ZD-1350.4D [Used]

The Hifonics ZD-1350.4D is a ZEUS DELTA four channel amplifier rated at 1350W max power. It puts out 4 x 170W into 4 ohms, 4 x 335W into 2 ohms, and bridges to 2 x 675W into 4 ohms, so one chassis can run a full set of front and rear speakers, a front stage plus a bridged subwoofer, or a pair of high-power components.

Response runs 10Hz to 22kHz with THD under 0.5%, and variable high-pass and low-pass crossovers each sweep 50Hz to 250Hz at 12dB per octave. That lets you high-pass door speakers so they stop trying to reproduce bass they cannot handle, then low-pass a bridged channel pair feeding a sub. Built-in bass control and 0.2V to 6V input sensitivity handle level matching with factory or aftermarket head units, and speaker-level inputs allow a tie-in without a separate adapter.

A PWM MOSFET power supply with the dual coil Simpatico design keeps voltage constant under load, and Class-D topology with an aluminum heat sink keeps the chassis at 11.65 x 5.75 x 2.16 in and 5.07 lb, so it fits under a seat or in a side panel.

Angled molded terminals take 4 AWG power and ground and 12 AWG speaker wire, keeping the wiring profile clean in tight mounting spots. Nickel-plated RCA inputs resist corrosion, end-panel LEDs report overload and speaker short conditions, and DC Signal Sense starts the amplifier on RCA signal so a remote turn-on wire is optional. External 60A fusing required.