Recommendation for Improvement over McCormack DNA-225

Dwolek;

Your fighting the same thing I've been working on; Harshness in highs

I've done a bunch that helped: incrementally
Here is some of my travails!

A couple questions:
1) what sources are you listening to?
     Cd's? Or Ripped ones?
     I've found a lot of CD' s just plain nasty
     Try Tidal and compare?    Big difference in quality of recordings; especially 80-90's stuff
   (really eye opening).
2) cables DO make a good difference in the highs/hash.  ( I always though it was Hooey) Higher level ones were really noticeable
3) just converted from class d amp to pass labs xa series;  big change but crappy source still comes thru, but lots, lots better
4) if you have a parametric eq Like amarra
     Knock down 3-5?db at the cross over frequency with a high q filter and it keeps the tone right but helps with the digital brightness

you have a tough problem to track down, if your hearing is showing you brightness on raal drivers


good luck, you'll need it

Frozen.  
     

All good suggestions.  Thank you so much.  My source is Tidal HiFi and HDTracks HiRez downloads streamed through a SB Touch using.  I agree perhaps to look at some reasonable fuses and try some different wire but I'm not going to drop a boatload of money on this to be sure.  I also had a dual core room correction a while back.  Didn't like it as I felt it robbed the sound of that natural resonant feel from bass and woodwind instruments.  

I do have a very competent tech who could upgrade the amp with parts consistent with what SMC does for much less money.

Hi dwolek,
Having experience with Steve's SMc Audio upgrades I can say that the quality of the result is far beyond just having a tech replace some parts.  Being the original designer (in most cases), and having spent years perfecting different levels of upgrades that include circuit changes as well as parts upgrades, Steve has a unique ability to get the most out of the already good-sounding stock McCormack gear.

I preferred the DNA-2 LAE that Steve upgraded for me over a pair of the much-heralded Ncore, NC1200 Acoustic Imagery Atsahs, and also kept the DNA-2 while selling another pair of highly rated Class A hybrid monos costing about 4 times as much.  I have experience with several well-regarded and expensive solid state amplifiers and I found the upgraded DNA-2 to be mostly competitive with all of them, with the choice of what I liked best coming down to personal preference rather than any sonic shortcomings. 

The preamp Steve rebuilt for me has bested every preamp (about 20) that I have owned and used in my system, including several units priced over $10K. 

My point is that the result of Steve's work can be very good indeed, both on an absolute scale and certainly for the money.  I have heard good things about CODA but I have also heard good things about the upgraded DNA 225.

After re-reading my previous post on this issue, I want to amend.  I mentioned "harshness" in the treble.  I should have said an "over-emphasis" in the treble with the stock DNA-1 amp.  Steve's circuit modifications evened out the frequency balance, opened up the soundstage and revealed a smoother, more life-like texture to instruments.  The difference is amazing.  If you have a specific budget to work within, it can't hurt to call and talk to Steve and see what he can do for you.

All the best!

Dwolek;

Dwilek; what at does that stand for?
where you at?

anyway, I second the power upgrades & forgot to mention it

VH Audio has some good stuff and good prices

I thought the outlet & power cable stuff was all " hooey" to......( engineer by trade)
bit it really does change stuff( almost like a new component)
i did the Furtech outlets and power distribution for $500 or so and it helped a boat load on the highs
( who would think outlet coating and wire would change the high end delicacy that much?)
it just cannot be!!!!

I would start on power as 1st choice, cheaper and easy

2nd, IC for amp to preamp was $300 or so & worked on delicacy and soundstage
allbthe other cables get real pricy

I tried the cableco on low cost stuff, naw
the cheaper stuff really doesn't do much

Kimber Hero is good, Best selling item for Kimber ( I hear)

see my comments on system

Frozen