The world's first bank-switching, microprocessor-controller, ultracapacitor-based, ultra-low-noise external linear power supply. I bought this 3 months ago but have now upgraded to Uptones JS-2. This is a revelation in power supplies, it has the finesse and clarity of a good battery power supply but with huge bass power and depth.
Mint condition apart from 1 small ding (photo'd). Comes in original box and power supply.
https://uptoneaudio.com/products/ultracap-lps-1
£400 new by the time you pay taxes and shipping.
£300 posted.