+1 gs5556 good pickup.
Yes the switch should be up to separate, in case you missed it. If not you have too much gain get the Schiit.
http://www.radiomuseum.org/images/radio/pioneer_corporation/stereo_amplifier_sa_700_468494.jpg
http://www.njuskalo.hr/image-bigger/hi-fi-komponente/pojacalo-pioneer-700-slika-48478974.jpg
Cheers George