Cassette Deck Service with 30 years of experience. All started as a hobby in latest 80's but last 15 years became serious work. Nakamichi decks are my favorite as i work with them from 1st day. Also "almost" all test/calibration gauges have for servicing them. Right after are Revox, Aiwa, Alpine/Alpage, Teac and Luxman. Of course thru all those years was successfully serviced also other deck brands like Sony, Tandberg, Pioneer, Akai, Technics,...and many more.