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CEntrance DACmini DAC/Amplifier Official Thread - Page 73

post #1081 of 1368
Originally Posted by Audiowood View Post

Ok noted. In this case, I might request for a mod..

I just noticed that CEntrance now has a low gain IEM mod available (for $99 extra). I don't think that existed when I bought my unit, although the high gain mod was. (My unit has the standard gain, which works great for my 300 ohm Sennheisers.)

post #1082 of 1368

You might also want to consider the 1-Ohm output impedance mod if your IEM or headphone has an impedance of 80-Ohms or less.  

 

Mike

post #1083 of 1368
Yeap, I am going for the 1 ohm mod as well..
post #1084 of 1368
Quote:
Originally Posted by Bostonears View Post

I haven't tried the Shure 846 with my DacMini, but with other Shures I've tried, the sound is great but the sensitivity of the IEMs is so high that there's very little usable range on the DacMini's volume control.

Quote:
Originally Posted by Audiowood View Post

Yeap, I am going for the 1 ohm mod as well..

When I had my Dacmini, it was a 1 ohm mod as well. And it performed very well with my CIEM's. With one drawback... very little usable range on the volume knob, as Bostonears mentioned.

What I did was apply around 6db or so (if I recall correctly) digital attenuation in jriver using internal volume. There was no perceptible decrease in SQ with a bit of digital attenuation, and allowed a much better range on the volume control. (Although others may disagree... Some adamantly state that digital signal must be kept at 100%). II your player has good volume control, it's not an issue to run the volume down a bit.

Using full size headphones though, I'd run volume at 100%. And liked having the gain right where it was (standard).I guess you need to weigh what your usage would primarily be, headphones or iem's as far as ordering with the low gain mod.

All that said, I really prefer the hifi M8 for CIEM's, due to selectable gain and tone shaping. I like the flexibility. Just my opinion though.
post #1085 of 1368

Should I get the high gain mod for my Beyerdynamic T90 headphones. Is it worth the money?

post #1086 of 1368

If you're considering doing the high gain mod, then I'd recommend looking at the PX instead and get the headphone recabled so you can use an adapter to power off the speaker taps. You'll ultimately have more versatility that way.

post #1087 of 1368
Quote:
Originally Posted by Armaegis View Post
 

If you're considering doing the high gain mod, then I'd recommend looking at the PX instead and get the headphone recabled so you can use an adapter to power off the speaker taps. You'll ultimately have more versatility that way.

 

Excellent Idea.  Or, they can feed the DACmini into a small speaker amp like my Emotiva BDP-1 which drives Stax transformers and HE-6 with 3x the power of the PX at 1/2 the total price.  :tongue_smile:

post #1088 of 1368

Is there a difference in sound between the class A headphone amp and class D speaker amp.

post #1089 of 1368
Quote:
Originally Posted by jamesng45678 View Post
 

Is there a difference in sound between the class A headphone amp and class D speaker amp.

 

Yes, Maybe, No, Sometimes.

post #1090 of 1368

It depends on what you are driving, and it's resistance and capacitance, and other stuff beyond my understanding...

post #1091 of 1368
Quote:
Originally Posted by HeadphoneAddict View Post
 

 

Excellent Idea.  Or, they can feed the DACmini into a small speaker amp like my Emotiva BDP-1 which drives Stax transformers and HE-6 with 3x the power of the PX at 1/2 the total price.  :tongue_smile:

 

Fair point, but then you're also into two boxes instead of one.

 

The high gain mod is an extra $100 which really doesn't make that much of a difference (maybe 2dB?), and since there's only a $200 difference between the CX and PX, I figure the PX would be a better value in that regard.

 

I've driven stax transformers off a 20-30W amps before with no problem, so the PX should handle that just fine.

 

Quote:
Originally Posted by jamesng45678 View Post
 

Is there a difference in sound between the class A headphone amp and class D speaker amp.

 

Yes there is. I've already written about that a couple times, and there's even more impressions if you follow the links in my profile.

post #1092 of 1368

I am just afraid that the sound from the speaker output may not be as refined as the sound from the class A headphone output.

post #1093 of 1368

"I have never known any distress that an hour's reading did not relieve."    - Charles de Montesquieu

post #1094 of 1368

Thanks folks, PX seems like a good all in one.

post #1095 of 1368
Quote:
Originally Posted by Armaegis View Post
 

 

Fair point, but then you're also into two boxes instead of one.

 

The high gain mod is an extra $100 which really doesn't make that much of a difference (maybe 2dB?), and since there's only a $200 difference between the CX and PX, I figure the PX would be a better value in that regard.

 

I've driven stax transformers off a 20-30W amps before with no problem, so the PX should handle that just fine.

 

 

 

$200 difference?  I thought it was $699 for CX and $1499 for PX.  I'll have to go look it up again I suppose. For a $200 diff the choice is obvious.

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