O&B HCA300 Power Amplifier
The all-new O&B HCA300 Power Amplifier is the ideal combination of exceptional performance and user-friendly design, making it a top choice for discerning audiophiles.
Built to deliver powerful and high-fidelity sound, the HCA300 Power Amplifier effortlessly drives even the most demanding speakers. Its high damping factor and substantial output current ensure a precise, balanced audio experience across the entire frequency range.
With low-noise shielded toroidal transformers, the HCA300 Power Amplifier minimises interference and background noise, offering crystal-clear sound quality. Its durable billet aluminum feet and neoprene shock absorbers eliminate vibrations, ensuring stable and reliable performance on any surface.
The O&B HCA300 Power Amplifier delivers a truly remarkable listening experience for those seeking unmatched power, precision, and reliability.
Key Features of the O&B HCA300 Power Amplifier:
- Heavy steel chassis with a sleek anodized aluminium faceplate.
- Comprehensive protection against excessive temperature, shorted speaker connections, and ground faults.
- Robust power supply for consistent, high-quality output.
- Gold-plated RCA connectors for optimal signal transmission.
- 5-way gold-plated speaker binding posts for secure and versatile connectivity.
- Gain selection for RCA input, allowing for customizable sound output.
Unleash the full potential of your audio system with the O&B HCA300 Power Amplifier
| HCA300 – STEREO POWER AMPLIFIER SPECIFICATIONS | |
|---|---|
| Topology | Class-AB |
| Channels | 2 |
| RMS Output Power | |
| 4Ω SCD (Single Channel Driven) | 160W |
| 8Ω SCD | 130W |
| 4Ω BCD (Both Channel Driven) | 150W |
| 8Ω BCD | 100W |
| Head-Room Output Power | |
| 4Ω BCD | 210W |
| 8Ω BCD | 150W |
| Peak Current Delivery | 35A (1Ω/1ms) |
| Frequency Response | 20Hz – 50kHz (±0.3dB) |
| Signal to Noise Ratio | ≥ 114dBr (A-Wtg) ±1dB |
| THD+N (8Ω, 1kHz) | < 0.05% (-3dB) |
| Minimum Recommended Load Impedance (per channel) | 4Ω (which equals one 4Ω load or two paralleled 8Ω loads) |
| Damping Factor (8Ω load) | ≥ 250 |
| Input Sensitivity (for rated power; 8Ω load) | 1.055V/0.5 (Switchable gain only on Unbalanced source input, switch at back panel) |
| Gain | 28/34 dB |
| Input Impedance | 33 KΩ |
| Input Connections | Unbalanced (RCA) |
| Speaker Output Connections | Audiophile grade 5-way binding posts |
| Power Requirements | 230 VAC @ 50 / 60 Hz |
| AC Power Switch | Rocker switch (switches AC main power) |
| Protection | HCA300 is protected against excessive operating temperature, shorted speaker connections, and ground faults |
| Dimensions | 12” wide x 4.2” high x 14” deep (not including connectors and feet) |
| Weight | 13Kg (unboxed) |
| Warranty | 3 years (*) The device will be serviced at the factory in Mumbai |
DOs and DON’Ts for Using the Amplifier
DOs:
- Turn Off Before Changing Cables: Always turn off the amplifier before changing the speaker cables.
- Switch Settings Carefully: Toggle Input (RCA or XLR), Gain, Source, HPF, and Ground Lift switches only when the amplifier is turned off.
- Prevent Spurious Signals: Ensure no spurious signals or oscillations are injected into the amplifier’s input from preamplifiers, streamers, or other devices.
- Use Quality Cables: Always use high-quality RCA and XLR cables. As this is a high-power amplifier, any inconsistency in signal levels will be amplified and could cause damage.
- Maintain Stable Input Levels: Ensure that the input signal level does not exceed the rated input sensitivity to avoid clipping, which may damage the speakers and amplifier.
- Stable Power Supply: Use the amplifier with a stable main connection between 215–253VAC. Operating the device outside this range may result in malfunction.
DON’Ts:
- Avoid Low Impedance: Do not drive the amplifier below the rated impedance of 4 ohms.
- Consult Before Connecting Tube Preamps: Do not connect the amplifier to tube-based preamps without consulting the manufacturer.
Following these guidelines will ensure optimal performance and protect the amplifier and connected equipment from damage.
Phani –
Using 3 chanel power amplifier of O&B. Built like a tank. Awesome. Happy for my purchase.
Akash –
Great Amplifier for compact space and bookshelf speakers. True to specs
Satheesh Gopi –
Great audiophile amplifier. In par with or better than international brands like NAD, Creek, Marantz. I am 100percent satisfied. The finish and the components used are of international standards. Great quality, good built, good performance. It has a clean and nice look and the amp is heavybuilt..