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Instruction Manual Covering:
Stereo 40 Mk 2
KT66 & KT88 versions
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 40i
Classic
. A great deal of care has been
taken in the design, selection of components and
production of this amplifier. We are sure that you
will hear the difference.
In order to get the best out of your amplifier,
please read the enclosed notes. Even if you are
experienced with hi fi
Please read the ‘quick set
up guide’.
Should you be uncertain about
anything to do with your amplifier please contact
us for advice.
Hi fi reproduction is a long chain of events that
includes the recording, editing, mixing etc, before
being transferred to a medium such as LP, CD, or
FM, before being played through your own source
unit, the amplifier and finally loudspeakers.
Your room acoustics will also affect the sound
before it finally reaches your ear. Whilst the
amplifier is arguably the most important part of a
system, it is important to remember that the
weakest link will always affect the final results
when making judgements. And not all recordings
are ‘equal’! Therefore an amplifier which faithfully
reproduces the input signal will also reproduce
imperfections in the tonal balance and the
recording itself. Therefore setting up and
judgements should be made with a ‘clean’ well
balanced recording.
The
Stereo 40i
is a push-pull Ultralinear
stereo power amp, capable of running in either
pentode ultralinear or pure triode mode, using the
excellent KT66/88 valves in fixed bias mode. The
driver and phase splitting is all triode. The pre-
amp is a high quality ‘Passive’ circuit using silver
audio cable and an ALPS ‘blue’ volume control. It
is sensitive enough to be used with all modern
source equipment having an output of 300mv or
greater. Its simplicity coupled with point to point
wiring hand wiring without the use of printed
circuit boards results in an open euphoric sound
that is wonderfully detailed and warm sounding.
This manual also covers the SE & ‘ie’ model,
where the silver audio cable, tape monitor
loop & triode circuit and are omitted.
