10
Detailed Step-By-Step Instructions
1. Plug in the cable of the provided 16 VAC power supply to the distortion box
then plug the “wall wart” end into a 120V wall outlet or power strip. You should
see the green LED on the Rhythm channel light up. All other status indicators
will be dark. When first powered up, the Twin Tube Blue will always default to
bypassed mode with the Rhythm channel staged in waiting mode.
2. Turn both master volumes fully down (counter-clockwise). Set the Bass and
Treble controls at 12 o’clock.
3. Connect a good quality, shielded ¼” cable from the output jack to the input of
your amplifier.
4. Connect another good quality, shielded ¼” cable, first to the output jack on
you guitar, and then to the input jack of the Twin Tube Blue. Note that the tubes
in the Twin Tube Blue may require two to three minutes to warm up and begin to
produce sound.
5. Press the “On/Bypass” button to activate the Rhythm Channel. Turn the Gain
control up about half way. Slowly turn the Master Volume up as you pluck a string.
Fine-tune the Gain setting to achieve the level of overdrive and saturation you
want. Set the Master to achieve the playing volume you want.
6. Press the “Channel Selector” button to switch to the Lead Channel. Repeat the
previous process of setting up the Gain and Master Volumes.
7. Adjust the Bass and Treble controls as desired. Note that they influence both
channels. We have “pre-voiced” the two channels to provide what we feel is a
balanced tone when switching from Lead Channel to Rhythm Channel and to
facilitate using one common set of tone controls.
8. Balance your wet to dry levels by working with the Volume control(s) on your
amp and the Master Volumes on the distortion box.
9. Never open the chassis. There are no user serviceable parts inside and
tampering with the high voltage tube circuits could result in serious injury or death
– not to mention damage to the unit.