Description
The ARC Audio Cu 4.2 is a two-channel Class A/B reference amplifier for high-output front-stage, midbass, specialty-driver, and bridged-mono applications. It is rated at 225 watts RMS per channel into 4 ohms, 350 watts RMS per channel into 2 ohms, or 700 watts RMS bridged into a 4-ohm load.
The Copper Series design incorporates ARC Audio's ULF (Ultra-Low Feedback) signal architecture and TTB (Thermal Tracking Bias) technology. A true front-end crossover-bypass switch removes the onboard signal-processing section from the signal path for direct operation from an external DSP. Microprocessor-controlled cooling helps maintain stable performance under changing thermal conditions.
Specifications
| Model | Cu 4.2 |
|---|---|
| Amplifier class | Class A/B |
| Channels | 2 |
| Published power at 4 ohms | 225 watts RMS × 2 |
| Published power at 2 ohms | 350 watts RMS × 2 |
| Published bridged power at 4 ohms | 700 watts RMS × 1 |
| Frequency response | 10 Hz–75 kHz |
| Crossover range | 55 Hz–5.5 kHz |
| Front-end crossover bypass | Yes |
| Built-in DSP | No |
| Dimensions | 11 × 8.65 × 2.65 inches |
Features
- Provides two channels of reference-grade Class A/B amplification.
- Can be bridged to deliver 700 watts RMS into a 4-ohm mono load.
- Uses ARC Audio's Ultra-Low Feedback signal architecture.
- Uses Thermal Tracking Bias technology to manage operating bias.
- Provides a front-end crossover bypass for externally processed systems.
- Features a brushed-copper and satin-silver chassis with gold-plated terminals.