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The Centrance HiFi M8 thread - Page 363

post #5431 of 5442

Cables do matter, also try turning the M8 off them on when connected....

post #5432 of 5442

Hi everybody! first post here. I have a Centrance M8 Classic for two weeks now, with EarSonics SM3-V2 and Velvet, listening 24bits most of the time. Out of the box, the Centrance requested about two hours charge before recognizing my iPhone 6, but no way with the PowerBook Pro: it did not "see" the Centrance. I replaced the provided USB cable by a spare one I had in a box and bingo!

 

I am happy with the small amp but I noticed something that I do not like and wanted to share:

 

Today I downloaded a 24bit/96KHz album from Qobuz: "Heart of Darkness" from Natalia Mateo. The track "Inferno" starts with very low bass guitar chord and there is an awful hiss added to it, so strong I renounced listening the track. I unplugged the IEM, plugged it directly on the Mac and the hiss was gone! back to the Centrance, I paid particular attention to tracks with low frequencies and noticed the hiss exists with almost all of them. I just thought it was part of the music before today, because there are usually more instruments playing than just a bass

 

You can easily test with iTunes as the first notes are available for free.

 

I would be extremely interested to hear if I have a defective M8 or if it exists on all.

 

My settings: 1 ohm, gain 2, no tone correction applied.

post #5433 of 5442

Try turning the gain down to "1". An IEM shouldn't need any gain.

post #5434 of 5442
Also note that the ohm switch is 11, 2, 1 . (Not 1, 2, 11))
post #5435 of 5442
I've been having a hard time with my M8...it was connecting to my PC, but I was getting a clicking sound (like the sound of a dusty vinyl album)...mentioned this earlier. Now, I can't seem to connect at all. My usb ports report an unsupported gadget connected, JRiver won't play anything through it. I'll give it a recharge and try again tomorrow, but I'm getting quite distraught over my expensive paperweight.
post #5436 of 5442

I turned gain to 1, but I have to turn volume up and the result is almost the same. Fortunately, it seems to me the hiss is only associated with sustained very low frequencies when listening at high volume level. It doesn't affect the rest of the spectrum, or at least, I do not find it annoying. At lower sound level, it almost disappears, but the listening experience is more intimate, and I like classical music and jazz (big bands). Well, I guess I will have to lower the volume. Meanwhile, I heard what a DAC is capable of when someone want a much better listening experience. I will look at high-end DAC like the Teac UD-501, Naim DAC-V1, Wadia 122 and maybe the Marantz NA-11S1 (another budget).

 

Thank you!

post #5437 of 5442

Still experimenting and found an interesting result:

The hiss exists using the Centrance with a USB connection to my Mac (MacBook Pro 13"). If I listen the very same file ("Heart of Darkness" from Natalia Mateo, track "Inferno") with my iPhone 6, regular Apple cable connected, Qobuz streaming 16bit/44.1KHz (instead of 24bit/96KHz for the Mac), the hiss disappears, even with gain to 2.

 

I switched to the iTunes version (demo file) on my iPhone, and the result was also *much* improved (hiss barely audible)

 

The hiss would then be introduced by the main USB entry on the Centrance, or the cable itself, or the Mac output. I will check all these and come back.

post #5438 of 5442
Quote:
Originally Posted by KrissBill View Post
 

Still experimenting and found an interesting result:

The hiss exists using the Centrance with a USB connection to my Mac (MacBook Pro 13"). If I listen the very same file ("Heart of Darkness" from Natalia Mateo, track "Inferno") with my iPhone 6, regular Apple cable connected, Qobuz streaming 16bit/44.1KHz (instead of 24bit/96KHz for the Mac), the hiss disappears, even with gain to 2.

 

I switched to the iTunes version (demo file) on my iPhone, and the result was also *much* improved (hiss barely audible)

 

The hiss would then be introduced by the main USB entry on the Centrance, or the cable itself, or the Mac output. I will check all these and come back.


Yes, totally possible. I had a weird static noise (sounds like hiss) on my Schiit Modi for the longest time. Wasn't the USB in my case but the power extension cord. Once I changed to a power extension cord with surge protector (or better circuit, I don't really know) the noise/static was gone. 

post #5439 of 5442

And the verdict is... it is not the Centrance, not the cable, nor the Mac output: the culprit is... the interface between iTunes and the Mac Audio Midi Setup!

Listening the same file from Qobuz desktop did not show the hiss problem. On the other side, Natalia Mateo, track "Inferno" always hiss through iTunes, whatever the file version: iTunes Store version, 24/96KHz version..

 

I confirm I use the very last iTunes (12.1.2.27) and that the Mac is configured 24/192KHz

 

I played a little with the output (Mac Audio Midi Setup), from 192KHz to 96KHz then 44.1KHz, improving each time.

Listening to the Qobuz desktop application, the result was fine, whatever the Mac Audio Midi Setup.

 

Hope this can help other users...

post #5440 of 5442
Quote:
Originally Posted by KrissBill View Post
 

And the verdict is... it is not the Centrance, not the cable, nor the Mac output: the culprit is... the interface between iTunes and the Mac Audio Midi Setup!

Listening the same file from Qobuz desktop did not show the hiss problem. On the other side, Natalia Mateo, track "Inferno" always hiss through iTunes, whatever the file version: iTunes Store version, 24/96KHz version..

 

I confirm I use the very last iTunes (12.1.2.27) and that the Mac is configured 24/192KHz

 

I played a little with the output (Mac Audio Midi Setup), from 192KHz to 96KHz then 44.1KHz, improving each time.

Listening to the Qobuz desktop application, the result was fine, whatever the Mac Audio Midi Setup.

 

Hope this can help other users...


Very interesting...

 

Try using VOX - it's a free player for the Mac another great add on to iTunes is bitperfect. http://bitperfectsound.blogspot.com

 

Cheers,

K

post #5441 of 5442

Well, bitperfect saved my day :gs1000smile: ! IT completely solved the problem with iTunes. Thank you Koolpep!

post #5442 of 5442
Quote:
Originally Posted by KrissBill View Post
 

Well, bitperfect saved my day :gs1000smile: ! IT completely solved the problem with iTunes. Thank you Koolpep!


Am glad I could help ;-)

 

Enjoy your Hifi M8!!

 

Cheers,

K

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