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The Acurus A125x5 is a five-channel Class AB power amplifier designed for both high-quality music and home theater systems. It is rated at 125 watts per channel into 8 ohms with all five channels driven, over a 20 Hz-20 kHz bandwidth with total harmonic distortion (THD) of 0.06% and an A-weighted signal-to-noise ratio of 110 dB. Each channel can deliver higher output into lower impedances, with published data indicating approximately 175-200 watts per channel into 4 ohms depending on the specific documentation revision. The amplifier uses separate two-channel and three-channel sections within one chassis, with the stereo section fitted with additional heatsink cooling to provide substantially higher continuous power capability (often cited at over 150 watts per channel) for the main left/right speakers in demanding home theater setups. Core input specifications include 1.1 V input sensitivity for full output and 20 kΩ input impedance. The chassis is made in the USA by Mondial Designs under the Acurus brand, weighing 42 lb and measuring 17" (W) x 6.75" (H) x 14" (D). Sonically, retailer and user reports consistently characterize the A125x5 as clean, stable, and capable of driving low-impedance, high-demand speaker loads, with tight bass, clear midrange, and extended treble; subjective comments often note a slightly forward or bright presentation but not harsh when properly matched with speakers. The model is a legacy Mondial/Acurus multichannel design and is no longer in current production, now commonly available only on the used market through audio retailers and resellers.
Amplification power output and characteristics
Analog signal output specifications
Input and output connections
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The A200x3's power @ 8ω is 200W against the A125x5's 125W. Both share signal-to-noise (110 dB), thd (0.060%), and input sensitivity (1.1V RMS).
The PVA-7's power @ 8ω is 105W against the A125x5's 125W, its signal-to-noise 122 dB against 110 dB, and its thd 0.030% against 0.060%. Both share class (AB).
The A200x5's power @ 8ω is 200W against the A125x5's 125W, its signal-to-noise 106 dB against 110 dB, and its thd 0.030% against 0.060%. Both share class (AB).
The XPA-3 Gen3's power @ 8ω is 300W against the A125x5's 125W, its signal-to-noise 117 dB against 110 dB, and its thd 0.005% against 0.060%. Both share class (AB).
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