Nice example of this classic Quad pre which looks to be in all original condition. Basic test carried out with video taken, no obvious issues. Mullard EF86 fitted and Mullard ECC83,  tested 83 valves which gave a positive result on the Orange V 1000 Tester. 

Please note one of the Bulgin plugs is missing as can be seen in pictures, Bulgin mains cable & manual Included.  As a classic vintage pre this should be checked/serviced by a competent person before putting into regular use. The internal components seem all original and although working as it should there may be some of these which are performing below optimum specifications. The front panel is very good with a few small chips and the plastic buttons are excellent. Case is good original condition but shows some general signs of use commensurate with age on the top as cam be seen in last picture.

Please study the pictures to satisfy yourself of the condition and please ask any questions before bidding, thanks.