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Questyle CMA800 Current Mode amp - Page 35

post #511 of 633
Quote:
Originally Posted by project86 View Post
 

My full review is coming in the next week or so but to summarize - dual CMA800R really brings the LCD-3 to another level, and also sounds exceptional with HE-6 and HE-500. It makes a difference with HD800 but the improvement is nowhere near as drastic. I think just one of them already sounds so good with HD800 that maybe there just isn't as much room to improve. 

 

Very very curious to read this. I just posted up my review of the Nuforce HA-200 monos earlier today.

post #512 of 633

Today I made the purchase, finally! :D Now it's just the waiting part....

post #513 of 633

In case you haven't seen it, my review of the Questyle CAS192D is up. I know some people were waiting for that, so HERE it is. 

post #514 of 633

Got it in today! First impressions so far is that is a very very nice amp and a great match for HD800, no harhsness whatsoever. Got to spend more time with it before I say anything more, but I really like it so far!

post #515 of 633

Any impressions out there on using these as monoblocks yet?

post #516 of 633
Quote:
Originally Posted by Armaegis View Post
 

Any impressions out there on using these as monoblocks yet?

 

 

Mine is all written up, just need to snap a few more pics and I'll have it posted. That could be tomorrow or next week depending on how much I procrastinate....

post #517 of 633
Quote:
Originally Posted by project86 View Post
 

 

 

Mine is all written up, just need to snap a few more pics and I'll have it posted. That could be tomorrow or next week depending on how much I procrastinate....

 

Save me $1.5k and tell me its terrible! ;)

post #518 of 633
Quote:
Originally Posted by project86 View Post
 

 

 

Mine is all written up, just need to snap a few more pics and I'll have it posted. That could be tomorrow or next week depending on how much I procrastinate....

 

Looking forward to it! Tell me it's 5x better than the Nuforce monos :tongue:

post #519 of 633
Quote:
Originally Posted by Sylafari View Post
 

 

Save me $1.5k and tell me its terrible! ;)

 

 

It's terrible! No seriously, you'll see.... it sounds better across the board but some headphones benefit more than others.

 

 

Quote:
Originally Posted by Armaegis View Post
 

 

Looking forward to it! Tell me it's 5x better than the Nuforce monos :tongue:

 

 

I have the NuForce monos in and I do like what I hear. Questyle is better for sure, but of course not 5x better. It never really scales that way does it?

post #520 of 633

A linear scale would be awesome. We're gonna set 100% fidelity at $100 just to keep it simple alright? :tongue:

post #521 of 633

@project86 Do you know if the input impedance of 47K ohms changes when going dual mono? I wonder how well the dual mono setup would work with a tube preamp like the Bottlehead BeePre, seeing how you pretty much need a preamp when going dual mono. Right now I'm using the Bottlehead Smash preamp with my single CMA800R and I find it improves the sound in refinement, imaging, and spacing. Notably less compressed or congested sounding.

post #522 of 633

At most it would be reduced by a factor of two. Probably not enough to be concerned about.

post #523 of 633

Hmm. After listening in a longer period and testing some more tracks I hear something graininess-ish things in the treble region. It sounds harsh and not real life like. Also I switched back just to test the Vali and it didn't have the digitus-like sound. It also seemed that the Vali had more bass slam, and from what I've read here that should not be the case with the CMA800R.

 

Is it that my gear (the x-sabre with laptop) are the problem? Has anyone else experienced this?

post #524 of 633

The Questyle amp is going to be very revealing of any upstream component shortcomings.  Graininess and treble glare are generally DAC issues.  The Vali appears to be less resolving, and hence more forgiving, and most likely a bit colored as well.

 

Sounds like a DAC might be your next order of business.  Also pay attention to your laptop USB feed into your DAC.  It might be worthwhile for you to consider a front-end USB to SPDIF converter (DDC).

post #525 of 633
Quote:
Originally Posted by BleaK View Post
 

Hmm. After listening in a longer period and testing some more tracks I hear something graininess-ish things in the treble region. It sounds harsh and not real life like. Also I switched back just to test the Vali and it didn't have the digitus-like sound. It also seemed that the Vali had more bass slam, and from what I've read here that should not be the case with the CMA800R.

 

Is it that my gear (the x-sabre with laptop) are the problem? Has anyone else experienced this?

 

 

Weird. My experience with Questyle is the exact opposite - the current mode architecture leads to very grain-free details. Are you using XLR or RCA connections between the DAC and amp? X-Sabre has rather high output voltage with XLR and some amps don't appreciate that..... maybe that's the cause? 

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