Quick Rod & Pro Mod Rear Panel Controls
9. Speaker Outputs - 1/4" connection to the speaker cabinet
(NEVER!!! run a tube amp without a speaker/load)
10. Impedance Selector (Output) - 4/8/16 OHM selector switch to match the load of the speaker cabinet
11. Voltage Selector - (Optional) Switch to select either full voltage or the Drop B+ voltage option
12. Main Fuse - A 4 amp 250 volt fuse for use with 100/120 volt settings or a 2 amp 250 volt fuse for use with 220/240 volt settings
13. High Tension Fuse - A 1 amp 250 volt Slow Blow fuse
1. Footswitch A - TRS 1/4" Jack: Tip switches Solo Volume -- Ring switches OD1/OD2
2. Footswitch B - TRS 1/4" Jack: Tip switches Clean/Overdrive -- Ring switches Mode Switch
3. Loop Master - Master volume control for the effects loop
(When using the loop master do not run the channel volumes over 12 o'clock)
4. Series Effects Loop Level Switch - a +4db/-10db switch for matching line levels to effects unit/s
5. Series Effects Loop Bypass Switch - a true bypass switch for the effects loop and loop master control
6. Effects Loop Return Jack - Connection from the output of the effects unit/s
7. Effects Loop Send Jack - Connection to the input of the effects unit/s
8. Half Power Switch - Disconnects the outside power tubes
(Always set the amps impedance to half of the speaker cabinets impedance when in half power)
Tube Layout
○ ○ ○ ○ ○○○○
1 2 3 4 5 6 7 8
Pre-amp tubes
1. Pre-amp tube - 12AX7b 2nd gain stage of the clean channel
2. Pre-amp tube - 12AX7b Side A 1st gain stage for clean and OD channels -- Side B 2nd gain stage of OD channel
3. Pre-amp tube - 12AX7b Side A 3rd gain stage of OD channel -- Side B 4th gain stage of OD channel
4. Pre-amp tube - 12AX7b Phase inverter
Power Tubes
5. Power tube - EL34B (Quick Rod) -- KT88
6. Power tube - EL34B (Quick Rod) -- KT88
7. Power tube - EL34B (Quick Rod) -- KT88
8. Power tube - EL34B (Quick Rod) -- KT88
A B
FOOTSWITCH
LOOP MASTER EFFECTS LOOP
OUT/+4db
IN/-10db
OUT/BYPASS
IN/ACTIVE
HALF POWER
FULL POWER
RETURN SEND OUTPUT VOLTAGE
MAINS INPUT
MAINS FUSE
4A 120V
HT FUSE
1A Slow BLOW
2A 220/240V
• • • • • • • • • • • •
8164
SPEAKERS
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