This small completely analog stereo power amplifier shows everyone that size does not necessarily have anything to do with greatness.With a power amplification of 2 x 285 W (4 Ω) [2 x 185 W (8 Ω)] or 1 x 450 W (8 Ω, Bridge Mode), this amplifier easily controls any loudspeaker. Thanks to VOLTAiR technology, it is fast, precise and highly efficient with outstanding sound.Better safe than sorryThe Performer s800 has a protection circuit against DC voltage and against overheating. If direct current (DC) is detected, the output stage switches off automatically and the Protect LED lights up red.To protect the s800 against the unlikely event of overheating, a temperature sensor at the heatsinks continously monitors the temperature of the device. The TEMP LED lights up yellow when the Performer s800 is getting too hot.As a result of this the output stage is switched off and the fans run on high-speed until the device has cooled down.As one calls into the forest,so it echoes out.This saying inspired us to send the input signal out again in order to drive another power amplifier in bi-amping mode.Trim to fitWith reference to the Performer s800, “fit” means adapted.You can adapt the input sensitivity in 0.5 dB steps from 0 dB to -5.5 dB. In contrast to a panorama potentiometer in a preamplifier, this trim switch is the more audiophile solution.In addition, the difference in loudness of loudspeakers can be elegantly compensated in bi-amping mode.Power to the speakersThe loudspeaker binding posts can accommodate banana plugs as well as a stranded wire with a diameter of up to 4 mm.Thus, any common type of speaker cable and in bi-wiring mode even both connection types can be used together.However, we do not recommend connecting a speaker with less than 4 ohms impedance.BridgeYou can turn the two power amplifier channels into one power amplifier by connecting only the two plus pole terminals to the loudspeaker. This allows 450 W into 8 Ohm in mono operation mode.Trigger meThe standby mode of the power amplifier can be switched on and off using the AMP CTL connection between an SPL Professional Fidelity preamplifier, such as the Director Mk2.To do this, connect the 3.5 mm phone jacks to a cable with 3.5 mm mono or stereo phone plugs. It is not recommended to connect devices from third parties to the AMP CTL jack of the Performer s800.Sounds goodWith all devices of the Professional Fidelity series we develop not only according to plan, but also by ear. Many important components are installed on the circuit boards using Through-hole technology. This way we can ensure that we can use the best sounding components.