I recently bought a 704A Altec receiver for 200$ cnd from a friend of mine. I have no information concerning the specs and exact age of that receiver. Only thing I know is that sounds great for the price I paid. It's plugged with Goodmans Vintage 3 ways speakers, Model Magnum SL, 12 inches woofers, 5 inches mid range, 1 inch tweeter, 50 w RMS 8 omhs imp 2w:sens. If anybody have pertinent information about this receiver, please send it to me.
audio lover