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Instruction Manual Covering: 

 

Stereo 300.1 

Integrated Amplifier

 

 

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 Bias Checking & Valve 
Replacement  

 

8 Guarantee 

 

9 Packing Instructions 

 

 

1 Introduction 

 

Thank  you  for  purchasing  the 

Stereo 

300

.  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. 

 

The 

Stereo  300

 

is  a  push-pull  pure 

triode stereo power amp, using the excellent 300B 
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  hand  wiring 
without the use of printed circuit boards results in 
an  open  euphoric  sound  that  is  wonderfully 
detailed and warm sounding.  
 
In  order  to  get  the  best  out  of  your  amplifier, 
please  read  the  enclosed  notes  even  if  you  are 
experienced  with  valve  amplifiers, 

We  would 

recommend that everyone follow the ‘quick set 

up  guide’.  This  will  enable  to  get  the  best 
performance from your Stereo 300. 

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, and finally played through your own system. 
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. 
 

          IMPORTANT! 

THIS MANUAL CONTAINS 
ESSENTIAL HEALTH & SAFETY 
INFORMATION FOR YOU AND 
YOUR AMPLIFIER. PLEASE 
READ & KEEP SAFE AND 
REFER TO IF NECESSARY 

Содержание Stereo 300

Страница 1: ...etailed and warm sounding In order to get the best out of your amplifier please read the enclosed notes even if you are experienced with valve amplifiers We would recommend that everyone follow the quick set up guide This will enable to get the best performance from your Stereo 300 Should you be uncertain about anything to do with your amplifier please contact us for advice Hi fi reproduction is a...

Страница 2: ...or Output Valve Bias level mv Hum level left right mv mv RF Test Power out 1khz 8ohms L R Channel balance V DB Sound Quality Valve Microphony Valve Seating LED brightness Serial No sticker and recorded Mains voltage 110 240V IEC Mains Fuse A Soft Start Fitted Sales invoice Bottom label Credit card receipt Customer survey form Test remote control Bias meter Remote send receive Remote in box Transfo...

Страница 3: ...egin after the unit switches the HT on approx 40 70 secs your may hear very low distorted sound from the speakers during the warm up time This is because there is virtually no HT to operate the amplifier We suggest you reduce the volume until the HT cuts in The red light on the front indicates when the HT delay is operating 7 Your unit should now be functioning If not check wiring again and Use se...

Страница 4: ...ay be better and be cheaper to re arrange your room and use shorter cables than to spend a fortune on longer cables You can either hard wire your cable to the amplifier by baring enough cable to fit in the connector and twist together to avoid any spare strands touching anywhere else soldering the stands together helps Be warned this amplifier does not have an output protection device which would ...

Страница 5: ...months of regular use before it is fully run in Upgrading Valves This can be a controversial subject but in our opinion quality valves should have a good service life maintain their performance and should be reliable the last three items will make a valve sound better longer The upgrade valves supplied with selected models are the result of careful comparison with other makes Cabinet Care To remov...

Страница 6: ...ese fail the performance of the amplifier is unaffected Should you prefer to have the amplifier working without the under chassis LEDs we can supply information how to disconnect upon request Service Should you suspect a problem you could return the unit to Icon Audio or your dealer for a periodic service or return the valves for testing free of charge You should carefully remove the valves the 30...

Страница 7: ...ly faulty or out of specification If you are unable to set the reading high enough this means the emission of the valve is low Replacing The Valves Icon Audio are happy to advise on replacement valves and the performance of your amplifier we can also advise on the latest upgrades available If you decide to do this yourself please read the following notes first Important Do not attempt to change th...

Страница 8: ...t of replacement based upon a 12 month period LEDs used for aesthetic and décor purposes are not covered This amplifier is designed for normal domestic hi fi use It is not guaranteed for commercial Public Address use or use in other situations The guarantee becomes void if the unit has been modified in any way not approved by Icon Audio 9 Packing Instructions It is essential that the original box ...

Страница 9: ...off 3 Remove the bottom packing first 4 Turn the unit the right way up and remove the top packing Please be careful not to damage the small tape monitor and triode switches on the front panel When re packing ensure the two hand cut outs are towards the rear of the amplifier If all four feet do not sit level small adjustments may be made by adjusting one or more of the screw feet until the unit sit...

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