Should I upgrade DAC, speaker cables, ICs, or PCs?

I agreed with Jdoris. DAC with USB is a preferable option. It will be better if DAC will have balance output. In general Balance outputs are less sensitive to cable quality even if the receiving end is RCA.
Alex

I never really liked my Nordost Blue Heaven, they were a bit closed in and did not flow with the music. I would consider shopping around a bit and try different cables (if you have not done so already).

fwiw I recently tried the White Lightning cables talked about here in a 6Moons review: http://www.6moons.com/audioreviews/whitelightning/moonshine.html

It is a very good speaker wire that I paid $7 for. I never thought DIY could be so good but it really is.

Or you could try the Audioquest mentioned by several on AA:
http://www.audioadvisor.com/prodinfo.asp?number=AQT4B

I am not trying to rock the boat and think the DAC ideas are the next thing I would do as well.

good luck

I think it's time to begin borrowing cables from the Cable Co. and begin tuning your system... actually, enabling & refining your system.

Wires do matter. They ain't much fun and they seem like such a non player, but WIRES DO MATTER.... A LOT. If you want to see what your components are truly capable of.

Especially power cords.

Putting something like a Voodoo Black Dragon, Tsunami, Mongoose, Airsine, etc., on the CDP, and perhaps a Taipan helix Alpha on the Mac amp, should allow for some sort of DAC to be added as well if indeed $1500 is on tap for disposal. Lavry, Apogee, BC, all should help.

It is time though to investigate the cabling in your system. Power cords are more a foundation principle IMHO. I try to begin there first as a rule of thumb when I add or swap out a device… my next step is to add – replace it’s PC.

Blue Heaven ICs aren't bad ICs... Very spacious sounding, but that's about it. Put a pr of Cardas Neutral Refs in there as your main ICs and you'll hear every change up or down stream... better. The NR cables are IMO cables everyone should have on hand somewhere if not in the system, then certainly available. They're the pretty much, 'next ' step up from the BH's. More natural, more refined top end, and better mids. Nicer looking too.

Personally I’d get rid of those speaker cables “toot suite”, but that’s just me… then make other moves, like PCs, ICs, &/or DACs.

I know you’re going to do as you want… everyone does and many have their minds made up going into posts like this. They’re usually just seeking validation or support for their own ideas.

Of course as things are a DAC is the one item that’ll turn your head now. It’ll make a very big difference, if you keep your CDP.

Cabling however, and especially power cords first will enable what you have to perform better, hence SOUND better.

But trust me on this.. owning $12K of components or more, and using $200 - $400 worth of cabling is doing yourself an injustice. Plain and simple. Notwithstanding, the camp against upscale wires. …and why I said to ‘borrow’ some first, or do the Agon shuffle and try out some of the more popular wires and resell them if not well pleased.

PCs for the front end, and amp, plus a DAC can be had for $1500. A set of Audio art speaker cables for instance might could be added in there too. Thereafter… your main IC is a key to your system.

You wouldn’t run a Viper on skinny recaps and regular gas now, would you? How is this scenario any different?

Obviously upgrading your front end will make the biggest impact on your system. Bad in = bad out no matter how you look at it. So the better source you can start with the better off you are.

Remove the noise from your system and there lies the music... there's no magic there. I'd look at the Mojo Audio DAC or the Zardoz ultimo Transport, both are two of the best DACs on the market and easily competitive with the Berkeley Alpha and Stahltek vekian for right around $1500. I currently use a Prism Sound Orpheus for my front end.

If you're looking for cables Mojo Audio makes the most neutral, noiseless cables on the market. Ben does a good job from the standpoint of understanding that music comes from removing the band-aids in your system and removing distortion and noise. He's a good guy also. Send me an email and I'll hook you up with Ben directly if you're interested.

Just to add fire to the conversation here...

Interconnects currently make zero difference on my system. They used to make a huge difference. Interesting how things happen.

I agree with upgrading the source first in terms of biggest bang for your buck from the remaining upgrade areas you mention. I view speaker cables, ICs, and PCs as the last thing to upgrade once you have your main system dialed in as best as you can get it. Many people use cables as tone controls to correct something else upstream in the signal chain. I would try to get the best and most synergistic components first and then try to get the best cables you can afford that will do the least amount of degradation to the sound. So go for source first. Many options here: 1) upgrade to another 1 box CD, 2) upgrade to a 1 box CD/SACD or even unversal player (if you care about SACD, DVD-A and Blu-ray), and 3) keep the Rotel 1072 CDP as transport and get a DAC (many of the aforementioned are excellent but be sure to get something with excellent jitter reduction). Option 3 allows you the flexibility of also adding a computer as a source. My 2c worth.