High-Power DC power supply upgrade for NAIM amp?

The external power supplies make a very big difference with Naim equipment.  No need to buy it immediately. Try the amp without it and listen for a while and then try it. I found the difference quite transformative with preamps and CD players. 

The NAIM HICAP DR power supply product is no longer available.

The TEDDY PARDO power supplies were designed to replace the Naim FlatCap, HiCap, SuperCap, and XPS power supplies in Naim Audio systems. They provide advantages over the original products at fraction of the cost, they provide cleaner DC resulting in better sound quality, they don’t hum, they are smaller in size, and do not require recapping every 10 years.

The TeddyCap Special Edition (SE) – Replaces one HiCap DR. The TeddyCap SE is a high-end power supply, dedicated to Naim’s integrated amplifiers, mainly SuperNait 1..3 and Nait XS 1..3. I also agree with @chayro comments above (amp first and then decide about the power supply).

Teddy CAP SE Power Supply Link

I emailed NAIM Customer Support asking about their power supply recommendations.

By far the best LPS Dc power supply. By far the best under $1200 

you can buy for $50: off on Audiogon Linear Tube Audio give them a call 

and great quality DC cable , put a decent power cord 

the Pangea awg 14  sig mk2 for $200 perfect complement

and better then the Naim power supply with ease !!

I've yet to find the amplifier, source, or processor that could not benefit from a higher-current, lower impedance, lower-noise power supply.