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The Hifonics ZD-2550.1D is a Class D mono block amplifier built to drive demanding subwoofers, rated up to 2550 watts. It pairs a PWM MOSFET power supply with a Simpatico coil design and Ultra-Fi output devices to keep voltage steady and heat low. An onboard crossover adds a variable low-pass filter, subsonic filter and 0-12dB bass boost, plus DC signal-sense auto turn-on and LED diagnostics for overload and speaker shorts. It suits bass-focused builds that want big mono power and tuning control without stepping up to premium amp brands.
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Lowest price we've seen: $189.99 on Nov 12 at Hifonics. Tracked across 12 stores since Nov 12.
Owners of Hifonics Zeus Delta amps generally report strong subwoofer output for the class and praise the built-in crossover and bass boost. Complaints center on power demands and setup sensitivity rather than the amp itself.
The Hifonics ZEUS DELTA ZD-2550.1D is a Class D mono block amplifier built to drive car audio subwoofers. It delivers up to 2550 watts. Its PWM MOSFET power supply works with a Simpatico coil design that maintains constant voltage through Ultra-Fi output devices, with minimal heat generation.
An onboard electronic crossover has a variable low pass filter, a subsonic filter and 0-12dB bass boost for shaping low-frequency output. Nickel-plated RCA inputs and molded angled terminals accept 4 AWG power wire and 12 AWG speaker wire.
DC signal sense auto turn-on removes the need for a separate remote wire. LED diagnostic circuitry monitors overload and speaker shorts. An aluminum heat sink dissipates heat during sustained high-output operation.
