Heinrich HPA1120 power amplifier
- 120W RMS power for PA & background music systems
- 100V/70V & 4–16Ω compatible for any speaker setup
- Balanced XLR & unbalanced jack input/output options
- 60Hz–15kHz frequency range for clear audio delivery
- >70dB S/N ratio for low-noise performance
- <0.1% THD for clean, distortion-free sound
- Auto cooling fan activates at 55°C for safe operation
- Overload, short-circuit & clip protection built-in
- 230V/110V AC support for universal use
- Heavy-duty 12kg metal chassis for professional installation
- Estimated Delivery : Up to 4 business days
- Free Shipping & Returns : On all orders over $200
The Heinrich HPA1120 Power Amplifier is a robust and reliable 120W professional PA amplifier designed for high-performance audio distribution across commercial and industrial spaces. Engineered with precision and built for long-lasting durability, this amplifier guarantees clear voice projection, stable background music playback, and distortion-free audio—even during extended usage. Ideal for schools, corporate offices, retail stores, hotels, hospitals, showrooms, warehouses, banquet halls, community religious places, and auditoriums, supports both 70V/100V PA line systems and low-impedance (4Ω/8Ω) speakers, making it suitable for a wide range of installation environments. Designed with advanced protection features, a high-quality Class-AB output stage, and professional-grade input/output flexibility, this amplifier ensures smooth integration with mixers, microphones, music players, and paging systems. With efficient thermal management and rugged construction, delivers consistent performance in demanding Indian conditions.
Specifications
| Model | HPA1120 |
| Rated Power Output | 120W |
| Speaker Output | 100V, 70V, 4–16Ω |
| Input | 10kΩ <1V, Unbalanced Mono Jack & Balanced XLR |
| Output | 10kΩ 0.775V (0dB), Unbalanced Jack & Balanced XLR |
| Frequency Response | 60Hz – 15kHz |
| S/N Ratio | >70dB |
| THD | <0.1% at 1kHz (1/3 rated power) |
| Cooling System | Auto fan (activates at 55°C) |
| Protection | Temperature, Overload, Short Circuit, Clip |
| Power Supply | AC 230V or 110V, 50–60Hz |
| Power Consumption | 162W |
| Dimensions | 848mm × 366mm × 88mm |
| Weight | 12kg |













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