User Manual

RackPack: Premium Mic Pre
7
When recording acoustic instruments or vocals, using a microphone
is inevitable. The actual output level of a microphone is very low and
therefore has to be boosted to studio or line level (0 dB) with a pream-
plifier. Sometimes signals have to be boosted by a factor of 2000 or
more. As a consequence, the resulting sound quality provided by the
preamp is of paramount importance, so a good microphone preamp
that does not overdrive is the definitive requirement in order to record
acoustic instruments or vocals with sufficient dynamics and untainted
sound.
The section “technology“ from page 14 explains how the Premium Mic
Pre complies with these requirements on the highest level and how it
delivers premium results even in difficult and critical set-ups.
Even the less technically interested users get an impression of the great
efforts it takes in development, circuitry design, selection of parts and
assembly to create a product on the Premium Mic Pre’s quality level.
From there we deduce a superior price/performance ratio – emphasiz-
ing on the performance which lends the Premium Mic Pre a world-class
sound quality.
Main Features
The Premium Mic Pre offers preamplification values of up to +80 dB
with lowest noise operation and a high common mode rejection.
Input stage and Output 1 are equipped with Lundahl Transformers
(High Performance Series).
A VU meter with two modes for average levels (VU) and peak levels
(PPM) displays the output levels.
A very stable phantom power supply (48V) is provided to power con-
denser microphones.
The polarity of the microphone can be switched with the phase reverse
switch.
A high-pass filter protects against low frequency interferences.
Two LEDs are placed into the VU window to concentrate all displays in
one area.
The signal LED indicates that an input signal is present, the overdrive
LED warns against potential overdrives.
Introduction