
The biggest development has been to move the sources from between the speakers and to the side of the room. Why? More later ...
At the moment I have the Infinity RS 4001s connected using some sort of basic Monster Cable speaker wire. I have a pair of UK-sourced Quad 11L2s to use instead, but I'm thinking that they'll do better with rather better speaker wire, supports and a sympathetic sub-woofer. I have access to an Infinity sub, but it's more suited to home theatre with no subtlety when used with music.
Back in the UK I built this sub from IPL Acoustics who happened to be a guy working from a house in Ilfracombe, Devon, UK.
The Quads also need something like the Atacama Nexus speaker stands to keep them off the ground.

Pro-Ject Cherry Classic Turntable : This was adapted for the US by fitting a 110v/60Hz motor and pulley. This wasn't too difficult. The UK suppliers, Henley Designs, were very helpful, as was The Needle Doctor, who supplied the pulley and a special tool for adjusting the arm bearings.
Currently, the deck uses an Ortofon 510 MkII with an Ortofon 2M Red waiting to be installed.
Pro-Ject USBII Phono Box : I use this to step-up the turntable output to line-voltage and also act as a AD converter which I am experimenting with to digitise my LP collection ... that's for another day.
Cambridge DacMagic : This time, a DA converter. I am using this to by-pass the DA converter in my CD player and take direct output from digital audio files on my home network and output - hopefully - hifi quality sound.

Marantz CD5001 CD Player : I'm using the DacMagic to bypass the player's DA converter. So far, so good ...
Marantz PM5003 Integrated Amplifier : So far this has helped to integrate the distinctly non-standard setup I have here.
Little Dot Headphone Amplifier : on the shelf under the CD player - currently not linked in, but will be tapped off one of the PM5003's recording monitors.
Nearly all this stuff is 220/240v. I use a 3kw/110v/220v converter. Running at 220v/60Hz doesn't appear to be an issue for any item of equipment so far.

Anyway, so far, a good investment, certainly far more than $45.00 worth of audio improvement, plus, you receive updates via email once you've bought it.