toshiba 665

I have an opportunity to buy a Toshiba SC-665 amp, SY-665 pre amp and ST-665 tuner for about $200. The seller says they're in mint shape and has been using them as his main set up lately. Currently I'm running a Dual 505 TT and a pair of Dynaco A25s through an Akai AA-R20, and I want to upgrade...