ive had the ap20 then the ap35 and also the pre/power of the time (cant remember the serial numbers). in a word, superb! never a hint of a problem, i mainly used them with royd speakers and the combination kept me happy for years. very open sound with plenty of power from what seems like a small box. the dedicated cables (ls1 and soundpipe) were good too.

if this is the same gear as was being produced in the late 80's up to mid 90's its a fine stable of products indeed and well worth the money. they also used to do a thing where you could upgrade your existing piece of kit for a new one and nva would give you a very good deal on your old stuff (not sure if it was full value?) if your buying one im sure you will like it.