• Versatile 5/4/3/2 Channel Design – Easily power a full system, multi-speaker setup, or bridge channels for powerful subwoofer output, all from one amplifier.
• Dynamic Class D Efficiency – Enjoy clean, high-powered sound with advanced MOSFET circuitry and superior heat management for long-lasting performance.
• Precision Audio Control – Fine-tune your setup with adjustable HPF, LPF, bass boost (0–15dB), and phase control for perfectly balanced sound.
• Powerful and Compact Build – Delivers 900 watts RMS in a sleek aluminum chassis that fits tight installations without sacrificing performance.
• Reliable 4-Way Protection – Engineered with thermal, short circuit, DC, and overload protection for safe, consistent operation in any setup.

Cadence 900 Watt 2-Ohm Class D 5-Channel Car Audio Amplifier QR80.5

This Listing Includes:

• (1) Quartz Core QR80.5 5-Channel Class D Car Amplifier

The Quartz Resonance QR80.5 delivers power, flexibility, and precision in one compact amplifier. Designed for true audio enthusiasts, this 5/4/3/2 channel configuration gives you complete control to shape your ideal sound system. With 400 watts dedicated to your subwoofer channel and 80 watts per channel at 4 ohms, it balances depth, clarity, and punch. The QR80.5 embodies the perfect harmony of strength and refinement, offering studio-level sound in a sleek, compact body.

Specifications:

• Amplifier Type: Class D


• Channel Configuration: 5/4/3/2 Channels


• RMS Power @ 4 Ohms: 80 W x 4 + 400 W x 1


• RMS Power @ 2 Ohms: 125 W x 4 + 400 W x 1


• Frequency Response: 20 Hz - 36 kHz


• Input Sensitivity: 200 mV - 6 V


• Total Harmonic Distortion (T.H.D): < 0.05 %


• Signal-to-Noise Ratio: > 90 dB


• High-Pass Filter (HPF): 50 Hz - 250 Hz


• Low-Pass Filter (LPF): 50 Hz - 250 Hz


• Bass Boost: 0 - 15 dB


• Phase Control: 0 - 180


• Input Type: RCA


• Protection: Thermal, Short Circuit, DC Fault, Power Surge


• Construction: Silver-gray aluminum alloy heatsink


• Cooling System: Advanced MOSFET with efficient heat dissipation

Dimensions:

• Length: 13.94 in (354 mm)


• Width: 6.30 in (160 mm)


• Height: 2.05 in (52 mm)


• Weight: 9 lbs


• Shipping Dimensions: 17 x 11 x 5 in