Three amplifier, discrete mic preamp module
The Purple Audio Biz Mk is a unique sounding, three
amplifier, discrete microphone preamp module designed to work in standard
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
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.
For easy serviceability and tweaking, the Purple discrete
opamps can be replaced with any standard discrete opamp or a DIP-8 IC. The Biz
uses our custom output transformer which provides two isolated outputs (when
supported by the chassis).
The Purple audio Biz Mk, the same Biz you love with two new
- 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
- DI Load switch for front panel input 33kohms as in the
original Biz or 100kohms for a more open tone