Atom HE in excellent condition, Ser 49xx, very little use in a second study system, would say no more than 3-4 times a month for most of the last year. Due to a different type of use recently, I am taking down my second system to invest in my main one. The Atom HE is a very special piece of kit putting to shame headphone amps at several times the price, in my view improving on the ND5XS2, and with any half decent power amplifier sounding better than all of the all in one Naim boxes including the Nova. Once in a while every good company makes something that is of exceptional value and sound quality and the Atom HE is exactly that in the Naim line up. In all excellent condition, never any issues, any questions please ask. Comes fully boxed, with remote, powerline lite and all accessories. Collection welcome and really preferred if possible, otherwise will post recorded and fully insured. UK Only sale. Thanks.