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MDAC First Listen (part 00101000)

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With the CD slot loader, would it be possible to have a USB output to enable it to be used for ripping?
 
rmgalley said:
Hi John,

I hope the trip goes well. I'm still monitoring the forum on an almost daily basis but staying 'quiet'. The excitement is mounting. Congratulations on the excellent progress on the analogue board.

As you'll be needing numbers for the pending casework I'd just like to flag my interest in the 'MDAC2 Wide' with the CD slot loader.

Best wishes to you and Renata.

Roger.
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Hi Roger,

Good to hear from you :) sitting in the airport lounge in Paris contemplating the next few weeks ahead...

Also discovered that I'm not as strong as I used to be, dragging my 23kg suitcase full of chassis samples and a rack sack with my laptop was a near death experience! :( :D when I was a lad.....

I need to get out the lab more!

I'll send your kind regards to Renata when I speak to her next :)

I'm looking forward to working on the Amplifier ID :) I'll post pics when possible. However, I'm not looking forward to travelling into China :(
 
brab said:
Tried this in a separate thread but no replies. Anyone?

I have an Audiolab MDAC but am considering a 8200DQ for its analog inputs. Is the sound quality of the two the same? How does the DQ handle volume control? Is it analog for the analog inputs and digital for the digital inputs?
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Brab,

The MDAC the better sounding design.

The DQ is based upon the earlier CDQ....

With the DQ, the Analogue signal path is processed in the Analogue domain.

MDAC2 will be in a different league...
 
PhilCTTE said:
At least I think I have, as no copy in sent items :confused:

All the best for the trip :cool:
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Phil,

Don't worry we have reserved you x2 slave units, we can worry about the balance later.... but ignoring the "PCB's at cost" payments for your 3 MDAC2's - you would still have GBP100 credit :)
 
trevjm said:
Hi John,

Your PM box is full so thought I might as well post here.

I have sat back for a few days since I told you I needed to pull out of the MDAC 2 experience and have continued to read the forum pages with the same excitement. In fact it has lead me to slightly rearrange my plans regarding MDAC2. I am going to sell my MDAC and the Audiolab CDT but continue to pay for an MDAC2 L2 full width unit with CD transport if that is ok with you? I will be in no rush as to when I receive the completed unit. Indeed I may well ask you to hold onto it should things turn nasty with the courts (fingers crossed they won't). I don't see why I should dip out when we have done nothing wrong.

Have a great time in Hong Kong. Appreciate you are on business but it is a great place to be.

Best wishes

Trevor
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Hi Trevor :)

Noted (and Good luck) :)

Yes HK great, but I have so much to do here, and I need to go into China which I dread to work on the Mechanical design and hopefully meet with the SMD vendor :) But looking forward to the results :)
 
jansen said:
John,
I like to go for a full width chassis whith cd slot for MDAC2 when it becomes available. It will fit the VFETs :cool:. My understanding is that you can repair the salvaged MDAC1 pcb, you have organised for me, for a later reswap when the chassis is no longer needed? If so, my order is well placed and you have another customer for a full width mdac2 chassis. Have a nice and smooth trip to Hong Kong!!

Best,
Jan-Peter
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Yes, I'll repair the salvaged units where possible - but I'm sure a little patience's will be required :)
 
Superior said:
Hello John,

do you have some more details on the Full With Chassis appearance? Maybe some drafted front layouts or sample pictures from the vendor. Only to get a rough idea how the chassis later will look like. This would be really helpful to make a rough estimate for the WAF factor :D

And could you please confirm that it will be possible to use the Slave MDAC2 as standalone units as well.

Cheers!
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I have a 2D drawing that are not very clear that a draw up on my PCB CAD software! - as soon as I've worked with the Mechanical designer I'll forward 3D renderings :)
 
adamdea said:
Thanks John. Comparing the -60dB measurements, the difference does not look too dramatic over 6Khz. Are those tiny mains components peaking through on the transistor version?

On the 0dB measurements, am I going mad or are the distortion components on the MOSFET actually lower? -especially the third harmonic.
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Adam,

I'd not read too much into the Transistor THD as these ealier results where produced by tapping off the ESS's DAC Analogue signal from Jarip's Salvaged MDAC - the later MOS results where with the ESS DAC mounted on the MDAC2 analogue PCB.

Once I get back from the trip, I'll exchange the currently fitted MOSFETs with the Transistors and rerun the measurements...
 
sprint said:
My understanding of the HQ PSU was that it would only go ahead if it was shown to provide improved SQ over the std PSU? Is that still the case or has one been built and shown to provide improved SQ?

Should the HQ PSU not provide significant improvement in SQ then would there be anything to be gained by using the FWC?

What would be the position for those who go the original DIY route and fit the MDAC2 PCB into their existing MDAC's, how would they be able to add the HQ PSU if it was proved to provide improved SQ? Would they then have to purchase a FWC as well?
Click to expand...

No plans to offer a HQ PSU for the standard MDAC2 Chassis - the idea is to capitalise on the PSU chassis to add extra features such as the larger display & optional CD slot loader & Phono stage etc.

There would be little cost difference for a "Stand alone" HQ PSU and Full Width Chassis including the HQ PSU.
 
JohnW said:
The full width chassis will be two tone.... Silver with Black panel area....
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Earlier you said a full black one would be possible, drab, but possible.

In any case, put me on the books for a full back full width with slot loader.

I'll be in the same boat as jansen is wrt the salvaged unit -- a little patience is no problem, I've managed to wait this long on the MDAC2, what is a few months more :)
 
JohnW said:
No plans to offer a HQ PSU for the standard MDAC2 Chassis - the idea is to capitalise on the PSU chassis to add extra features such as the larger display & optional CD slot loader & Phono stage etc.

There would be little cost difference for a "Stand alone" HQ PSU and Full Width Chassis including the HQ PSU.
Click to expand...
I've slightly lost the thread of all this. Is it necessary to sign up for the full width option now if at all?
I remain of the view that it would be delightful to have the originally as planned M-dac 2 board by the end of the year and any other options in the fullness of time after it's clear what benefit they may have and once they are ready.
That said, I can see the attraction in having the statement design and to have the whole thing ready assembled.. But won't the front panel display, power supply, ultra analog digital isolation and whatever else is left take some time to design?
 
Adamdea
I had never heard of Arch until you mentioned it. I am currently running Volumio on my Pi2. Does Arch offer any advantages, particularly in SQ?
 
Please excuse my impressive ignorance of these matters but will opting for a cd slot loader in the full width chassis mean that I will no longer need my current Primare CD player ,which I use as a transport ,to play my cds? Thanks
 
JohnW said:
Brab,

The MDAC the better sounding design.

The DQ is based upon the earlier CDQ....

With the DQ, the Analogue signal path is processed in the Analogue domain.

MDAC2 will be in a different league...
Click to expand...

Again, thanks.
 
BrianPK said:
Please excuse my impressive ignorance of these matters but will opting for a cd slot loader in the full width chassis mean that I will no longer need my current Primare CD player ,which I use as a transport ,to play my cds? Thanks
Click to expand...

The full width, slot loading MDAC2 ought to make your Primare CD player surplus to requirements (unless you want a spare).
 
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