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JAFour 4-Channel Class-D Amplifier Clean Power, Versatile Control, Compact Form The JAFour delivers powerful, efficient Class-D performance in a compact chassis designed for versatility. With four channels of clean output, this amplifier is ideal for powering a full-range audio system or bridging channels to drive a subwoofer with increased output. Its flexible design supports both high-level (speaker wire) and low-level (RCA) inputs, making it easy to integrate into almost any setup. Precision tuning is at your fingertips with selectable high-pass, low-pass, and full-range crossover modes, adjustable from 50 Hz to 250 Hz. A variable bass boost centered at 45 Hz (0–6 dB) allows you to enhance low-frequency response to match your listening preferences. The amplifier’s clean signal path, featuring an 82 dBA signal-to-noise ratio and low distortion, ensures accurate and detailed sound reproduction. Built for reliability and performance, the JAFour is 2-ohm stable in stereo mode and bridgeable for higher output applications. Its variable gain control (300 mV–6 V) allows seamless matching with a wide range of source units, while recommended 8 AWG power/ground and 12 AWG speaker wiring ensure optimal current delivery. A compact footprint makes installation easy, even in tight spaces. Key Features: 125W x4 @ 4Ω, 215W x4 @ 2Ω, 445W x2 bridged @ 4Ω (1% THD+N) Up to 950W total dynamic power (10% THD+N) Selectable HPF/LPF/full-range crossover (50–250 Hz) Variable bass boost at 45 Hz (0–6 dB) 82 dBA signal-to-noise ratio and <0.12% THD+N High-level and RCA input compatibility 2-ohm stable stereo operation; bridgeable channels Variable gain range: 300 mV – 6 V Recommended wiring: 8 AWG power/ground, 12 AWG speaker wire Fuse rating: 30A x 2 Compact size: 1.99” x 6.53” x 9.13” (H x D x W) Specifications: Channels: 4 Amplifier Class: Class-D Digital CTA-2006-D Certified: Yes Frequency Response: 20 Hz – 20 kHz Crossover Range: 50 Hz – 250 Hz Signal-to-Noise Ratio: 82 dBA (1W reference) Total Dynamic Power: 950 Watts
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