I600 Amplifier:

Expands I600 speaker capacity by providing 80 Watts of power and accommodating 4 pairs of 8 ohm speakers per amplifier, with no maximum number of amps per system. Run the additional amps in series using the RCA “IN” & “OUT” connections. Comes in white, with a 2 year warranty.

Dimensions: 6 3/4″H  x 9 1/8″ W x 2 6/8″ Deep