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.
Prakash G –
great value for money product. This power amp made my speakers come to life in my home theatre setup.
For the price this is a great buy.
Rajesh –
Great Amplifier. It has all the potential to give the branded entities, a run for their money.
I have brand new love for my system after using this
P C DAS –
It’s a giant killer. O&B should approach international reviewers for an unbiased review of this amp, which will help reach out to the international customers. Even Indian reviewers should be approached for this purpose and get other amps of international brand in the same price category compared, which will go a long way in establishing this brand in the international arena. After using it for a couple week I can say that this amp can stand up to the international competition.