HH Audio M-750D 2 x 750W Stereo Power Amplifier
Product Highlights
Product Highlights
HH Audio | Brand Bio & Collection Link
HH Audio | Brand Bio & Collection Link
HH Audio - Designed and Engineered with Head and Heart
HH audio products have been designed and engineered in the UK since 1968. Their PA loudspeakers, mixing consoles, and amplifiers are made to the highest specifications and are renowned for their performance and reliability by bands and sound engineers throughout the UK.
Take control over your live music soundscape with their excellent value-for-money analogue mixing consoles, with prices starting from only £149.
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FREE Delivery & Easy Returns Info
FREE Delivery & Easy Returns Info
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Why buy your HH Audio from us?
Why buy your HH Audio from us?
Description
Description
Professional 2 x 750W Stereo Power Amplifier With Class H Design, Toroidal Power Supply & Comprehensive Protection – HH M-750D.
The HH M-750D is a professional stereo power amplifier delivering 2 x 750W at 4 Ohms, designed for high-fidelity, high-power amplification across bars, clubs, houses of worship, live music venues and a wide range of professional audio applications. As the entry-level model in the HH M-Series range, it offers the same Class H high performance professional linear design, heavy duty low noise toroidal power supply and rugged construction as the more powerful M-1500D and M-2600D — making it an ideal choice for operators who require serious professional amplifier quality at a more accessible power rating. A standard 19" 2U rack-mount format and variable speed front-to-back forced air cooling system ensure straightforward installation and reliable thermal management during extended use.
Balanced XLR inputs with user-selectable input sensitivity (0.775V/1.4V) ensure compatibility with a wide range of professional source equipment, and locking SpeakON connectors alongside 4mm binding posts with safety covers provide secure and versatile speaker connectivity. Balanced XLR link outputs allow straightforward daisy-chaining to additional amplifiers, and a bridged output of 1500W at 8 Ohms provides useful additional flexibility for mono applications. Comprehensive protection circuits cover soft start, VHF, RF, short circuit, overload, clip limiting and overheat, and a damping factor of greater than 200 and slew rate of 20V/µS reflect the M-750D's professional pedigree throughout.
Class H Design & Toroidal Power Supply
The M-750D employs a Class H high performance professional linear amplifier design, which improves efficiency over conventional Class AB designs by dynamically scaling the supply voltage to track the audio signal — delivering high output power with reduced heat generation and improved reliability over extended use. The heavy duty low noise toroidal power supply provides a clean and stable power foundation, minimising mains-borne interference and contributing to the amplifier's outstanding signal-to-noise ratio of 100dB or greater. These are the same core technologies found across the entire M-Series range, ensuring consistent professional quality regardless of model.
Comprehensive Input & Output Connectivity
Balanced XLR inputs with user-selectable sensitivity of 0.775V or 1.4V accommodate a wide range of professional mixers and source equipment, with an input impedance of 20kΩ balanced and 10kΩ unbalanced. Speaker outputs are provided via two locking SpeakON connectors and four 4mm binding posts with safety covers, while balanced XLR link outputs enable convenient signal routing to additional amplifiers in multi-amplifier setups. Bridge mode delivers a combined mono output of 1500W at 8 Ohms, adding further versatility for mono subwoofer or single-channel applications.
Rugged Construction & Comprehensive Protection
Built to the same professional standards as the rest of the M-Series range, the M-750D features a comprehensive suite of protection circuits covering soft start, VHF and RF interference, short circuit, overload, clip limiting and overheat — ensuring the amplifier and connected speaker systems are protected at all times. A variable speed forced air cooling system with front-to-back airflow maintains safe operating temperatures during sustained operation, and per-channel volume controls alongside a bridge/routing mode switch provide straightforward and flexible system control.
KEY FEATURES: HH Audio M-750D 2 x 750W Stereo Power Amplifier
- Professional Stereo Power Amplifier: Class H linear design delivering 2 x 750W @ 4 Ohms, 2 x 500W @ 8 Ohms or 1500W bridged @ 8 Ohms.
- Toroidal Power Supply: Heavy duty low noise toroidal design for a clean, stable power foundation and minimal interference.
- Balanced XLR Inputs: User-selectable input sensitivity (0.775V/1.4V) for compatibility with a wide range of professional source equipment.
- Locking SpeakON Outputs: Two locking SpeakON connectors for secure speaker connectivity alongside four 4mm binding posts with safety covers.
- Balanced XLR Link Outputs: For convenient signal daisy-chaining to additional amplifiers.
- Comprehensive Protection: Soft start, VHF, RF, short circuit, overload, clip limit and overheat protection circuits.
- Variable Speed Fan Cooling: Front-to-back forced air cooling for efficient and reliable thermal management.
- High S/N Ratio & Low Distortion: S/N ≥100dB; THD+N ≤0.5% across 20Hz–20kHz.
- 19" Rack Mountable: Standard 2U format for secure installation in any professional rack setup.
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HH Heritage: Over 50 years of professional power amplifier design experience.
Specification
Specification
What's in the box?
What's in the box?
Downloads & Manuals
Downloads & Manuals
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