DR-1325.4D

The Crunch DR-1325.4D is a four-channel Class D amplifier from the V-Drive series, rated at 1325W max power in a chassis just 6.85 inches long. It delivers 4 x 165W at 4 ohms, 4 x 330W at 2 ohms, and 2 x 660W bridged, enough to run front and rear speakers properly or to power a component front stage and bridge the rear pair to a subwoofer.

Size is the headline. Class D efficiency means less heat and less current draw, which is what lets this amp fit under a seat, behind a kick panel, or in the tight spaces modern vehicles leave. QTD aluminum heat sinking adds mass where it counts to keep operating temperatures down.

Fully adjustable 12dB high-pass and low-pass crossovers sweep 40Hz to 400Hz on each channel pair, so you can filter bass out of door speakers and send low frequencies to bridged channels from the same unit. Frequency response covers 20Hz to 20kHz with THD under 0.5% and signal to noise above 100dB. Input sensitivity adjusts from 0.2V to 6V to match factory or aftermarket sources.

The LED VU meter built into the logo is a working tool: switch it to VU mode and the lights track audio level while you set gain, then leave it on constant red or turn it off. Nickel-plated brass screw-down terminals take 4 AWG power and ground with 8 GA speaker wire, LED diagnostics report overload and short conditions, and external 60A fusing protects the install. Weight is 2.86 lb.