PRE/EQ 81 by Labo ★ K Effects

PREAMP USER CONTROLS

LINE : Selects the Microphone or Line input

48 : Enables 48V power supply for condenser microphones (LED display)

PH: Reverse the phase of the signal

TRIM:  Reduces or increases the gain by +/- 10dB

MIC GAIN: selects the gain of the microphone preamplifier (20dB to 80dB)

FILTRES : Low-cut and high-cut filters with potentiometer scanning.

LEVEL:  Output volume (Fader)

INSTRUMENT:  High impedance input for instrument. Inserting a Jack plug switches the instrument input to the microphone input of the preamp via a relay.

EQUALIZER USER CONTROLS

Frequency controls: one per band, marked 30Hz - 300Hz; 200Hz - 2kHz ;
0.8 kHz -8 kHz ; 1.5 kHz - 15 kHz. Set band centre frequencies.

Boost/Cut controls: one per band, marked LOW, MID 1, MID 2, HIGH. Set band boost or cut over range +l8dB.

Low shape Button: When out, low band response is bell shaped. When in,lowband response is shelving.

Hi shape Button: when out, high band response is bell shaped. When in,high band response is shelving.

IN Button: when out , EQ is bypassed. When in, EQ is inserted in the signal path.

CH button: Allows the equalizer to be inserted into the audio path of the preamplifier to form a channel.