Denon POA-2400A Stereo Power Amplifier — Optical Class-A, Japan

Denon POA-2400A Stereo Power Amplifier, maker-marked by Nippon Columbia Co., Ltd., Japan. A renowned model from Denon’s late-1980s “golden era” of hi-fi engineering, this amplifier features the brand’s proprietary Optical Class-A bias control system, designed to deliver the sonic purity of Class-A operation with the efficiency of Class-AB. Rated at 200 watts per channel into 8 ohms, it offers remarkably low distortion (0.002%) and a signal-to-noise ratio around 123 dB, ensuring detailed, dynamic, and distortion-free performance.

Built with precision and minimalist elegance, the unit features a brushed black aluminum faceplate, dual left/right input level controls, A/B speaker selection, and both Normal and Direct input paths for system flexibility. Rear terminals are clearly marked and robustly constructed, reflecting Denon’s commitment to professional-grade reliability. A highly regarded component among collectors and audiophiles for its warm tonal balance and authoritative power delivery.

Condition:

Good condition overall. Fully functional, tested, and fully operational. Minor surface scuffs consistent with normal use; no remarkable damage noted. All controls, inputs, and outputs perform properly. The finish remains clean with sharp, legible markings.

Dimensions:

Approx. 17.1 in (W) × 7.4 in (H) × 16.9 in (D)
Weight: 38.5 lbs

A standout example of late-1980s Japanese high-fidelity design, the POA-2400A combines refined analog engineering with Denon’s unique Optical Class-A innovation. Its blend of technical excellence and robust craftsmanship makes it a sought-after amplifier for both vintage collectors and high-end audio enthusiasts.