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Crown Studio Reference II Amplifier - $2,200
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Why the Studio Reference Series Stands Out
Crown engineered these amps with several advanced technologies that set them apart from typical professional amplifiers of the era:
Grounded Bridge™ output topology — Delivers large voltage swings with lower stress on output devices, resulting in lower distortion and greater reliability than conventional designs.
Variable Impedance (VZ) power supplies — Independent supplies for each channel that intelligently switch configuration for optimal efficiency and performance.
Ultra-high damping factor (>20,000 from 10–200 Hz) — Exceptional loudspeaker control, especially in the low end, for tight, authoritative bass.
Extremely low distortion and noise: THD typically under 0.02%, intermodulation distortion under 0.005%, and signal-to-noise better than 117 dB (A-weighted).
IOC (Input/Output Comparator) and ODEP (Output Device Emulation Protection) systems for real-time monitoring and protection without unnecessary shutdowns.
The result is an amplifier that sounds open, detailed, and neutral — with excellent dynamics and a natural sense of space. Many users describe it as warm enough to remain musical while remaining highly accurate for mixing and mastering decisions.
Power Ratings (approximate, depending on measurement conditions)
Stereo (both channels driven): 360 W into 8 Ω / 565 W into 4 Ω (1 kHz)
Bridge-Mono: Approximately 1,145 W into 8 Ω
Also supports Parallel-Mono mode for high-current applications
Frequency response is essentially ruler-flat (±0.1 dB, 20 Hz–20 kHz at 1 W). The amp is safe into reactive loads and rated for 4–8 Ω in stereo (with appropriate ratings in mono modes).
Features & Connectivity
Stereo / Bridge-Mono / Parallel-Mono switching
Front-panel level controls, signal, IOC, ODEP, and power indicators
Input sensitivity selectable (0.775 V, 1.4 V, or 26 dB gain)
Balanced XLR and ¼″ inputs (via standard PIP module)
Binding post outputs
Ground lift switch
PIP (Programmable Input Processor) expansion capability
Rackmount chassis: 19″ wide × 7″ high × ~16″ deep behind the face
Weight: approximately 56 lbs
This is a serious piece of studio hardware that still competes sonically with much more modern (and expensive) amplifiers when used for critical monitoring. Ideal for high-end nearfield or midfield monitoring systems, or for anyone seeking a powerful, transparent, and highly refined solid-state amp with legendary Crown build quality.
In perfect working condition. The amplifier is recently used in an operating studio and is solid and fully functional.
Price negotiable if picking up. Will consider trades. Will consider shipping also under specific conditions.