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Final Inspection - Your Guarantee of Quality

 

 

To  assure  you  of  optimum  performance  and  reliability,  this  amplifier  has  passed  our  rigorous 
final inspection and listening test by the Icon Audio team in Leicester . During which the final set 
up and adjustments were made. 
 

 

Date   

 

 

 

…./…./…. 

 

Model  

 

 

 

………. 

 

Amp Serial Number  

 

………. 

 

Customer 

 

 

 

…………………………… 

 

 

Check amplifier finish 

 

………. 

 

Internal wiring check  

 

………. 

 

Check Triode mode  

 

N/A 

 

Run min 6 hour test  

 

………. 

 

Check inputs  

 

 

………. 

 

Output Valve Bias level 

 

……...v 

 

Sound Quality 

 

 

………. 

 

Channel Balance 

 

 

………. 

 

Valve Microphony   

 

………. 

 

Valve Seating 

 

 

………. 

 

Hum level left/right   

 

.....

/…..mv 

 

RF Test  

 

 

 

………. 

 

LED brightness 

 

 

………. 

 

Serial No sticker and recorded 

………. 

 

Mains voltage  

 

      110 / 240V 

 

IEC Mains Fuse 

 

 

………A 

 

UK Plug fuse  

 

 

3A….... 

Soft Start Fitted 

 

 

………. 

 

Sales invoice  

 

 

………. 

 

Bottom label   

 

 

………. 

 

Credit card receipt   

 

.……… 

 

Customer survey form 

 

.……… 

 

Bias meter 

 

 

 

………. 

 

Transformer Protection 

 

………. 

 

Upgrades:

  

 

HT delay fitted? 

 

Not Available 

 

Output valves 

 

……....………. 

 

1

st

 Stage valve 

 

………………. 

 

Phase splitter valves 

………………. 

 

Capacitor grade (Audio) 

 

………. 

 

Capacitor grade (Power)   

………. 

 

Mains lead   

 

 

………. 

 

Interconnects 

 

 

………. 

 

 
 
Signed off by  

 

………………………. 

 

Notes: 
 
 
 
 
 
 

Summary of Contents for Stereo 25 MK II

Page 1: ...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...

Page 2: ...e mode N A Run min 6 hour test Check inputs Output Valve Bias level v Sound Quality Channel Balance Valve Microphony Valve Seating Hum level left right mv RF Test LED brightness Serial No sticker and...

Page 3: ...cator should light up Leave for at least 60 seconds for the valves to warm up The amplifier should now be working All valves should have a visible orange glow from the cathode heaters With the volume...

Page 4: ...r 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 degrade the so...

Page 5: ...On no account use anything wet on the amplifier and always clean with the power disconnected 5 Trouble Shooting Amplifier Dead Check the IEC socket mains fuse at the back of the amplifier To gain acce...

Page 6: ...adjustment this affects all valves This will only rarely need adjusting if at all as the amplifier can compensate for some valve deterioration This has the advantage of higher power and cooler runnin...

Page 7: ...arely detectable hum from the speakers and the amplifier should sound OK When tested If the valves are not matched the highest reading valve should be limited to 10v 6 If you cannot set up 8v then the...

Page 8: ...e in other situations The guarantee becomes void if the unit has been modified in any way not approved by Icon Audio 10 Packing Instructions It is essential that the original custom box and packing be...

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