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Risk of fatal electrical shock from opening chassis; no user serviceable parts inside.
Do not operate in damp conditions; tube and chassis surfaces get very hot.
High volume use can cause permanent hearing damage; always use ear protection.
Install power tubes, ensuring alignment pins match socket holes. Push tubes firmly.
Plug in amp, turn VOL down, ensure speaker is connected, then turn amp on.
Powers the amplifier. Always ensure a speaker is connected before turning on.
Offers different tonal voicings: US (clean American), LO-FI (bluesy grind), UK (British crunch).
Controls the amount of overdrive and distortion. Affects volume level.
Controls the overall output volume of the amplifier.
Controls treble frequencies. More responsive at lower MID settings.
Controls midrange frequencies. Higher settings produce a harder sound.
Controls bass frequencies. Reduce at higher volumes or with humbuckers for clarity.
Controls frequencies above TREB, adding "chime" and "sparkle".
Controls the amount of reverb. Higher settings may introduce hum.
Selectable output wattage. 5W for overdrive at lower volume, 15W for max clean sound.
Passive loop for rackmount effects units. Connect SEND to effects input, output to RETURN.
Connect SEND of first amp to RETURN of second amp for dual amp operation.
Unplug amp before replacing fuse. Use specified FAST BLO fuse type only.
The four small tubes. Use 12AX7 type. Replace when noisy or malfunctioning.
Tube farthest right. 12AX7 stock, 12AT7 for more clean headroom.
The two large tubes. Use 6V6 type only. Replace if sound is soft or noisy.
Requires qualified technician for bias adjustment when installing new power tubes.
Some hum is normal above 50% VOL/REV. Excessive hum may be from external electronic devices.
Reverb tank should not be mounted tight to prevent vibration feedback.