It's an early Philips stereo cassette deck, not bad quality by the standards of the day but not really HiFi. It predates Dolby B and instead uses the Philips Dynamic Noise Limiter, a sort of playback noise gate. They are quite sought after by collectors but aren't worth hundreds.
The mics are just consumer grade dynamic mics of the era, not awful by any means but nothing special. The connectors on this deck are
DIN.