Rear Panel Functions - Two-Rock Sensor 22 Owner's Manual

A/C Input - Connects the amplifier to A/C power via the power cord supplied. Unless otherwise
specified, your amplifier is designed to operate on 120 volts A/C, 60 cycles.
Fuse - See Fuse Chart
Power Switch - Turns power on.
Speaker Output Jacks - There are 4 speaker output jacks; Dual 4, 8, and 16 ohms.
NEVER OPERATE YOUR AMPLIFIER WITHOUT A PROPER SPEAKER LOAD CONNECTED.
Be sure to match the impedance of your cabinet with the impedance (output) of the amplifier.
Effects Loop – This is a fully buffered tube circuit which incorporates Send and Return
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level controls. Both controls are active even if no effects are introduced into the
system. The loop also has the ability to be run in series or parallel. The circuit incorporates
two 12AX7VKA tubes. These tubes are run as a cathode follower pair that creates a unity
gain high/low impedance system. Perfect analog circuit for running signal in and out of
analog or digital gear with minimal insertion loss.
Send - Sends signal to effect's input. (1/4" Mono Jack)
Send Level + Pull Bright - Adjust the amount of signal that passes from the preamp stage to the
Effects loop Send jack. Adjust this control to keep clipping down within effect signal chain.
A unity setting with nothing inserted into loop is 3 o'clock.
Pulling the knob to the "out" position: Brightens the signal of the effects send, if needed, when
the high frequencies are compromised within some digital effects or long cable runs.
Return – Returns signal from effect's output. (1/4" Mono Jack)
Return Level + Pull Bright - Adjust the amount of signal that is returned from the effect's output.
Adjust this control to minimize unwanted signal clipping in the power stage of the amplifier.
A unity setting with nothing inserted into loop is 12 o'clock.
Pulling the knob to the "out" position: Brightens the signal of the effects send, if needed, when
the high frequencies are compromised within some digital effects or long cable runs.

Rear Panel Functions