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Printed!in!GERMANY!© 2013 rockruepel Pro.Audio. All rights reserved.
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3 - Preface
Congratulations on your rockruepel comp.two (version2)!
You now own a versatile vari-µ-compressor. The comp.two is designed for mastering, mixing
and recording and offers a pristine and highly transparent sound due to its exclusive audiophile
approach.
After years of development and searching for optimal sound and design, I have developed the
comp.two resulting in one of the best sounding modern vari-µ-compressor. This stereo/dual-
mono-compressor is optimized for daily professional use. The rockruepel comp. two would not
be what it is today, without feedback and advice from colleagues and friends.
The function of the comp.two is based upon the optimized vari-µ-design and never
compromising on high-end components and a minimalistic approach. The deciding factor in
design were always my ears.
The comp.two is built on fully-balanced tube-circuitry. The main audio path consists of
SOWTER input- and output transformers (SOWTER), two high-end coupling capacitors, input-
and output-tubes (NOS 6N3 and 6CG7).
The „true“ dual mono-design has separate power supplies for every channel. The
potentiometers are encapsulated, quality products from ALPS. The VU-meters can be calibrated
with a trim-pot hidden behind small holes in the rugged front plate. All switches use relays or
directly determine control voltage. The two bypass-switches separate circuitry, so that only input
directly connects with the output (true bypass). An IC is used to regulate the VU-Meter. Apart
from that circuitry, the comp.two consist of discrete components and is hand wired in Germany.
In addition to the essential controls such as input, output, threshold, attack and release, the
comp.two provides a side chain with an integrated four-stage filter. (Flat, 50, 74, 110 and 160
Hz). This filter takes out high-energy bass frequency
that could otherwise affect the compressor’s
behavior. The special “amp-only” -mode uses only the
in- and output-stages and not the compression.
Some may say: “Tube-compressors sound good but
they are too slow. I prefer VCA-compressors because
of their speed“. The comp.two accomplishes both,
with an attack up to 600 µs it is extremely fast but it
also has a soft and really musical knee compression
for your sound processing.
Thanks for buying the rockruepel comp.two.
Oliver Gregor & Stefan Heger
4 – Included in box
• rockruepel comp.two
• IEC power plug
• owner’s manual
• audiophile, full-balanced circuitry
design
• aluminum chassis with rugged front
plate (6 mm)
• SOWTER-transformers
• ALPS-potentiometers
• VU-meter
• output-tube: 6CG7
• input-tube: NOS 6N3
• high-end coupling capacitors
• amp-only-mode
• true hard bypass
• true dual mono with separate power
supply
• side chain-control (54, 74, 110, 160
Hz)
• THD+N: -68 dB
•
attack-time: 600 µs - 70 ms
• release-time: 0,2 ms - 4 s
