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O&B HCA500 Power Amplifier
The all-new O&B HCA500 Power Amplifier perfectly combines exceptional performance and streamlined simplicity, crafted to meet the demands of discerning audiophiles.
This amplifier is designed to deliver robust, high-quality performance, effortlessly driving any speaker system. A high damping factor and significant output current ensures a clean, balanced sound across all frequencies, even for the most demanding speaker setups.
Engineered with low-noise shielded toroidal transformers, the O&B HCA500 Power Amplifier minimizes interference and noise, resulting in pristine sound clarity. Its solid billet aluminium feet and neoprene shock absorbers eliminate unwanted vibrations, ensuring rock-solid stability and consistent performance on any surface.
For those who value power, precision, and durability, the O&B HCA500 Power Amplifier offers an unparalleled listening experience that redefines audio excellence.
Key Features of the O&B HCA500 Power Amplifier:
- Heavy steel chassis with an anodized aluminium faceplate.
- Comprehensive protection against excessive temperature shorted speaker connections, and ground faults.
- Robust power supply for consistent, reliable performance.
- Gold-plated RCA connectors for superior signal integrity.
- 5-way gold-plated speaker binding posts for secure and versatile connections.
- Gain selection for RCA input to optimize sound output.
- Input selection option between RCA and XLR for flexible connectivity.
- 12V trigger option for convenient integration with other audio equipment.
Experience the ultimate performance and precision with the O&B HCA500 Power Amplifier, where power meets sophistication!
Specifications of the O&B HCA500 Power Amplifier
| HCA500 – STEREO POWER AMPLIFIER SPECIFICATIONS | |
|---|---|
| Topology | Class-AB |
| Channels | 2 |
| RMS Output Power | |
| 4Ω SCD (Single Channel Driven) | 300W |
| 8Ω SCD | 180W |
| 4Ω BCD (Both Channel Driven) | 250W |
| 8Ω BCD | 155W |
| 2.8Ω BCD | 310W |
| Head-Room Output Power | |
| 4Ω BCD | 350W |
| 8Ω BCD | 175W |
| Peak Current Delivery | 46A (1Ω/1ms) |
| Frequency Response | 20Hz – 50kHz (±0.3dB) |
| Signal to Noise Ratio (RCA) | ≥ 114dBr (A-Wtg) ±1dB |
| THD+N (8Ω, 1kHz) | < 0.05% (-3dB) |
| Minimum Recommended Load Impedance (per channel) | 4Ω (can handle impedance up to 2.8Ω, which equals one 4Ω load or two paralleled 8Ω loads) |
| Damping Factor (8Ω load) | ≥ 500 |
| Input Sensitivity (for rated power; 4Ω load, RCA) | 1.055V / 0.755V (Switchable gain on RCA input, at back panel) |
| Input Sensitivity (for rated power; 4Ω load, XLR) | 1.55V |
| Gain (RCA) | 30/32.55 dB |
| Input Impedance | 33 KΩ |
| Input Connections | Unbalanced (RCA) & XLR (Selector switch at back panel) |
| Speaker Output Connections | Audiophile-grade 5-way binding posts |
| Power Requirements | 230 VAC @ 50 / 60 Hz |
| AC Power Switch | Blue LED ring switch (switches AC main power) |
| Trigger | 12V trigger for amplifier standby feature (connector provided at back panel) |
| Protection | HCA500 is protected against excessive operating temperature, shorted speaker connections, and ground faults |
| Dimensions | 17” wide x 4.2” high x 15” deep (not including connectors and feet) |
| Weight | 17Kg (unboxed) |
| Warranty | 3 years (The device will be serviced at the factory in Mumbai) |
DOs and DON’Ts for Amplifier Usage
DOs:
- Turn Off Before Cable Changes: Always turn off the amplifier before changing the speaker cables.
- Switch Settings When Off: Ensure Input (RCA or XLR), Gain, Source, HPF, and Ground Lift switches are toggled only when the amplifier is turned off.
- Prevent Unwanted Signals: Verify that no spurious signals or oscillations are injected into the amplifier’s input via preamplifiers, streamers, or other devices.
- Use Quality Cables: Always use high-quality RCA and XLR cables. As this is a high-power amplifier, any signal inconsistencies can be amplified, potentially causing damage.
- Monitor Input Levels: Keep the input signal level within the rated input sensitivity to avoid clipping, which can damage the amplifier and connected speakers.
- Stable Power Supply: Use a stable mains connection with a voltage range of 215-253VAC. Operating outside these limits can lead to malfunction.
DON’Ts:
- Avoid Low Impedance Loads: Do not drive the amplifier below its rated impedance of 4 ohms.
- Consult for Tube-Based Preamps: Avoid connecting the amplifier to a tube-based preamplifier without prior consultation.
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