harmonic content.
The 6L6s will likely perform better for a wide
range of sounds.