Behringer VMX200 professional VCA mixer. 

Has BPM counters. 

2 channel. 

Comes in original box with power cable. 

Used but fully working. 

Missing the knob from channel 1 selector but still works as it should.  Also missing the top part of button for input 2 selector on back but this still works fine.  Both these things are purely cosmetic as its the top part and both still works fine as they should.