Warwick Acoustics APERIO electrostatic headphone system

It seems as if it was just yesterday that I received a review sample of Warwick Acoustics’ Sonoma Model One (M1) electrostatic headphone system (£4,995, or $4,995 US). I reviewed the system favourably for Hi-Fi+, while my colleague Steven Stone praised it in our sister publication, The Absolute Sound. Steven’s and my comments closely paralleled one another; we both appreciated the Sonoma system for its accurate, natural, and uncoloured tonal balance, its uncommonly fast transient speeds, its overall subtlety and nuance, its wise-range frequency response, and for its versatility. Given how good the Sonoma M1 system was and is, the …