Using the 2ba-221 as an instrument preamp, Instrument preamp, Hi-z input – Summit Audio 2BA-221 Mic and Line Preamplifier User Manual

Page 13: Model 2ba-221 microphone preamplifier, Applications

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Model 2BA-221 Microphone Preamplifier

13

Applications

Using the 2BA-221 as an Instrument Preamp

The 2BA-221 makes a great instrument preamp for guitars,
basses, keyboards or whatever. In addition to the +4 Main
Balanced Output, the Stacking Output and the -10 Main
Output can be used to send the signal to the board, your
amp or a headphone monitor amp.

Turn up the Tube Output control for more tube sound, use
the Solid State input gain for a cleaner sound. To distort the
2BA-221, turn the Tube Output up to 2-3 o’clock and adjust
the solid state Hi-Z input gain to get a good level. Adjust the
solid state and tube output controls to get the desired
amount of distortion. Use the –10dB balanced output if the
XLR output has too much gain.

HI-Z

Input

MIC & LINE MODULE

10

0

-20

-

+

ON

OFF

20 Hz

200 Hz

10

10

10K

100

ON

OFF

+48V

HI Z

SOLID STATE

INPUT GAIN

TUBE

OUTPUT

SOLID STATE

LINE / HI Z

PAD

POLARITY

FILTER

HIGH PASS

MIC

MIC PRE.

-

-

-

2BA-221

To

Recording Device

or Line Mixer

To

Headphone

Amp

To
Bass Amp

Instrument Preamp

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