Manual

Design Features
The Pre1 output stage uses the latest integrated
technology to combine multiple amplifiers and
Laser trimmed precision resistors in a true
balanced output stage. This balanced stage
mimics the operation of a transformer, providing
ideal line-level audio drive into either a balanced
or single-ended load. This operation eliminates
ground loop issues with power amplifiers when
used with either the RCA outputs or the XLR.
This assures maximum signal to noise and
extremely low distortion with the shortest audio
signal path.
The power supply uses a separate low noise
regulation for each channel’s gain stage. Audio
grade decoupling capacitors, star grounding and
careful signal routing insure that low-level
signals are preserved.
The volume control is a precision Crystal 3310
potentiometer controlled by a microcontroller.
This device provides extremely low noise and
distortion coupled with high accuracy. We have
found the sonic quality to be as good as or
better than the best potentiometers and
switched attenuators with a long useful life and
no wear.
The input processing provides two (2) true
balanced input connections and three (3) RCA
jack connections plus Tape In. The Tape Output
is an RCA output with an active audio-grade
buffer preamplifier to isolate the internal signal
bus from the tape output. The main outputs are a
single-ended RCA and a balanced connection
for use with balanced cables and power
amplifier inputs.
The elegant simplicity of the signal path and gain
stage allows the Pre1 to preserve the audio
signal quality.
Warm Up
The Pre1’s sonic performance will start to
stabilize after approximately forty (40) hours of
continuous power up.