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Stereo 20

  

Valve Amplifier Instructions

 

 

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 Guarantee 

 

1 Introduction 

 

Thank you for purchasing one of our amplifiers, a 
lot of care has gone into the design, selection of 
components and production of this amplifier. We 
are sure that you will hear the difference.  

 

The Stereo 20 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. We have 
used top quality audiophile components 
throughout. The simple design means the Stereo 
20 is capable of a smooth detailed illumination of 
you recordings without harshness or listening 
fatigue. 

 

Despite its moderate price and compact size, 
with the suitable source material and 
loudspeakers the Stereo 20 is capable of 
stunning performance! 

 

We cannot emphasize enough about the 
importance of using efficient quality speakers. 

 

Icon Audio would like you to get the best out of 
our amplifier. Please read the enclosed notes. We 
have tried to give you all the basic information you 
will need, even if you are not experienced with hi 
fi. 

We would recommend that everyone follows 

the ‘quick set up guide’. 

Should you be 

uncertain about anything to do with your STEREO 
20 please contact your dealer or ourselves. 

 

Hi fi reproduction is a long chain of events 
processes that starts with the acoustics and 
mixing in the recording studio, before being 
transferred to a medium such as LP, CD, or FM, 
ending with the playing through your own player, 
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 the ‘weakest 
link’ will always affect the final results when 
making judgements.  
An amplifier which faithfully reproduces the input 
signal will of course also reproduce imperfections 
in the tonal balance and the recording itself. 
 

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