Crown D-75A

The Crown D-75A is a 2-channel stereo power amplifier delivering 75 W per channel into 4 ohms with distortion below 0.05% THD. Built for studio monitoring, small PA systems, and headphone amplification, it combines low-noise operation (>105 dB SNR) with precise frequency response across the audible spectrum. The unit features balanced and unbalanced inputs, binding post outputs, and per-channel gain controls, housed in a compact 2U rackmount chassis.

Technical Specifications

Power output: 75 W @ 4 ohms, 50 W @ 8 ohms per channel

Total harmonic distortion: 150 @ 1 kHz, 8 ohms

Input impedance: 10 kΩ unbalanced, 20 kΩ balanced

Input sensitivity: 1.0 Vrms for full rated power

Signal-to-noise ratio: >105 dB A-weighted

AC power: 120 VAC, 60 Hz

Typical power consumption: 200 W at full power

Dimensions: 3.5" H × 19" W × 9.5" D (2U rackmount)

Weight: 17 lbs (7.7 kg)

Key Features

Stereo operation with two independent channels

Front-panel rotary gain controls per channel

Power ON, Signal Present, and Clip/Distortion indicator LEDs

Convection cooling with internal heat sinks

1/4" TRS balanced/unbalanced inputs

Dual binding post outputs supporting banana plugs and bare wire

Black painted steel chassis

Typical Applications

Studio monitoring for near-field and midfield reference speakers

Small venue PA systems for background music or voice reinforcement

Professional studio headphone amplification

Multi-zone distributed audio installations

Compatibility & Integration The D-75A accepts both balanced and unbalanced audio sources through standard 1/4" TRS connectors. Output terminals accommodate banana plugs or bare wire connections to 4 or 8 ohm speaker loads. Input sensitivity of 1.0 Vrms enables integration with standard line-level audio equipment.