SPL - Performer s900 Right in the center – with big sound! The SPL Performer s900 stereo power amplifier marks the middle of the line and is based on the big SPL Performer s1200 stereo power amp in terms of the selection of components and conceptual design. This is where sonic greatness meets performance specs that perfectlymatch high-resolution but not overly power-hungry speakers of any size.With an amplifier output of 2 x 370 W (4 Ω) [2 x 420 W (2 Ω); 2 x 200 W (8 Ω)],it truly has enough reserves to powerfully drive any loudspeaker. The Performer s900 stereo power amplifier is a compact size powerhouse. It excels in exceptional headroom thanks to the SPL VOLTAiR technology and impresses with a detail-rich, vivid, honest and musically outstanding sound. Conventional solid-state power amplifiers tend to operate in a critical range of the built-in components – this results in unpleasant harmonical artifacts. Tube power amplifiers also distort at their limit but their characteristical behaviour softens this roughness and harshness. Non the less this is a falsified representation of the sound image. Thanks to VOLTAiR Technology, the Performer s900 can process much higher levels without even coming near to a critical range. All components constantly operate in the optimal range. The result is a very pleasant, natural and relaxed sound experience. Enjoy your music in every detail and without any listening fatigue. Specifications Analog Inputs: XLR (balanced), RCA (unbalanced) Input impedance 20 kΩ Input trimming 0 dB to -5.5 dB in 0.5 dB steps Input sensitivity 8 dBu Loudspeaker Outputs: Binding posts with 4 mm ø cable hole (screwable) and banana plug Output power (RMS, 2 Ω) 2 x 420 W Harmonic distortion (1 kHz, 2 Ω) < 0.07 % Output power (RMS, 4 Ω) 2 x 370 W Harmonic distortion (1 kHz, 4 Ω) < 0.06 % Output power (RMS, 8 Ω) 2 x 200 W Harmonic distortion (1 kHz, 8 Ω) < 0.04 % Output voltage (Peak-to-Peak) 112 V Output voltage (RMS) 40.2 V Output impedance (20 Hz – 20 kHz) < 0.035 Ω Frequency range (-3dB) 10 Hz – 80 kHz Amplification gain 26 dB Damping factor (1 kHz, 8 Ω) > 280 Noise (A-weighted) -123 dB