Description
The Dynatech HD40F is a professional high-power stereo amplifier designed for DJs, live sound reinforcement, auditoriums, event venues, and touring applications. It features a heavy-duty toroidal transformer power supply, advanced protection circuitry, high damping factor, and front-to-rear cooling for reliable performance under demanding conditions. The amplifier delivers clean, powerful audio with low distortion and supports stereo, parallel, and bridge operating modes.
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Key Features
- High-power Class-H amplifier design
- Robust toroidal transformer power supply
- Stereo, Parallel, and Bridge mode operation
- Front-to-rear airflow cooling system
- Variable-speed cooling fans
- High damping factor for tight bass response
- Soft-start circuitry
- Clip limiter and peak current protection
- Short-circuit, overload, DC, VHF, and thermal protection
- Balanced XLR input and output connections
Technical Specifications
- Output Power @ 8Ω Stereo: 850 W × 2
- Output Power @ 4Ω Stereo: 1450 W × 2
- Output Power @ 2Ω Stereo: 2200 W × 2
- Output Power @ 8Ω Bridge: 2800 W
- Output Power @ 4Ω Bridge: 4400 W
- Frequency Response: 20 Hz – 20 kHz (+0/-0.5 dB)
- THD+N: < 0.02%
- Signal-to-Noise Ratio: > 80 dB
- Damping Factor: > 1300
- Slew Rate: > 20 V/μs
- Input Sensitivity: 0.775 V / 1.0 V / 1.4 V selectable
- Input Impedance: 20 kΩ Balanced / 10 kΩ Unbalanced
- Voltage Gain: 40.5 dB
