Revolutionary new diaphragm of only 1.35 micron in thickness 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 back/Push-pull driving Frequency Range : 7-41,000Hz Capacitance, including cable : 110pF Sound Pressure Level : 100dB/100V r.m.s. Cable : Wide format Low Capacitance PC-OCC Conductor Earpad : High quality artificial Leather Weight : including cable 472g, without cable 300g Color : Brown Operation Temperature : 0-35 Degree   Recommended Driver Units: SRM-007tA Vacuum tube SRM-727A Full range SRM-006tA Vacuum tube SRM-323A Solid State

Japan Made. Highest manufacturing standard Japan Warranty Supplied by Authorized Resellers in Japan with standard manufacturer's warranty. Manufacturer's Japan Warranty 1 year labor/parts from the day you receive. We can help you liaise with the Japan repair centre. You will pay for postage to/from our Japan office.