Radial Engineering Ltd. Headbone User Guide
True to the Music
FEATURE SET
1. Input Buffered – This is the primary input for your guitar and pedal
effects that do not buffer (pre-amplify) the signal.
2. Input Direct – Used when driving the Headbone from a device, like
the Radial Loopbone, that buffers (pre-amplies) the signal.
3. To Amp-1 Input – This is a ¼” hi-impedance guitar signal output that
connects from the Headbone to the input of the rst guitar amplier.
4. To Amp-2 Input – This is a ¼” hi-impedance guitar signal output
that connects from the Headbone to the input of the second guitar
amplier.
5. Ground Lift – This recessed switch connects the ground to Amp-2. This
switch is factory set in a ‘lifted’ position to eliminate ground loops.
6. Slingshot Remote Input – This ¼” input is used to remotely control the
Headbone from your pedalboard using a standard contact closure foot-
switch or another Tonebone device that features a Slingshot output.
7. From Amp-1 Output – Connects from the rst amplier’s speaker
output jack back to the Headbone. This is a speaker level signal, so
use a good quality speaker cable for best power transfer.
8. From Amp-2 Output – Connects from the second amplier’s speaker
output jack back to the Headbone.
9. To Speaker Cabinet – Connects the Headbone to your speaker
cabinet.
10. Power Supply Connection – The Headbone comes with its own
15VDC power supply in a choice of 100V, 110V, 220V and 240V
models.
11. Footswitch – Used to toggle the Headbone between Amp-1 and
Amp-2
12. LED Indicators – Indicates which amplier head is active.
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