Revolutionary new diaphragm of only 1.35 micron thick. The Stax SR-404 Signature utilizes a new super thin diaphragm of only 1.35 micron in thickness. This unique diaphragm has only been made possible by a revolutionary new material with a molecular structure previously unavailable. The improvement in sound quality and retrieval of inner detail is simply stunning. The Stax SR-404 comes complete with a low capacitance wide format PC-OCC cable for connection to the SRM-006t Driver Unit. Type Electrostatic, Open Frequency Range 7~41,000Hz Capacitance 110pF (including cable) Impedance - Sensitivity - Max Sound Pressure Level 100dB/100V rms Standard bias voltage 580 VDC Cable 2.5m Wide format, Low Capacitance Weight including cable 472g, without cable 300g Total Weight in Retail box 1.1kg Standard Earpad Brown, artificial Leather, EP-234BR Compatible Earpads EP-234 series

Japan Made. Highest manufacturing standard Japan Warranty Supplied by Authorized Resellers in Japan. Japan Warranty 1 year on labor & parts from the day we sent your parcel. We can help you liaise with the Japan repair centre. You will pay for postages to/from our Japan office, and within Japan. Recommended Driver Units: SRM-600 Limited SRM-007tA Vacuum tube SRM-727A Full range SRM-006tA Vacuum tube SRM-323A Solid State