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This overhaul includes replacement of carbon composite resistors which are likely to have gone out of value, using quality components. All the small non-electrolytic's capacitors will be replaced with either polypropylene foil or polystyrene foil capacitors. The two original PIO capacitors will be replaced with similar Russian military spec units.  Note will leave original polystyrene's in place if value measures within tolerance. Also included is cleaning of switch gear and pots, testing of valves on avo valve tester- report on valves given. After overhaul we will test your unit connected to our own Quad II system. 

Please note this is the mono pre-amp with round push buttons

Not included in quoted price - Replacement or supply of valves, main HT decoupling capacitor (smoothing capacitor) these capacitors will be quoted for if required or any missing parts (report will be given with advice on how to rectify any found missing parts, cables or faulty components) not covered in the service - ie -broken sockets or connectors, broken or damaged pots. Or faulty filter coil. Please note if your amplifier has been previously modified, this may alter the work that is required. You will be advised if this is the case. 

Return tracked postage within the U.K is included in the price. 

Overseas - You must contact us first for return shipping quote before proceeding.

We envisage depending on work capacity, that we can return your overhauled amplifier to you within a two week period, from receiving the item. We ask that senders ensure that their amplifier is sent to us tracked and signed.


And we receive the tracking number please. 

We can also offer a finishing respray service for your amplifier POA. This process takes between one to two weeks to complete, depending on condition. Picture three is a refinished QC2 front panel.

The cost of this service including return tracked postage within UK is £135.00

Please note photographs are for demonstration purposes only. The appearance of some of the components may change dependent on availability.

We also assess and repair other valve based amplifiers, for further details please contact us via the website below.



Quad QC II Pre-amp control unit. Electronic overhaul, Repair (you send your amp)

  • Within UK the cost includes return tracked postage.

    For overseas please contact first as this may be expensive. 

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