sandeepmenon
Member
Hi John,
Can you please add me as well to the M-PAX preorder list!
Thanks!
Sandeep.
Can you please add me as well to the M-PAX preorder list!
Thanks!
Sandeep.
MDAC first listen (part IV)
- Thread starter adamlau
- Start date
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Hi John
You can also add me on the preorder list of the M-PAX.
If I read well it includes:
-better power supply
-bypass for balanced two channel home theater signal
I suppose this is done by a XLR connection from MDAC to M-PAX and the HT signal also into M-PAX, where the switch is done?
Will this HT bypass selection be possible via the MDAC or another remote control ?
Boxes and colors are similar to M-DAC ?
Sorry if infos already available and buried elsewhere ;-)
Thanks !
Jean-Marie
You can also add me on the preorder list of the M-PAX.
If I read well it includes:
-better power supply
-bypass for balanced two channel home theater signal
I suppose this is done by a XLR connection from MDAC to M-PAX and the HT signal also into M-PAX, where the switch is done?
Will this HT bypass selection be possible via the MDAC or another remote control ?
Boxes and colors are similar to M-DAC ?
Sorry if infos already available and buried elsewhere ;-)
Thanks !
Jean-Marie
I don't remember the posts re emi/emc performance of various boards so am unable to assess or comment. To a certain extent, the extrapolation from the Hypex paper is that the major culprits for emi are what happens as connections/signals are allowed out of the case more than what is going on within the case
So, for a PC it would be what's coming out on the usb, monitor, keyboard cables and what's happening on the psu connection - the external brick for mini-itx pcs, lcd monitors etc.
I think emi/emc assessment is quite a specialised subject. I'd like to see objective measurements (or measurements by someone I believe to be objective) before judging one item to be better/worse. So so far I've assumed all PCs to be bad and to work around their limitations. So, lazily, at the moment my hifi pc is on a different cupboard to the hifi and plugged in to a different mains socket - outside the filter block used for my hifi. At some point I'll try bringing them toghether and sort out any interactions
Yes
It's not necessarily 'rf' - mains-borne noise is a better description, but yes, a filter will isolate in both directions (though not necessarily the same in each direction because it's not symmetrical between input and output)
They're a single filter per block. But you can also get inline filters for individual units. And clip-on ferrites will help filter both signal-borne and emitted interference. Mine mains filters have been home-made so I can't make any commercial recommendations.
There's a good thread on cyrusunofficial by IanMac about some home made filters with very good performance.
Mains cables- the facts ? and the fiction ?
Higher Current Schaffner Filters - one for IanMac
John_73
pfm Member
Hey JohnW (perhaps we need a seperate MDAC questions/answers thread to save you having to plough through quite so many posts!).
Having a very minor "issue" using MDAC with Spotify. This is via Win7, all setup properly and passes the bit-perfect test(s). When using Spotify the D3E indicator flashes constantly, and it also flips from 16-bit to 24-bit and back again very quickly in the display. Will try Spotify on my Mac and MDAC and see if it does the same. I'm assuming it's whatever codec Spotify Premium use which causes this?
Once the display off option is available in the official firmware update it'll be a moot point as I'll just blank the display.
By the way what exactly does the D3E function do? The manuals description just left me with a tech-headache
Cheers,
- John
Having a very minor "issue" using MDAC with Spotify. This is via Win7, all setup properly and passes the bit-perfect test(s). When using Spotify the D3E indicator flashes constantly, and it also flips from 16-bit to 24-bit and back again very quickly in the display. Will try Spotify on my Mac and MDAC and see if it does the same. I'm assuming it's whatever codec Spotify Premium use which causes this?
Once the display off option is available in the official firmware update it'll be a moot point as I'll just blank the display.
By the way what exactly does the D3E function do? The manuals description just left me with a tech-headache
Cheers,
- John
D3E is, AFAIK, a way of attempting to make reasonable use of bits 16-23 when the incoming stream has fewer than 24 active bits.
The compressed Spotify data is being de-compressed to something indeterminate between 16 and 24 bits depending on the nature of the data - this all indicates that the data is being passed unmolested through the computer. You are correct that it is entirely down to the Spotify codec - I really wouldn't give it a second thought.
The compressed Spotify data is being de-compressed to something indeterminate between 16 and 24 bits depending on the nature of the data - this all indicates that the data is being passed unmolested through the computer. You are correct that it is entirely down to the Spotify codec - I really wouldn't give it a second thought.
JohnW
pfm member
JohnW
pfm member
Hi Richard,
Thank you for your interest - ATM I'm not considering taking pre-orders for the MAMP or CDQ updates until the M-PAX is released - I'd like to avoid unkept promises - but I'll insure you get one of the first MAMPS when they are released (Just remind me of my promise)
John
JohnW
pfm member
Hi Jonh,
still waiting for something......anything......
loris
italy
Hi Loris,
I'll PM towards the end of the week - I need to send out TmR's SBT, I'll send your unit at the same time...
I've not left the house for the past couple of weeks, head's down working in GBP200 DAC and M-PAX simulations (design).
John
bigmarcelo
pfm Member
HI JohnW and others,
Received my Mdac last night - beautiful sound.... much better then my DacMagic Plus - better bottom end and more solid midrange ... DM+ is now on my work desktop.
Two things which you may be able to help:
1) paired via Coax from my Marantz NA7004, it has no problems with 16/44 or 24/44 .. however with 24/88, 24/96 or 24/192 it doesn't synch and drops out every few seconds..
2) the RCA inputs came out (I have a new replacement unit) - but the RCA's were very not tighlty connected to the case.. not sure if anyone experienced this or if it was a faulty assembly ...
I'm hoping the new firmware can address the HD audio from my Marantz .... at the moment I just swap the pre-amp to the marantz analogue for HD audio .... in which case, I still prefer standard CD 16/44 via the MDac ....
has anyone used a tube pre-amp with the Mdac? I have a tube pre-amp at the moment which the Mdac is connected to ... it is sounding a bit too warm at the moment (at least compared with the DacMagic) - as the Mdac settles I'll see what I'd do ... not sure if the tube pre-amp helps or hinders the MDac ... TBD ...
the Marantz NA7004 by itself, is not bad... the DM+ brings more detail, top end sound stage and bottom end puch, but the mids sound recessed compared to the Marantz by itself.... the MDac 'fixes' everything, tight bottom end, solid mids and detailed highs.... kinda the best of the Marantz and DM+ into one... will post a better review once I've had more time to live with it ....
Received my Mdac last night - beautiful sound.... much better then my DacMagic Plus - better bottom end and more solid midrange ... DM+ is now on my work desktop.
Two things which you may be able to help:
1) paired via Coax from my Marantz NA7004, it has no problems with 16/44 or 24/44 .. however with 24/88, 24/96 or 24/192 it doesn't synch and drops out every few seconds..
2) the RCA inputs came out (I have a new replacement unit) - but the RCA's were very not tighlty connected to the case.. not sure if anyone experienced this or if it was a faulty assembly ...
I'm hoping the new firmware can address the HD audio from my Marantz .... at the moment I just swap the pre-amp to the marantz analogue for HD audio .... in which case, I still prefer standard CD 16/44 via the MDac ....
has anyone used a tube pre-amp with the Mdac? I have a tube pre-amp at the moment which the Mdac is connected to ... it is sounding a bit too warm at the moment (at least compared with the DacMagic) - as the Mdac settles I'll see what I'd do ... not sure if the tube pre-amp helps or hinders the MDac ... TBD ...
the Marantz NA7004 by itself, is not bad... the DM+ brings more detail, top end sound stage and bottom end puch, but the mids sound recessed compared to the Marantz by itself.... the MDac 'fixes' everything, tight bottom end, solid mids and detailed highs.... kinda the best of the Marantz and DM+ into one... will post a better review once I've had more time to live with it ....
travelfotografe
pfm Member
Happened to me too. But i was using a coaxial cable with very tight RCA plugs. I used my fingers to pinch the metal piece that came out, shoved it back into the M-DAC and it seems as good as new. I have since changed to a better coaxial cable with canare 75 ohm RCA plugs (which gives a secured but not overly tight connection).
raysclim
Member
Hello John ,
any update when the final release version of MDAC firmware update will be ready ? for Mac OS particularly .
and will the update include dimming the OLED when needed ?
Thanks
Raymond Lim
The Marantz does not support 24/192, are you sure your files are 24/192?
bigmarcelo
pfm Member
it supposed to be ok for FLAC 24/96 over the network .. most of the HD stuff I have is 24/96, one or two albums in 24/88, I thought I had one in 24/192 .
double checking the manual, it does accept 24/192 as PCM via coax, - but USB and network are limited to FLAC 24/96 ...
that said, on the dacmagic plus, I couldn't not hear much/any difference between 96 and 192 .... to my ears....
24/96 would be more then sufficient for me... so, I'd like to get that working....
bigmarcelo
pfm Member
Yeah, I bought another cable today (Atlas) , so I won't be using the 'extra tight' one I have .... bummer, it was a nice cable too .....
I never had that problem before... so, need to be gentle with those connections....
the DM+ has been doing fine at my work, and I no longer have to lug my Govibe portatube amp/dac to work ... it will stay on my bedside table... not a bad thing really ... an Mdac for my office... that would be 'extravagant' .... although it would probably get more use than at home...
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