The STAX SRM-270S is the newest earspeaker driver unit from the leader in electrostatic earpeakers and the easiest way for audiophiles to experience pure and immersive sound. Get the STAX SR-X1000 set and save on SRM-270S! Enhanced Heat Dissipation A 3mm-thick front aluminum panel and a larger aluminium extrusion case for effective heat management. High-Grade Connectivity RCA pin jacks and a 3mm-thick front aluminum 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. 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 Terminals: Parallel Out x 1● Bias voltage: 580V, DC● Power Supply: AC adaptor included● External Dimensions:132(W)×38(H)×153(D)mm (excluding protruding parts)● Weight: 540g