JVC model TD-W106 stereo double cassette tape deck

JVC model TD-W106 "Stereo Double Cassette Deck" with "Synchro-Dubbing". This tape player is marked for playing metal, CrO2 or "normal" cassette tapes. It is also marked as a "Dolby-B NR System". It measures about 17" long, 8.5" deep and 5" high. We hooked this up (through a stereo amplifier) and both tape decks work fine, but the tab on the "dubbing speed" control is broken off, but you can still adjust the control.