Ground Zero Iridium GZIA 135.4

Ground Zero Iridium GZIA 135.4 - 4-Channel Class-AB Amplifier with Variable Crossover

The Ground Zero Iridium GZIA 135.4 is a 4-channel power amplifier that cleanly drives your front/rear system or bundles two channels into a powerful subwoofer stage in bridged mode. The Class-AB architecture stands for dynamic sound, while the stable power supply and generously sized connections ensure reliable performance in everyday use. Practical for in-car use: high-level input with auto-on for problem-free connection to factory radios, bass boost, and a variable active crossover for precise tuning. The black anodized heatsink with Ground Zero lettering effectively dissipates heat. A remote control is included in the scope of delivery.

Technical Highlights

• 4-channel power amplifier based on Class-AB
• Variable active crossover and switchable bass boost
• High-level input with auto-on function – ideal for OEM radios
• Stable power supply and generous connection terminals
• Black anodized heatsink with Ground Zero branding
• Remote control included

Technical Data

• Version: High-Quality Class A/B amplifier
• Channels: 4
• Output power at 4 Ω: 4 × 100 W RMS
• Output power at 2 Ω: 4 × 140 W RMS
• Bridged output power at 4 Ω: 2 × 280 W RMS
• Frequency response: 8 Hz – 28 kHz
• High-level input / Auto-On
• Remote control: included
• Dimensions (W × L × H): 168 × 49 × 278 mm

Installation & Compatibility

The GZIA 135.4 fits into many setups: classically as a 4-channel for front and rear, actively with separate high/low pass per system path, or bridged as a 2-channel for more power on the subwoofer. Thanks to the high-level input, it can be operated directly with factory radios. The compact dimensions facilitate placement in the vehicle. If you need suitable accessories or advice, you can find support at Carhifi.shop.