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User Manual for
Stereo 20PP
Integrated Amplifier with Headphone Socket
Contents
1 Introduction & Final Inspection
2 Quick Set up guide
3 Connecting inputs & outputs
4 How to get the best out of your amplifier
5 Trouble Shooting
6 Specifications
7 Valve Replacement
8 Packing
1 Introduction
Thank you for purchasing one of our amplifiers, a
lot of care has gone into the design, selection of
components and hand made production of this
amplifier. We are sure that you will hear the
difference.
The Stereo 20PP is a MKII of our earlier ST20 the
PP denotes “Push Pull” in contrast to our ST20SE
“Single Ended” design. It is an integrated stereo
amplifier using the excellent EL84 pentodes in
class A/B giving the first few important watts in
‘Class A’ then sliding into ‘Class B’ at higher
powers. The first stage is a 12AX7 double triode
(one ½ per channel) driving a 12AU7 phase
splitter. The simple design means the Stereo 20 is
capable of a smooth detailed illumination of you
recordings without harshness or listening fatigue.
Important improvements to the ST20PP are the
incorporation of a “proper” headphone socket,
which utilises dedicated windings in the
transformer to give the best possible match to
your headphones. The switch on the front allows
you to mute the loudspeaker output.
Also incorporated are our new “Low Distortion
Tertiary” output transformers.
Despite its moderate price and compact size,
with the suitable source material and
loudspeakers the Stereo 20 is capable of
stunning performance!
When choosing loudspeakers you should aim for
as large as possible with the rated efficiency
above 90db. Smaller speakers need more power
and the bass output is lower..
We would like you to get the best out of our
amplifier. Please read the enclosed notes.
Please
follow the ‘quick set up guide’.
Should you be
uncertain about anything to do with your STEREO
20 please contact your dealer or ourselves.
IMPORTANT!
THIS MANUAL CONTAINS
ESSENTIAL HEALTH &
SAFETY INFORMATION FOR
YOU AND YOUR AMPLIFIER.
PLEASE READ & KEEP SAFE
AND REFER TO IF NECESSARY
