The Superb Sonoma Model One electrostatic headphone system, developed by Warwick Acoustics is available for evaluation at Purité Audio, London.
https://www.dropbox.com/s/lkbpnc4fdipxhxj/Warwick Acoustics UK Dealer Ad-HiFi+ Feb 2019.pdf?dl=0
Keith
https://www.dropbox.com/s/lkbpnc4fdipxhxj/Warwick Acoustics UK Dealer Ad-HiFi+ Feb 2019.pdf?dl=0
Keith