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Quad II earthing

rockingdoc

pfm Member
I have a pair of Quad II amps that I plan to use with a Sugden Masterclass preamp. The Quads have had a service, but retain the original Bulgin two pin mains connection.
I would appreciate advice on whether it is necessary to make an earth connection through a three-pin plug, e.g. I could fit iec sockets to the amp chassis.
 
Strictly speaking you should have a proper mains earth as they are not double insulated but in practice they will be earthed through the input.

If there was a fault and you unplugged the preamp you / the preamp may get bit of a surprise.
 


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