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FRONT PANEL
8
5
5
4
6
4
6
3
7
3
7
2
8
2
8
1
9
1
9
3
0
10
0
10
PRE GAIN
2
5
5
4
6
4
6
1
3
7
3
7
2
8
2
8
1
9
1
9
ENABLE
0
10
0
10
16
15
5
4
6
3
2
1
0
10
5
4
6
3
INPUT
2
1
0
10
(1) POWER SWITCH
Applies mains power to the unit. The red POWER STATUS LAMP (3) will illuminate when this switch is in the
ON position.
(2) STANDBY SWITCH
Engages the high voltage tube supply for immediate operation after warm up.
TIP: Always allow for at least 5 minutes of warm up time before engaging the Standby switch. This will improve
performance and reliability of the power tubes.
(3) POWER STATUS LAMP
Illuminates when mains power is being supplied to the amp.
(4) MASTER VOLUME
Sets the overall volume level of the amp. Once the desired balance between the three channels in the amplifier
has been achieved, the entire output level of the unit can be increased or decreased by rotating this control.
Note: this control is after the effects loops in the signal path
(5) RESONANCE & PRESENCE
Allows for adjustment of the damping factor of the power amplifier. Damping is the ability of an amplifier to
control speaker cone motion after the signal disappears. A higher damping factor reduces cone vibration more
quickly than a lower damping factor in the affected frequency range. The actual damping factor of the amplifier
decreases as the knobs are turned up. Resonance works on the low end and Presence exclusively affects the high
end response of the power amp.
4
7
CRUNCH
5
5
5
4
6
4
6
4
7
3
7
3
8
2
8
2
9
1
9
1
0
10
0
10
0
LOW
MID
HIGH
LEAD
14
7
8
5
5
4
6
4
6
9
3
7
3
7
2
8
2
8
1
9
1
9
7
0
10
0
10
8
PRE
LOW
9
ENABLE
ENABLE
6
5
5
5
4
6
4
6
3
7
3
7
2
8
2
8
6
1
9
1
9
7
0
10
0
10
POST GAIN
8
5
5
4
6
4
6
9
3
7
3
7
10
2
8
2
8
1
9
1
9
0
10
0
10
13
CLEAN
5
5
4
6
4
6
4
3
7
3
7
3
2
8
2
8
2
1
9
1
9
1
0
10
0
10
0
MID
HIGH
4
3
MASTER
5
4
6
3
7
2
8
1
9
0
10
STANDBY
VOLUME
12
11
10
CLN
GATE
5
5
6
CRCH
4
7
3
8
2
LEAD
9
1
10
0
SEL
POST
THRESHOLD
CHANNEL
2
1
ON
ON
POWER
9
5
4
6
3
7
3
2
8
2
6
1
9
1
7
0
10
8
5
4
6
9
3
7
3
10
2
8
2
1
9
1
ENABLE
ENABLE
0
10
5
4
6
7
9
0
10
PRE GAIN
5
4
6
7
9
0
10
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