4
FRONT PANEL
(1)  POWER SWITCH
Applies mains power to the unit.  e 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 aer warm up.
TIP:  Always allow for at least 5 minutes of warm up time before engaging the Standby switch.  is 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 amplier 
has been achieved, the entire output level of the unit can be increased or decreased by rotating this control. 
Note:  this control is aer the eects loops in the signal path
(5)  RESONANCE & PRESENCE
Allows for adjustment of the damping factor of the power amplier.  Damping is the ability of an amplier to 
control speaker cone motion aer the signal disappears.  A higher damping factor reduces cone vibration more 
quickly than a lower damping factor in the aected frequency range.  e actual damping factor of the amplier 
decreases as the knobs are turned up. Resonance works on the low end and Presence exclusively aects the high 
end response of the power amp.
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CRUNCH
LEAD
POWERSTANDBY
ONON
MASTER
INPUT
PRE LOW MID
SEL
CHANNEL
CLN
CRCH
LEAD
HIGH
LOW MID VOLUMEHIGH
ENABLE ENABLE
ENABLE
POST
THRESHOLD
BOOST
DRIVE TONE
ENABLE
LEVEL TONE
BOOST
PRE GAIN POST GAIN
PRESENCE
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
CRUNCH
LEAD
POWERSTANDBY
ONON
CLEAN GATE
INPUT
PRE LOW MID
SEL
CHANNEL
CLN
CRCH
LEAD
HIGH
ENABLE ENABLE
ENABLE
POST
THRESHOLD
BOOST
DRIVE TONE
ENABLE
LEVEL TONE
BOOST
PRE GAIN POST GAIN
RESONANCE PRESENCE
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6
0 10
1 9
2 8
3 7
4
5
6