Owner manual

Model TD-100 Tube Direct Box

Front Panel

Ground Lift Switch

This two-position switch removes the third prong of the

power cable from the circuit. Lifting the ground can some-

times reduce the hum caused by a ground loop in your audio

system.

Polarity Switch

This switch changes the polarity of the outgoing signal.

Direct Instrument Output

This jack mirrors the instrument input. Plug your instrument

into the input and run a line from this ouput to the input on

your ampliﬁer. This output is not affected by the Loading

control.

Instrument Input

Input for your bass, guitar, keyboard or other instrument.

The maximum input level is +24dB.

SIGNAL

DRIVE

10K 2M

INPUT

DIRECT OUT

OUTPUT GAIN

SIGNAL

GRO

UND

LIFT

POLARITY

ON OFF

INSTRUM

ENT PRE-AM

TD-100

TUBE DIRECT