I've always been a strong advocate of proper power regulation contributing substantially to performance. The Teddy Pardo external power supply paired with my Naim UnitiServe is remarkable. I expected improvements, it surpassed all of that. The more authoritative bass, separation of instruments, widening of imaging and quickening of attack culminates in an overall transformation of my system.
I loaned it to a high-end shop for a couple of weeks and they concurred and ordered one themselves.
The UnitiServe stock is very decent, it just needed a little help. I hope this is informative to others. I've no connection with the company. I did read lots of discussion regarding Teddy Pardo PSUs before ordering the unit.
System: Naim UnitiServe, Naim DAC V1, Nordost Silver Shadow digital cable, Manley Jumbo Shrimp preamp, Mahi Mahi monoblocks, Decware ICs and speaker cables. Quadraspire Sunoko Vent stand, Analysis Plus Power Oval 2 PCs, Sound Organization stands, Merlin Black Magic monitors.