Quicksilver SET Mono Amplifier Operating Instructions

Quicksilver Audio SET Mono Amplifier

Operating Instructions

Thank you for purchasing the Quicksilver Audio  SET Monos.  Simplicity and affordability are what these

amplifiers are all about.  Enjoy!

The Single Ended Triode Mono Amp achieves a transparency and clarity that is not possible in

push pull designs.  This will be most evident on  high efficiency speakers (greater than 100db 1

watt 1 meter).

INITIAL TURN-ON

Insert the tubes in their proper sockets.  It may be difficult to insert the KT88 the first time.  Gently move

it back and forth a few times in the socket until you feel the pins move into the socket; then push the tube

down firmly into the socket.  If the tube pins are not properly lined up in the socket before you push the

tube in, you may bend the tube socket  pins.    Connect the amp into the system and turn it on.   The amplifier

is self-biasing so no adjustments are necessary.

FUSE BLOWING

If the 1.5  amp (slo-blo) fuse blows, replace it with no larger than a 2  amp fuse. If the fuse continues to blow

an output tube could be damaged;  or there may be other problems, such as poor system grounding, an

unstable preamp, a shorted speaker, etc.  Interchanging the cables between channels can help determine

if the problem is in the system  or in the amp.

TROUBLE SHOOTING

I

f the sound from one amplifier is distorted and you suspect the amp,  switch output tubes between

amplifiers to determine if an output tube is bad.

TUBE REPLACEMENT

The SET Mono␣ is sold with a KT88 output tube; but EL34s, KT77s, KT66s, 6L6s and 6550s can also be used;

however both output tubes must be the same type.  Output tubes must be replaced as a matched pair and

should be purchased through Quicksilver Audio or a Quicksilver dealer.  Quicksilver output tubes are

“burned-in” for 10 hours prior to matching, and their performance is guaranteed.

The small tube in the SET Mono is a 6H30 and should  only be replaced with that number.  Other types

should not be used.

The 5AR4 rectifier tube has a slow warm up feature and should not be replaced with substitutes.

SPECIAL FEATURES

The Quicksilver SET Mono uses no circuit boards or transistors.  It is hand-wired, uses gold-plated input

and output connectors,  and has a very high performance output transformer.