Ground Zero GZIA 135.4

Give your speaker system a powerful foundation with the Ground Zero GZIA 135.4. This Iridium Series Class A/B amplifier delivers 100 watts RMS per channel at 4 ohms or 140 watts RMS per channel at 2 ohms, making it a versatile choice for powering your front and rear speakers.

Adjustable high-pass and low-pass crossovers let you tailor the output to your speakers, while bass boost provides additional tuning flexibility. High-level inputs with automatic turn-on support integration with a factory head unit, so you can upgrade your amplification without necessarily replacing your radio.

A black anodized heatsink, stable power supply, and large connection terminals complete a clean, practical amplifier for your next car audio build.

Specifications: 4-channel Class A/B design; 4 × 100W RMS at 4Ω; 4 × 140W RMS at 2Ω; 2 × 280W RMS bridged at 4Ω; frequency response of 8 Hz–28 kHz; adjustable high-pass filter of 40 Hz–3 kHz; adjustable low-pass filter of 30–250 Hz; dimensions of 6.61″ W × 10.94″ L × 1.93″ H (168 × 278 × 49 mm).