JL Audio J2 320.4 Features:

Description: Class B Four-Channel Full-Range Amplifier
Inputs: Two Stereo Pairs (RCA Low-Level or multi-pin High-Level) with 2/4 Channel Input Switch
On-board Crossover: 12dB/octave Butterworth with continuously variable low-pass cutoff frequency selection from 40-150 Hz and high-pass cutoff frequency selection from 60Hz - 1.2 kHz. Configurable as Low-Pass or High-Pass. Defeatable.
Preamp Output: Pass-through type with unity gain
Bass EQ: 0 - +12dB @ 45 Hz

JL Audio J2 320.4 Specifications:

Rated Power 14.4 V: 60W x 4 @ 4 ohm 80W x 4 @ 2 ohm
Rated Power 14.4 V Bridged : 160W x 2 @ 4 ohm
THD at Rated Power: 1% @ 4 ohms
Frequency Response: 10 Hz - 25 kHz +/- 0.5 dB
Input Range:
200mV - 4V (Low-Level)
2V - 10V (High-Level)
Dimensions (L x W x H):
15.40" x 9.60" x 2.15"
(391 mm x 244 mm x 55 mm)