Kenwood KAC-HQR1004 4-Channel High Quality Reference Amplifier

OVERVIEW.

The Kenwood KAC-HQR1004 is a 4-channel amplifier in the HQR (High Quality Reference) series designed to deliver clean, powerful sound for high-end speaker systems. It is rated at 100W RMS x 4 channels at 4 Ω and 130W RMS x 4 at 2 Ω, with the ability to be bridged to 270W RMS x 2 at 4 Ω, giving plenty of flexibility for powering front and rear speakers or a combination of speakers and subwoofers. Maximum output power is specified around 1200W. The amplifier includes variable high-pass and low-pass filters from 50 Hz to 200 Hz at a 12 dB/octave slope, enabling precise control over what frequencies reach each channel. A signal-to-noise ratio of about 100 dB helps ensure a clean background with minimal hiss, even at higher volumes. The HQR build quality features robust internal components and efficient thermal design so the amp can run hard while maintaining reliability, making it suitable for demanding reference-style car audio systems.

Technical Specifications

Channels

4

Max Power

1200W

Stability

2Ω stereo

Rms Power 2ohm

130W x 4

Rms Power 4ohm

100W x 4

Low Pass Filter

50–200 Hz, 12 dB/oct

High Pass Filter

50–200 Hz, 12 dB/oct

Frequency Response

20 Hz – 20 kHz

Signal To Noise Ratio

100 dB

Rms Power 4ohm Bridged

270W x 2