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Purple Audio Biz preamp 500 series API

A unique sounding, three amplifier, discrete microphone preamp module.
The smooth Gain control helps you dial in the sound you want. If the output level is too high (the Class A/B output opamp can pump out up to +27 dBu), you can ride the level down with the separate Level control.
Pressing the "Dual" switch splits the gain between two of our Class A opamps, enabling up to 75 dBu of clean gain, making the Biz a perfect match for ribbon microphones.

With different Gain, Level, and Dual settings the Biz can produce an infinite variety of tonal variations with the same amount of output level. The front panel DI helps you record instruments and line level sources with unrivaled clarity and punch.

Two LEDs clearly indicate signal level for the gain and output stages at a glance, turning green to indicate signal present, yellow for 10dB below clipping, and red for clipping. The Biz uses two KDJ3 opamps and one KDJ4 opamp.

FEATURES
Output level control

Input and output tricolor LED metering

Mic / Line switch for rack input Bridging line input for high output mics or line level sources Use with our Moiyn 8x2 mixer module in the Sweet Ten Rack for mic or line mixing

DI Load switch for front panel input 33kohms as in the original Biz or 100kohms for a more open tone

Discrete signal path