Our standard Quad II service includes: • Fault diagnosis, during this period, if the choke,transformers or valves, measure as faulty, we will contact you and provide a replacement quotation. Faulty components apart from the transformers, valves and choke, will be replaced. • Replacement of  cathode bypass and TTC can type dual electrolytic smoothing capacitors. The white capacitors shown in the photo are high performance 16uF 600V polypropylene foil and not electrolytics. The low ESR and longevity is superior to electrolytic capacitors. These can only be fitted if the voltage selector is removed, which we recommend anyway for safety. * • Replacement of signal coupling capacitors with high quality polypropylene types with copper foil screening. • Full complement of resistors replaced with High stability, low noise, high tolerance metal film types. • Full performance test and adjustment. • Finally, after a listening test, we carry out a 48 hour soak test, followed by an electrical safety test PAT*. NOTE 1: Our standard price does not include replacement of faulty valves, chokes or transformers. We can add valves at cost.  NOTE 2: It is highly recommended that you send your Quad 22 and Quad II together, so they can be properly electrically tested.  An unmodified Quad II used as a standalone amplifier is potentially lethal without correct earthing. The earthing is normally  completed through the combined Quad 22 mains connector and umbilical cable.  If you want to use your Quad II as a standalone amplifier, please see details of our Quad 2 connector upgrade Q2FSCU option.  *NOTE 3 If you prefer the look of the original cuboid TTC smoothing capacitor, we can fit and wire new electrolytics inside the old can. For this option please add £30.00 to the service charge, for the extra work involved.(It is not as good electrically or as long lasting, as the Polypropylene types),

This image, ‘under the Quad II hood’ shows the neat appearance after service.