Description
ATI 51+ Professional Power Amplifier
Unmatched Power. Exceptional Performance.
The ATI 51+ is a high-performance Class H professional power amplifier engineered for demanding live sound, DJ, touring, rental, and installation applications. Designed to deliver powerful output with outstanding efficiency, stability, and audio clarity, the ATI 51+ ensures reliable performance even under continuous heavy-duty operation.
Featuring advanced protection circuitry, an ultra-high damping factor, and low distortion performance, the ATI 51+ provides deep bass response, accurate sound reproduction, and superior control over connected speaker systems.
Key Features
- High-efficiency Class H amplifier design
- Powerful stereo and bridge mode operation
- Ultra-high damping factor for precise speaker control
- Wide frequency response for crystal-clear audio reproduction
- Multiple input sensitivity selections
- Professional XLR balanced inputs
- Advanced protection system for maximum reliability
- Low distortion and high signal-to-noise ratio
- Ideal for concerts, DJ systems, clubs, auditoriums, and rental applications
Output Power
| Mode | Power Output |
|---|---|
| 8Ω Stereo | 2 × 2200W |
| 4Ω Stereo | 2 × 4400W |
| 8Ω Bridge | 4400W |
| 4Ω Bridge | 8800W |
Technical Specifications
| Specification | Details |
| Output Circuit | Class H |
| Frequency Response | 20Hz – 20kHz (±0.1dB) |
| Signal-to-Noise Ratio | 80dB |
| THD+N (8Ω, 1kHz, 1/4 Output) | < 0.05% |
| Damping Factor (8Ω, 1kHz) | > 2000 |
| Slew Rate | > 20V/µs |
| Input Sensitivity | 0.775V / 1.0V / 1.4V |
| Input Connectors | 3-Pin XLR, Electronically Balanced |
| Link Connectors | 3-Pin Male XLR |
| Input Impedance | 20kΩ Balanced / 10kΩ Unbalanced |
| Output Connectors | XLR |
| Protection System | Short Circuit, Open Circuit, Overload, Overheat, DC Protection, Supersonic Frequency Protection |
Designed for Professional Applications
The ATI 51+ is built to meet the demands of professional audio environments where power, durability, and sound quality are critical. Whether powering large-format speakers, subwoofers, or full-range systems, it delivers exceptional performance with consistent reliability.
Perfect For:
- Live Sound Reinforcement
- DJ Sound Systems
- Rental Companies
- Concert Events
- Clubs & Lounges
- Auditoriums
- Houses of Worship
- Touring Applications














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