ARP Model 2310 Axe Synthesizer, featuring a keyboard layout in a compact design. Includes a voltage-controlled filter, low-frequency oscillator, envelope generator, and various sliders for tone and sound adjustments. Made in the USA by ARP Instruments Inc., Newton, Massachusetts. This unit measures approximately 23 1/2 inches high, 15 inches wide, and 6 inches deep. It turns on and lights up but has not been tested further. Constructed with wooden sides and control panel detailing.