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VALVE RECTIFIER/SILICON RECTIFIER Channel Controls
The RevivalDRIVE features two channels, selectable via footswitch. While the controls are
identical, the two channels offer a choice of rectifier styles.
Please note: the VALVE RECTIFIER channel can be switched to a second SILICON
RECTIFIER channel using the rear-panel MODE DIP switch (see below).
VOLUME:
In true vintage amp style, we've gone with the term “VOLUME”, but we could
equally have called this control “gain”. Turn clockwise for more overdrive, counter-
clockwise to clean things up.
LOWS:
Having set the desired treble response using the PREAMP switch, the LOWS
control allows you to adjust the amount of bass pushing the drive circuitry. This will take
the user from a Vox-like, tight and clean low end all the way to '50s Tweed territory –
thick, raspy and severely distorted!
MORE|PRES:
This control combines two parameters, both related to the effects of
negative feedback in the power amp stage.
•PRES (turn clockwise):
The classic “Presence” knob, the PRES control releases the
higher frequencies from the effects of negative feedback as you turn it clockwise from
the centre position. This has the effect of progressively boosting higher frequencies in
vintage Marshall and Brownface Fender fashion.
•
MORE (turn counter-clockwise):
The MORE control progressively reduces negative
feedback in the pedal's push-pull output stage, increasing gain but also varying playing
feel by modifying the clean-to-overdriven transition characteristics.
With the control centred at 12 o’clock, there is a definite threshold to this transition,
with an abrupt switch from clean to overdriven once you pick hard enough. Turning the
control fully counterclockwise completely removes negative feedback, delivering
maximum gain, early onset of distortion and a smooth, gradual transition from clean to
fully overdriven. It will also slightly increase the amount of background hiss, which
would otherwise be counteracted by negative feedback.
In general terms, the response at 12 o’clock is akin to a Marshall with the “Presence”
knob at zero. Turn the knob fully counter-clockwise and the pedal behaves like a Vox
AC30, with no negative feedback whatsoever. In between, you'll find Fender Blackface
territory.
Please refer to the Example Settings to see how to set this control to match the performance
of your favourite style of amp.
