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.
