Names and Function on Each Part
Front Panel
1. INPUT Jack: 1/4" phone jack input.
TUBESCREAMER Section
2. DRIVE: Controls the distortion depth. Turning the knob clockwise
increases both distortion and sustain.
3. Tone: Controls the overall tone.
4. Level: Controls the output level of the TUBESCREAMER section.
5. TUBESCREAMER Switch: This switches the TUBESCREAMER
section between ON and OFF. When this is turned OFF, the guitar
signal bypasses TUBESCREAMER section.
Tube Section
6. Boost Switch: This turns on/off an additional boost circuit separate
from the TUBESCREAMER section. When this is turned ON, the
guitar signal is boosted by 6dB at over the whole frequency range
just before the tube section.
7. Bass: Controls low frequency range.
8. Treble: Controls high frequency range.
9. Volume: Controls the output level from this amplifier. The amp can
be overdriven by turning the volume up.
10. Standby Switch: This switch engages the high voltage DC to the
tubes. Always power the amplifier on using the POWER Switch
with this switch in the STANDBY (down) position. Wait for at least
30 seconds after turning POWER on and then engage the STAND-
BY Switch into the ON (upright) position. Powering up in this fash-
ion will help to preserve tube life. It is also best to put the amp into
the STANDBY position when taking breaks.
11. Power Switch: This switch turns the AC power on/off the amplifier.
Use it in conjunction with STANDBY switch to properly power the
amplifier on. When this is turned ON, the red LED on the right will
be illuminated.
Rear Panel
12. AC INPUT: Connect the included AC power cable to this connec-
tor. Only use this amp with the voltage indicated on the panel.
13. WATTAGE SELECT Switch: Switches between pentode and triode
connection at power amplifier stage. In pentode the amp will oper-
ate at 15 watts. In triode the amp will operate at 5 watts.
14. SPEAKER OUTPUT Jacks: Connect to speaker cabinet with
speaker cable. Refer to "Connection to Your Speaker Cabinets".
15. FOOTSWITCH Jack: Connect to the footswitch IFS2G (sold sepa-
rately). You can control the TUBESCREAMER and BOOST switch
via footswitch. When the footswitch is connected, both on/off
switches on the front panel are disabled.
16. SEND Jack: This is an output for the TUBESCREAMER and
BOOST circuit. This should be used if you would like to add addi-
tional effects after the TUBESCREAMER. Connect send to the in-
put of your outboard effects devices.
17. RETURN Jack: This is an input to the amplifier back from your
outboard effect devices. Connect the output of your effects device
to this input. This jack connects to the input of tube circuit. You can
also use this amplifier as a pure tube amplifier if you connect your
guitar to this input directly. (This will completely bypass the TUBE-
SCREAMER circuit all together.)
NOTE: Using the boost function with other devices connected af-
terwards in the chain may cause distortion to the input of the device
especially when used with high gain pickups.
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