SE800 PFFB High Power Class-D Amplifier

350W at 8Ω, and 700W at 4Ω - High Power Output Class-D Amplifier with PFFB implementation by SylphAudio.

All switching housekeeping supplies, which enables wide supply voltage range and very low idle power dissipation.

Can be used with a 2Ω load speaker if powered with a lower supply voltage around ± 60V DC and can reach 800W output (burst). Suitable for extreme subwoofer applications.

PFFB reduces load dependency and improves noise and distortion. Perfect for high power, full-range sound system applications.

PFFB can be disabled if a very high gain amplifier is required, and low THD+N is not a priority, especially for PA and subwoofer applications.

Optional clock and mute headers for multi-channel advanced projects.

Differential / Single-Ended input solder jumper setting under the board.

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Supply Voltage: dual ± 25V min, ± 85V DC max
Unclipped Power (<1% THD+N, ± 85V): 350W-8Ω, 700W-4Ω
Input configuration: Differential / Single Ended
Output configuration: Single Ended
Input sensitivity: 2.5V RMS
Voltage gain: ~26dB
PCB area: 140mm x 70mm
Overvoltage Protect: ±89V to ±91V DC
Undervoltage Protect: none, UVLO @ ±12V DC
Speaker Protect: none, requires external SP

Recommended Power Supply
±60V to ±85V DC, 1000W LLC switching, dual voltage output
Add a minimum of 2200uF per rail to avoid bus pumping. Rails should not exceed ±80V

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