Owner`s manual

Figure 3. Bias switches and potentiometers

8) Flip the switch towards the rear of the amp thus disengaging the tube from the

meter circuit.

9) Repeat the above steps for each of the tubes in both channels.

As it is a quick operation, the tube bias should be checked on a regular basis.

TROUBLESHOOTING

Speaker Hum – If hum can be heard from more than a few inches from the

loudspeaker, there is probably a ground loop. Try using the “low Z” RCA jacks.

If there is still hum, flip the grounded/ungrounded switch on the rear panel to

ungrounded. If this fails to cure the hum, call customer service at Rogue Audio

for further advice.

Tube will not bias – If the meter provides a reading but the tube will not bias, the

tube is probably bad. If no meter reading can be attained, check the fuse (1/4

Amp slow blow). If the fuse is bad, replace the fuse and then set the bias. If the

bias will not maintain itself and the fuse blows again, the tube should be

replaced.

Potentiometers

Switches

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