Recent upgrade to Cronus Magnum


A few weeks ago, my system consisted of the following components ...
Apple TV >> Naim Unitiqute (v1) >> Harbeth P3esr

While I liked the overall sound, I wanted to move up the chain and try something different. I felt the Unitiqute was a little underpowered. So when an Audio Rogue Cronus Magnum came up for sale (local craigslist), I jumped at the chance and bought it. I had a Cambridge Audio Azure 851D stored in my close, which I added to the chain. So now my system looks like this...
Node 2i >> CA Azure 851D >> Cronus Mangum >> Harbeth P3ers

When I first made the change, I was quite impressed with the increased loudness and a wider soundstage. However, I realized that, unlike the Naim, I was getting listener fatigue. There was a certain harshness (like metallic sound) to the vocals, especially female vocalists. Also, I was expecting some tube magic, which frankly is just not there. The Cronus Mangum sounds much closer to a solid state. Yesterday I put the Naim back in the system and much to my surprise the little box is keeping pace with the much more powerful Cronus Magnum. Yes, it doesn't play as loud and the soundstage is not as wide, but the sound is so much more refined, smooth and balanced. I'm wondering if I made a mistake. So before I make further changes, maybe the good folks at Audiogon can provide some relief.

What do you think is the weak link in my system? Should I keep the Cronus Magnum and try a more musical, refined DAC? If yes, what do you guys suggest (prefer used, below $2000)? Or do I ditch the Cronus and go for a more tube-like sound (Primaluna, Rogers, vintage ARC, etc)? The little voice inside me is telling me to sell the Cronus and move up the Naim integrated chain (e.g. Supernait), since I really liked the Unitiqute's refinement and balance. But then again, what if it's not the amp (Cronus) but the DAC (CA Azure 851D) that's the likely culprit here? Should I change the DAC first? Or maybe try rolling different (smoother?) tubes?

As you can see, I'm mighty confused and can use some pointers. So many variables ... aargh!!!!
128x128arafiq
Just my two pennies worth, your description of the Cronus is exactly what I heard from a Primaluna integrated a little while ago, so I’d think twice about including that as a possible replacement.


IMO- your to-do list in the proper order:

1) Check (4 or 8 Ohm) Impedance setting
2) Perhaps what davekayc suggests.
3) Tube rolling
* I disagree with the Power Cord suggestion, unless you happen to have another one to try. Not that it won’t change the sound, but I wouldn’t dump any money on one.
I had the Cronus magnum II with the kt120’s and it was nothing like you described. I also switched out the preamp tubes to PsVane tubes. I liked the Cronus much better than the prima Luna integrateds, which I thought were so so and not very powerful. I also used the 4 ohm load setting. The only reason I sold it was that the bass wasn’t as tight as I like
Wow, thanks for so many wonderful suggestions! Based on several responses, I'm leaning toward the suggestion to try and work with the amp settings/tubes before jumping ship. I was trying to figure out how to check the impedance setting, but it looks like I'll have to take the top cover off to see. Once I check that, I'd try the DAC in the Node. If that doesn't bear any fruit, then I guess it's time to roll some tubes.

The original owner had already replaced the center tube with a NOSS mullard, which is what I have. Are there better alternatives (for warmer sound) than the NOSS mullard?

BTW, I forgot to mention that the speaker wires that I'm using are by Clear Day which are silver. Is it worth replacing them with copper to tone down the brightness?

I'll try to check, and possibly adjust, the impedance settings tomorrow and report back the findings. As always, I'm really grateful to you for all the help. Will keep you guys posted.