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Hello and thanks for taking the time to read this post.


 I purchased a pair of quad boards from here :


  1.  Does anyone have experience of these, How do they compare against standard quad boards.


  2. The first four luger-style connectors are identical to my quad boards: that is phono input, then speaker out, then -54volts, then +54 volts, unfortunatly there is a fifth luger connector labelled " gnd " which my quad boards do not have, i contacted the manufacturer who said it is the power ground, so i connected it to the smoothing capaitors of the power supply, when switching on i got massive distortion then both boards blew. Does anyone know where i went wrong.


 Many thanks in advance.. John.