User guide

1. 15VDC Supply center positive. Only use the Radial power supply that
came with your Tonebone.
2. TUNER output keeps tuner out of audio signal path.
3. OUT-2 is transformer isolated for your 2nd amp.
4. OUT-1 is your primary connection for proper grounding this needs to
be connected at all times.
5. GAIN is used to adjust the power booster gain level.
6. DRAG™ load connection let’s you dial in the proper load for your pick-
ups.
7. SWITCH SELECT allows you to assign the Boost Foot Switch to
mute, mid boost only, or gain and mid boost.
8. MID BOOST selector lets you add desired amount of mid range on
the power boost circuit.
9. BOOST on or off LED monitors the Boost status.
10. BOOST on or off foot switch.
11. INPUT from your guitar.
12. TOGGLE SWITCH AND LED INDICATORS Foot switch toggles
input signal between out-1 and out-2. LED indicators show output
status.
13. BOTH Foot Switch turns BOTH 1 & 2 amps on or off.
14. GROUND lift disconnects the ground at output 2(B), to reduce noise.
15. POLARITY reverse toggles output 2(B)’s polarity to bring your amps
or pedals into phase.
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Radial Engineering Switchbone Owner’s Manual
True to the Music True to the Music