Which Component Needs to be Upgraded First


I need your help. I am looking to upgrade a component in my system. My question is which of the components is the weakest link and should be the first to upgrade. source: Sony 333es SACD, Pre-Amp hand built by Veda Audio - Dyna Hi Kevin Gilmore design, B&K ST 140 amp, Talon Audio Khorous-X speakers (the speakers are not going to be considered for upgrading. Thanks for your wisdom.
gunting
Hey guys,my question is sort of on topic.Anyone had any experience with isolation transformers and their application at the source (CD/DAC)Comments,opinions?
I have used several BPT power conditioners on my digital front end only with good results. Deeper bass, took out some of what we call digital glare or hardness, smooth highs and improved stage size.

I now use a battery powered CD player so I sold my BPT.
Tvad, I have been reading the site info as well as posts on this unit and I am going to buy one for my house.

Two questions

Has it improved your sound in any way?

Seems this unit will clean ac and surge protect everything electronic in the home. My bedroom TV etc...........

Bill
My power seems clean with the EP-2050. I cannot say I had an "A-Ha!" moment after it was installed, but I'm comfortable knowing there's real science and engineering behind the product, and that it's protecting and filtering the power throughout my home.

Another user utilizes the EP-2450 Home Theater unit in addition to the EP-2050 and likes the results. I remember being told by Doug Joseph at Environmental Potentials that this was the next step if I wanted additional filtration at the system level.

I presently use an Alan Maher Reference Power Center V2 with the components, but frankly I do it more because the RPC V2 has eight outlets that I find useful. I could easily live without the additional filter unit.