just got this jam box from a friend of mine in nyc. it's a big old GE 3-6000.it's in perfect condition and it cranks like you wouldn't believe. love the sound of these old boxes. the various manufacturer experimented quite a bit back in the day, trying different things with different features and all that, so you can get what you want. this one is kinda space age, the transport controls are in this recessed place which is very hep because sometimes those buttons will get damaged if they hang out front, but here they are safely tucked away. the unit is kind of a thinline type design. the knobs and switches feel very positive and required no cleaning upon arrival. i have been listening to tapes non-stop since i unpacked it.