Performer s800 Stereo Power Amplifier Thanks to the VOLTAiR technology the Performer s800 needs far fewer components in the signal path than common power amplifiers. The preamplifier can directly drive the bipolar power amplifier transistors. Extremely fast, direct, highly efficient and with an extraordinary sound. The Performer power amplifier effortlessly controls the speakers with a power of up to 2x 285 W into 4 ohms out of an analog linear power supply with a toroidal transformer. In Bridge mode, the Performer s800 delivery 450 W into 4 and 8 ohms speakers.