Randall Amplifiers 667 User Manual

OPERATION MANUAL

Congratulations on the purchase of your new RANDALL MODEL 667 Amplifier! We at Randall Amplification appreciate that you chose
the 667 Amplifier and wish you years with tons of gain, great tone and enjoyable playing time. Engineered by world renowned amp
guru, Mike Fortin, this amplifier is the result of countless hours of listening tweaking and perfecting the tight and relentless attack that
this collection of channel circuits deliver. The design is intended to offer the most flexible tube amplifier ever created. With 6 channels,
6 modes per channel and 7 midi assignable functions, the 6-6-7 takes high gain to the highest levels!!!

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Please review the safety instructions below and be aware that the documentation provided in this manual references 120volt USA
versions of the models covered.

Note that the POWER listed on the back of the unit should be for your countries’ power standard.

Front and Rear Controls

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CHx: Selects your channel and GAINx , BRIGHT switch, and VOLx.!

GAINx: Overall gain control.!

BRIGHT: 3 way high frequency boost that becomes less active as GAINx control is increased.!

VOLx: Channel volume control to balance output between other channels. It affects the SEND levels of the FX LOOP.

TSS: 3 way switch that shifts the frequency point of the tone stack to better match the amplifier to different speaker types and room sizes.

BASS: Passive interactive low frequency equalization for CHx.!

MIDDLE: Passive interactive midrange frequency equalization for CHx.!

TREBLE: Passive interactive high frequency equalization for CHx.

DEPTH: Power amp control of low frequency interaction between amplifier and speakers. Dedicated to row of controls for CHx selected.

PRESENCE: Power amp control of high frequency variable feedback. Dedicated to row of controls for CHx selected.

TIPS: For the Clean Channels 1 and 2, obviously keeping the gains lower and bringing up the channel volumes will yield the clean tones and vice versa

for dirty tones. For channels 3 to 6, make sure to have the channel volumes 2-3 o'clock or more to have the correct amount of body on the tone. Then

just make the channel volume adjustments to balance the loudness between the channels. All the channel volumes are pre FX loop so after you balance

all the loudness levels between all the channels, you only have to set your loop up once. After that when going to gigs or rehearsals, only the overall

master volumes have to be adjusted as everything else stays as is.

Six Channels of Pre-amp - overview:!