User Manual

Ready to wiggle tube out of the socket.

12AX7 tube replacement.

Radial Engineering

Classic Trimode

Ready to change the tube? Ok, lets

start here.

Knobs off, nuts & washers off, side jack nuts

& washers off, now remove screws.

True to the Music

Spread chassis sides to clear input &

output jacks.

Press on knobs with shafts counter-

clockwise and pointers at 7 o’clock.

TROUBLE SHOOTING

I am not getting any sound at all… Start by connecting your

guitar directly to your ampliﬁer & check each cable to make sure

they work. Make sure that these are plugged in correctly.

I am getting sound but no distortion… Make sure pedal is not

connected backwards by reversing the input and output. If ok,

check tube. If the problem persists, see your Tonebone dealer.

The LEDs do not light up… Check the power adaptor to make

sure it is plugged in. If the LEDs do not light up, check the outlet

with another device to make sure power is present. If they still do

not light up, check the power supply with a voltmeter.

The sound has changed, it sounds thin… The tube may need

changing. Bring it to your dealer to have him test to make sure.

I am getting radio signals though my ampliﬁer… Cables and

bad grounding are usually the cause. Check ampliﬁer is properly

grounded with a 3-prong A/C cord and wall receptacle is wired

correctly. Use high quality guitar cables with proper shielding.

PHOTOS OF TONEBONE CLASSIC