The Zamp Quattro uses a Swedish Class D amp, with a rugged build. It also has additional output filtering, low impedance loads, and is protected from short-circuited speaker wires.
Other features include automatic turn on options via a 12-volt and an ultra-sensitive audio trigger, as well as RCA line input jacks and speaker-level inputs to integrate with receivers lacking pre-amp outputs. Channels 3 and 4 can be connected with RCA jacks or to a bus from Zone 1. Level controls are rear-mounted and speaker outputs are 10 amp terminal blocks.
