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Crown

Crown Audio 280A 2-Input 80W Power Amplifier

$99.95

The Crown 280A is a reliable, high-value amplifier that provides all the necessary features in a simple, building-block format. With two inputs and dual 80W power amplifiers, it is an efficient and expandable choice for distributed audio systems. The unit's black and compact design is suitable for a variety of installations, including standard 19-inch equipment racks. The 280A can also be combined with other components from the Crown Commercial Audio Series, such as mixers, to create a more comprehensive audio system as a facility's needs grow. 

View Product Features

  • Dual 80W power amplifiers for two separate zones.
  • Flexible output options for 4-ohm, 70V, or 100V systems.
  • Balanced Phoenix-type inputs and screw-terminal speaker outputs.
  • Comprehensive protection system prevents against overheating and faults.
  • Ideal for commercial use, like paging and background music.
  • Expandable and easy to integrate into larger systems.
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About the Crown Audio 280A 2-Input 80W Power Amplifier

The Crown Audio 280A is a classic, professional two-channel power amplifier renowned for its robust construction, reliable performance, and high-quality sound reproduction. Designed during an era when Crown's "A" series set industry standards, it delivers 80 watts per channel into 8 ohms, with power doubling as impedance halves, providing substantial output for its class. Its engineering focuses on clean power delivery with minimal distortion, utilizing a straightforward analog design built on a massive heatsink and housed in a distinctive brushed aluminum front panel and steel chassis. The amplifier is known for its ability to drive demanding loads reliably, making it a trusted choice for installed sound, monitor duty, and smaller PA systems where durability and sonic integrity are paramount.

The front panel features minimalist controls, typically limited to a power switch and level potentiometers for each channel, reflecting a design philosophy where the amplifier is a transparent, set-and-forget component in the signal chain. Rear panel connections include both balanced XLR and 1/4" TRS inputs, as well as binding post and Speakon output connectors for flexible loudspeaker wiring. The amplifier incorporates robust protection circuitry against short circuits, overloads, thermal stress, and turn-on/off thumps, ensuring the safety of both the amplifier and connected speakers. Its convection cooling design allows for quiet operation, suitable for environments where fan noise would be intrusive.

While later generations offered more power and advanced features like DSP, the Crown 280A is celebrated for its bulletproof reliability and timeless sound quality. It represents an era of amplifier design where simplicity, over-engineering, and sonic transparency were the highest priorities. For many system integrators and audio professionals, the 280A remains a benchmark for a workhorse amplifier—a component that can be installed and expected to perform flawlessly for decades, providing clean, dependable power to critical loudspeakers in commercial, educational, and performance applications.

Key Features

  • Dual 80W power amplifiers for two separate zones.
  • Flexible output options for 4-ohm, 70V, or 100V systems.
  • Balanced Phoenix-type inputs and screw-terminal speaker outputs.
  • Comprehensive protection system prevents against overheating and faults.
  • Ideal for commercial use, like paging and background music.
  • Expandable and easy to integrate into larger systems.

Crown Audio 280A 2-Input 80W Power Amplifier Specs

Amplifier Performance
Rated Power (8Ω)
80 Watts per channel
Rated Power (4Ω)
160 Watts per channel
THD
<0.05%
Frequency Response
20 Hz - 20 kHz, +0/-0.5 dB
Slew Rate
High
Inputs & Outputs
Input Connectors
XLR & 1/4" TRS Balanced
Output Connectors
Binding Posts & Speakon (NL4)
Input Impedance
20 kΩ Balanced
Damping Factor
>500 at 8Ω
Protection & Operation
Protection
Short Circuit, Overload, Thermal, DC
Cooling
Convection (Fanless)
Controls
Level Pots, Power Switch
Indicator LEDs
Power, Signal, Clip
Physical & Electrical
Rack Units
2U
Dimensions
19" x 7" x 11.25" (approx)
Weight
Approx 35 lbs (15.9 kg)
Power Requirements
120V AC, 60 Hz
Current Draw
3.5A at 1/8 power, 8Ω

Key Features

  • Dual 80W power amplifiers for two separate zones.
  • Flexible output options for 4-ohm, 70V, or 100V systems.
  • Balanced Phoenix-type inputs and screw-terminal speaker outputs.
  • Comprehensive protection system prevents against overheating and faults.
  • Ideal for commercial use, like paging and background music.
  • Expandable and easy to integrate into larger systems.
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