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Instruction Manual Covering:
Stereo 60 MK 3
Integrated Amplifier
Pre-production sample. With transformer alignment damage courtesy of DHL air freight. This problem does occur with normal container shipping!
Contents
1 Introduction & Final Inspection
2 Quick Set Up Guide
3 Connecting inputs & outputs
4 Getting the best out of your
amplifier
5 Trouble Shooting
6 Specifications
7 Valve Replacement
8 Guarantee
9 Packing Instructions
1 Introduction
Thank you for purchasing the Stereo 60 MKIII. A
great deal of care has been taken by our team in
the design, components and handmade
production and testing of this amplifier. We are
sure that you will hear the difference!
WHAT IS THE STERO 60 MK 3?
A very powerful integrated amplifier (85 + 85 watts
both channels driven) with very low distortion. Our
latest design with our new LDT transformers has
the best specification we have ever created. It is
the equal of many far more expensive amplifiers
The Stereo 60 MKIII is a push-pull Ultralinear
stereo power amp, capable of running in either
pentode ultralinear, or pure triode mode, using the
excellent KT120 or KT88 valves in fixed bias
mode. The driver and phase splitting is all triode.
The ST60 MKIII may also be used as a power
amplifier. The pre-amp is a high quality ‘Passive’
circuit using silver audio cable and an ALPS
volume control. It is sensitive enough to be used
with all modern source equipment having an
output of around 300mv or greater. 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 mark 3 is a third generation amplifier
specifically designed to get the best out of the
excellent KT88/6550 valves, in this model we
have also optimised the circuit and output
transformers to work with the new Tung Sol
KT120 valve. When a power valve is working
some of the energy is lost as heat, and all valves
have a maximum dissipation, in the case of the
KT88 this is 40 watts. The new KT120 can
dissipate 60 watts, a considerable increase which
we take advantage of to generate more power,
and also means the KT120s are working well
within their maximum thus giving greater reliability
and a longer life. If you decide to use KT88/6550
these will work as well as they did in the mark 2
version at slightly lower power.
In order to get the best out of your amplifier,
please read the SET UP GUIDE first.
Even if
you are experienced with hi fi.
Should you be
uncertain about anything to do with your amplifier
please contact us for advice.
