Two-Rock CLASSIC REVERB SIGNATURE, Owner'S Manual, Page: 6 / 10

Rear Panel Functions
A/C Input - Connects the amplifier to A/C power via the power cable supplied. Unless otherwise
specified, your amplifier is designed to operate on 120 volts A/C, 60 cycles, ONLY.
Fuse - See Fuse Chart
Power Switch -Turns power on.
HIGH/LOW Switch - On 100/50w and 40/20w models the HIGH position is full power, and the
LOW position is half power. The 100/50w and 40/20w proprietary output transformers, when
switching from full power to half power, will automatically compensate for impedance differences
so no impedance adjustment is necessary. On the 50w model the High position is fixed bias, and
the LOW position is cathode bias. The cathode bias setting lowers the amp’s headroom and power
output while enhancing touch sensitivity.
Speaker Output Jacks
-There are 3 speaker output jacks; 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.
Footswitch Jack -The footswitch connects here. The FET function, tone stack bypass, and reverb
defeat functions can be activated via the footswitch. The respective front panel switches (FET and
bypass) must be in the “off,” or down position, to enable the footswitch functions.
Effects Loop –
The effects loop on this amplifier is a passive type of loop, see FAQ on two-rock.com
Effects Send
- Use this jack to send the amplifier’s signal to outboard effects.
Effects Return - Use this jack to connect the output of your effects to the amplifier.
S/N
- Your serial number is located here. We strongly suggest that you record this number and
have it handy in case you need service, or in the event that your amp is lost, stolen, or damaged.