The SRM-270S Driver Unit Is the Heart of the SRS-X1000, featuring: Enhanced Heat Dissipation: A 3mm-thick front aluminium panel and a larger aluminium extrusion case for effective heat management. aluminium case for effective heat management. High-Grade Connectivity: RCA pin jacks and a 3mm-thick front aluminium panel ensure a pristine connection. Low Noise FET: Selected for the First Stage amplifier, paired with a refined emitter follower circuit in the Output Stage for unparalleled clarity. Compact Chassis: Easy for placement, transportability and aesthetic appeal Flexible Installation: PARALLEL OUT terminals facilitate easy incorporation into your existing audio system, whether for music enjoyment or enhancing movie experiences at your desktop or bedside Specifications Frequency response: DC to 35,000Hz/+0, -3dB Harmonic distortion: 0.01% or less/1kHz 100V r.m.s. Amplification: 58dB (800 times) Maximum output voltage: 280V r.m.s./1kHz Input impedance: 25kΩ Input terminals: RCA x 1 Output terminal: Parallel out x 1 Bias voltage: 580V DC Power supply: AC adaptor included Power consumption: 12VDC/500mA External dimensions: 132(W)×38(H)×153(D)mm (excluding protruding parts) Weight: 540g