Where is the weak chain in my system?

Update on what I did so far:

I talked to my main dealer and got a bunch of accessories and cables to try based on all your suggestions:

1. Symposium Svelt Plate for Speaker: This made the most difference! for me. It was immediately noticeable with more air and better bass, almost like upgrading a new amp or speaker...

2. Harmonic Tech Pro 9 Speaker cables: Maybe a little better but did not notice much difference from Cardas Crosslink I have. I will try Magic and Higher end cables.

3. Perpetual P1A upsampler: Again maybe a little difference, but not much. My friends seemed to prefer the upsampled signal though. I will try Purcell from my dealer.

4. Symposium Rollerblocks/Coupler: Not yet tried.

So, I will keep the Svelt speaker plate and the cables and perpetual goes. I will actually try using the Svelt plate and roller blocks for all my gears and see if they have the same large effect.

Also, will try with power conditioners.

Please keep the ideas and suggestions coming. Thanks

CJPark

Thanks everyone for the input so far. Looks like the cables are the place to start, which I agree since I have been trying some more expensive cables and decided to hold the decision until I find the right one. I tried Transparent Ultra and Cardas Quadlink but they did not make enough difference. I will also upgrade power cords.

As for the preamp, I actually sold my ARC LS-25 MK2?3 (latest model) to upgrade my DAC to Goldmund which I really notice the difference with all other DACs including ML 360S in how sweet, rich and more powerful it was. It had digital volume control and since Goldmund recommended that I go direct, I thought I could get rid of preamp and invest elsewhere. As for analogue, it is an entirely new hobby I think and I am definitely resisting to go there at least until I finish the digital jounrney. BTW, I spent a year building my HT and stopped hardware buying/changing and just watching movies. I am into audio for 6 months only...

I welcom more inputs