Quicksilver Preamplifier Operating Instructions
Quicksilver Audio Full Function Preamplifier
Operating Instructions
Thank you for purchasing the Quicksilver Audio Full Function Preamplifier. This piece of musical equipment has been
engineered to have a very wide bandwidth, extremely low distortion and superior dynamic range.
This all-tube preamp has a uniquely low output impedance, allowing it to drive very long interconnectcables and any
available amplifier, whether tube or transistor.
The preamp circuitry is non phase-inverting.
This device has very high internal voltages. Never operate with protective grills or base
removed. Any attempt at tube replacement must be done with unit disconnected from any
AC power source.
In some instances the mute switch may need to be depressed when the preamp is turned
on and off. See MUTE section.
PLACEMENT
For adequate ventilation allow at least 4 inches of space above the preamplifier.
SYSTEM GROUNDING
Your preamp has a three pronged grounded AC plug. For best grounding the Quicksilver preamp
should provide the system ground. If you ground other pieces independently a slight hum may be
audible.
MUTE
The safest system turn-on is to always turn the power amplifier ON LAST.
If you choose not to do this then you must depress the mute switch for 60 seconds after turn-on.
This is to avoid the appearance of DC voltage at the output of the preamplifier which may damage
some amplifiers and speakers.
When Quicksilver amplifiers are used, then the preamp and amps may be turned on at the same
time without the use of the mute switch.
Upon turn-off, the preamp automatically mutes.
NOISE
A small amount of hiss from the speakers in most systems in normal. If excessive noise is
noticed from the preamp, with the volume controls turned all the way down, then the 12AU7
line input tube may be bad. If the noise disappears when the mute switch is pushed in, this is
most likely the cause.