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Instruction Manual Covering:
Stereo 60 MK IV
Integrated Amplifier
Stereo 60 MkIV Integrated Amplifier shown with upgraded driver valves
Contents
1 Introduction
2 Final inspection
3 Quick set-up guide
4 Connecting inputs & outputs
5 ST60 MK IV as a Power Amplifier
6 Getting the best out of your amplifier
7 Trouble Shooting
8 Bias Adjustment
9 Valve Replacement
10 Specifications
11 Guarantee
12 Packing Instructions
1 Introduction
Thank you for purchasing the Stereo 60 MK IV. A
great deal of care has been taken by our team in the
development, production and testing of this amplifier.
We are sure that you will hear the difference!
WHAT IS THE STEREO 60 MK IV?
Our biggest push-pull integrated amplifier. We wanted
create an valve amplifier technically as near perfect as
possible using modern design techniques.
To do this we have a generous power supply, low
distortion drive circuity designed around the new
KT150/120 valves and our high own high definition
low distortion LDT output transformers. Now in its
fourth incarnation the ST60 has been upgraded each
time to make it one of the finest high power integrated
amplifier available. In addition, we have incorporated
features like switchable TRIODE mode and adjustable
sensitivity well as 4 Ohm outputs to match a wide
range of operating conditions.
In
“Ultralinear” mode the power is 85W x2 In the
vintage TRIODE mode which many prefer the output
is still a very usable 50W x2 with a slightly more
“mellow” presentation.
The pre-
amp is a high quality ‘Passive’ circuit using
silver plated copper PTFE audio cable and an
ALPS volume control. It is sensitive enough to be
used with all modern source equipment. Its
simplicity coupled with point to point hand wiring
without the use of printed circuit
board’s results in
an open euphoric sound that is wonderfully detailed
and warm sounding.
The ST60 MK IV was specifically designed to get
the best out of the excellent KT150 valves.
A built in meter simplifies bias and valve condition.
Compatibility with the older KT88/6550 is retained
and the amplifier may be de-rated in order to use
these.
In order to get the best out of your amplifier,
please read the SET UP GUIDE first.
Even if
you are experienced with valve amplifiers.
Should
you be uncertain about anything to do with your
amplifier please contact either your dealer or Icon
Audio for advice.
IMPORTANT!
THIS MANUAL CONTAINS
ESSENTIAL HEALTH & SAFETY
INFORMATION FOR YOU AND
YOUR AMPLIFIER. PLEASE
READ & KEEP SAFE AND
REFER TO IF NECESSARY