Sonogy
TM
"The delicacy of tubes.
The authority of transistors."
Concerto
™
Modular Preamplifier
Owner's Manual
Introduction
:
Thank you for purchasing Sonogy's Concerto™ preamplifier system. It represents some of the most
unique and advanced thinking on how to combines unrivalled sound quality with practicality and ease of
use. If you take the time to read this manual, we believe that you will enjoy your Concerto all the more.
Don't Blow Up Speakers!!!
CARELESS USE CAN RESULT IN SPEAKER DAMAGE. PLEASE READ THIS MANUAL
CAREFULLY. IN PARTICULAR READ THE FOLLOWING:
When preamps are turned on and off, the electronics are momentarily unsettled, and can produce a
"thump". If your amplifier is on, it will make this thump 20-100 times louder, and could damage, or
destroy, your speakers. Only turn this product on or off, or connect wires, with speakers disconnected or
with your power amplifier off.
Caution! Install Power Supply with CARE
The power supply for the Concerto is detachable from the preamplifier chassis for your convenience.
However, if misused, you can seriously
damage
the power supply, the preamplifier, or both. NEVER
connect the power supply to preamp with the power supply on and plugged in. If you are in doubt, make
the DC connection BEFORE plugging the power supply into the wall.
Warm-up (important!):
The Concerto requires extensive warm-up in order to sound its best. We strongly recommend that you
plug in the Concerto, turn it on, and let it warm up for 24 hours before expecting excellent performance.
We also strongly recommended that you allways leave it on - 24 hours a day - except to move or service
the preamplifier.
Product Description:
Sonogy's Concerto is a modular preamplifier. Both phono and the common "line" stages, are provided on
plug-in circuitry so that they may be easily installed, removed, replaced, and upgraded. The phono circuit
card is optional.
We don't feel that in order to enjoy superb sound you should give up convenience and flexibility. While
the circuitry and layout are simple and optimized for extraordinary sound, we included many convenient
features which make the Concerto a truly enjoyable product to own and use. We think that this
combination of performance and convenience is rare, and hope you find it as enjoyable as we do.
