I bought these last year from 'Analogue Kid' on this forum and although they are the finest headphones I've ever had I can't justify keeping them as I listen so rarely now on them - I bought as youngest child in house was often woken by music (!!) but she now sleeps through. They are unusual in design as they 'rest' on your head with the 'phones held a little away from the ears by foam pads behind the ears- is much less tiring than conventional fit and take output from the loudspeaker terminals on your amp via their own switching box. Sound? - great, fast transients, realistic bass and a 'to die for' mid-range. I've had other headphones (previously Grado RS1s) but they don't come close. Reviews /Info: '' ........Sonically quite exceptional , for my money these are the best'' -HI FI CHOICE MAGAZINE - UK ''Recognised by the demanding music enthusiast as the reference'' -ALTA FEDELTA MAGAZINE - ITALY link for pics - Stone Audio - UK dealer says: Incredible bass, super fast transients and fatigue free! The Ergo AMT employs a completely new drive unit, the Air Motion Transformer. The most remarkable feature of the AMT is it's fast reaction to impulses, ensuring correct phase and excellent dynamics. It is possible to detect details in music that simply cannot be reproduced by other speakers. The Ergo AMT is supplied with its own switching box for direct connection to the LS output of your amplifier. This is the ultimate in personal listening and an absolute must for serious headphone users. We guarantee the AMT will provide a listening experience unsurpassed by any other headphone on the market. New cost £599 - serious offers please - looking for around £275 [URL]http://www.stoneaudio.co.uk/default.asp?redirect=http://www.stoneaudio.co.uk/stoneaudio/products/details.asp?product=35[/URL]