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Details about the Infinity REF-551a
mono subwoofer amplifier370 watts RMS x 1 at 4 ohms (550 watts RMS x 1 at 2 ohms)
Class D amp technology
variable low-pass filter (32-320 Hz, 12 dB/octave)
variable bass boost (0-9 dB at 45 Hz)
phase switch (0, 180 degrees)
preamp and speaker-level inputs
wiring and hardware not included with amplifier8-gauge power and ground leads recommended
fuse rating: 30A x 2
dimensions: 9-3/8"W x 2-1/4"H x 7-5/16"D
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