Working on the new setup with NAD M50

[wkhanna]

I agree totally, there are many ways to ‘skin’ the proverbial cat.
Your (therefore our) approach seems as appropriate as any other, AFAIC.
We have a V stable, reasonably clean OS & server platform, decent mid-level DAC’s & decent cables. Everything is evenly matched, & IMO sounds quite good.

I believe we are both at the point that addressing (read spending significant $ on) clocking would really have a sonic payoff that would be commensurate to the cash outlay.

I guess that VPI Traveler TT is going to have to wait, but I just do not know if I can live without picking up a Soundsmith cartridge sometime in the near future.:B

[Finleyville]

I am so happy that I live close to you two that I can reap the rewards from the gobs of cash that you throw at your systems!

[PewterTA]

Jon... I think we'll need your expertise to build ourselves a rubidium clock for our systems... hee hee. Purely so we can indulge Michael!

[JonMarsh]

It's a cake walk... easier than a NatalieP crossover board!

[wkhanna]

No problem........I already found a couple.....

We should get couple of these Antelope units!

Antelope-Audio-Isochrone-10M-Rubidium-Atomic-Clock

Here is a 'real deal' that even comes with instructions - some how, I don't quite think it is up to The Maestro's standard, however.

Or.....just make our own........

It only gets two measly paragraphs in Wikipedia.....how complex could it be?

....See, nothing to it!

[JonMarsh]

No problem........I already found a couple.....

We should get couple of these Antelope units!

Antelope-Audio-Isochrone-10M-Rubidium-Atomic-Clock

Here is a 'real deal' that even comes with instructions - some how, I don't quite think it is up to The Maestro's standard, however.

Or.....just make our own........

It only gets two measly paragraphs in Wikipedia.....how complex could it be?

....See, nothing to it!

The Antelope Isochrone 10M has been around for a while, and it certainly sets a standard...

Note that the Wikipedia article references the Stanford Research PRS10 which I've previously mentioned and discussed- that one is only around $1500 plus some change for necessary accessories (interface board, heatsink for bench top operation).


That makes the one from the vendor I usually use on eBay look very reasonable!

http://www.ebay.com/itm/high-performance-rubidium-LPFRS-10MHz-Oscillator-low-phase-noise-and-spurious-/170926949873?pt=LH_DefaultDomain_0&hash=item27cc0a 45f1

OTOH, I do hope to get an SRS PRS10 for myself for Christmas, but if funds are limited and I have to chose between it and a new Leslie 3300 tone cabinet for my organ, I'll go with the latter. The PRS10 would be a theoretical upgrade, but my friend and I have never sat down and down a shoot out versus the used Swiss made one from China. OTOH, the PRS10 has a special rubidium tube with reservoir that is rated for 20 years continuous operation. Longevity is a factor not to be dismissed.

Image not available

[wkhanna]

The Leslie wins out by landslide simply by virtue of utilizing vacuum tubes!
That sweet thing has those whirling, rotating drivers that make that famous Hammond B3 type sound, doesn't it?

Edit: I love this part listed in the specs: "Vacuum tube pre-amp with EAR-SHATTERING 300-Watt RMS solid-state amplifier"



Thank you for the link to the clock!
That D-B 9 pin connector makes for a straightforward hook-up.

Would one of these make a good match?

[JonMarsh]

The Leslie wins out by landslide simply by virtue of utilizing vacuum tubes!
That sweet thing has those whirling, rotating drivers that make that famous Hammond B3 type sound, doesn't it?


Thank you for the link to the clock!
That D-B 9 pin connector makes for a straightforward hook-up.

Would one of these make a good match?

No, that's the right power supply for a Trimble GPS disciplined oscillator; for the clock I linked to, you need a +24V supply, that can deliver up to 4A (startup/warm-up current); operating at stable temperature it pulls 800 mA to 1A. Lots of stuff on eBay, but you might try new with a conventional distributor. Would recommend Linear or low noise SMPS.

This would probably work.


http://www.ebay.com/itm/2-Way-Output-24V-4A-Power-Supply-96W-Waterproof-For-Outdoor-Use-/360476216824?pt=LH_DefaultDomain_0&hash=item53ee0e 8df8



Connecting cable between clock and re-clocker is SMA to BNC. You can find those on eBay too.

This one:

http://www.ebay.com/itm/10ft-BNC-Male-Plug-to-SMA-Male-RG58C-U-RF-Coaxial-Cable-CablesOnline-RF-BS10-/390513235143?pt=US_Radio_Comm_Coaxial_Cables_Conne ctors&hash=item5aec6714c7

Yup, the Leslie is to go with tone wheel clone organ, the KeyB I have, which is the closest thing functionally in a portable I've ever found to my old B3 Hammond. It's not just very close, it's actually better, as it has all of the same control functionality, plus it uses samples from three different B3's, as well as having many controls the original B3 didn't, like tone, digital reverb, overdrive that does mimic well a setup like Jon Lord's using the Hammond into Marshall amps to drive the tone cabinet.



Getting the Leslie would be a much bigger quality of life boost than having a slightly more stable clock reference... :W

The 3300 is pretty dang cool; vacuum tube pre map, its own overdrive feature if you want it, both type of Leslie input connectors as well as a 1/4" connector input I could feed from one of the outputs of the Line 6 Pod HD Pro (think guitar with Leslie on one channel), and it's 300W, not the typical 40-60 watts of an old tube Leslie. And a much more robust HF driver. Rocks!!

[wkhanna]

Thanks again for more links!

Here is one for everyone else, since I am pretty sure you have already seen this: John Lord

[JonMarsh]

Yeah, too many guys passing on, at what I think is too young- but then, pancreatic cancer is pretty much a death sentence, either fast or slow, depending on the type.

[wkhanna]

Yes, so true & so sad to be loosing such talented artists & creative genius.

Such familiar names that we grew up with like Lord & Dolby.


On a brighter note, I remember your keyboard from the other thread......V nice!
....how are you liking those Audioengine speakers?
Those are the 5+, right?

[wkhanna]

..... for the clock I linked to, you need a +24V supply, that can deliver up to 4A (startup/warm-up current); operating at stable temperature it pulls 800 mA to 1A. Lots of stuff on eBay, but you might try new with a conventional distributor. Would recommend Linear or low noise SMPS.

This would probably work.


http://www.ebay.com/itm/2-Way-Output...item53ee0e8df8.............

A funny thing, this....... Getting your recommendation on a PS is sort of like getting a recipe for fuel for my homemade rocket from Herr von Braun.

[JonMarsh]

Yes, so true & so sad to be loosing such talented artists & creative genius.

Such familiar names that we grew up with like Lord & Dolby.


On a brighter note, I remember your keyboard from the other thread......V nice!
....how are you liking those Audioengine speakers?
Those are the 5+, right?

Yeah, and they're made with bamboo! Death to MDF! :W


Seriously, pretty decent little boxes, decent neutrality, good dynamic range for the size, and peripheral friendly features.

Back to the digital- something else you'll need is a heatsink for the rubidium clock. Refer to my first post- I've got a number of those, can send you one if you decide to go down this path.





The clock I linked to, which I bought, has threads for metric M3 bolts. Get those at your local hardware store, or wherever is convenient.

Just to be clear on my current plans,

• Plan to order a Mutec MC3 plus early in October- it's a special item, don't know if it goes to Markerteck from US distributor or direct from Germany
• Will setup a shoot out between Mutec and Brainstorm, using same type clock (I'm ordering another rubidium LPFRS)
• The Brainstorm DCD8 only supports single wire AES up to 96 kHz- above that, it runs in double wire mode (two AES/EBU connectors per stereo pair), I'm hoping the Mutec works in normal single wire to 192 kHz.
• Sources for test will be NAD M50 (AES output) and iMac running Audirvanna and/or Fidelia into Berkeley Alpha USB, both CD source, HD Tracks high res, and ripped SACD converted to PCM
• The crossover updates, internal damping updates and construction completion, and new internal wiring will be completed on the Isiris and some break in done before doing this shoot out, which makes a likely date around Xmas holidays, as finding time before then isn't going to be easy, and there's a lot of ground work to complete in the mean time.
• The Brainstorm is the reference - we know what it does- the Mutec is the new challenger that may offer comparable performance at half the price, and may support quad rate in single wire mode- that is of considerable interest. But bona fides need to be established....

[JonMarsh]

Now, with regards to the SMPS, if you're feeling a little flush, you can get the same one I bought used on eBay new at Grainger:

http://www.grainger.com/Grainger/OMRON-Power-Supply-2REK1?Pid=search

Nice voltage readout, reasonable ripple filtering, and just generally groovy.

[JonMarsh]

My colleague in Munich hasn't been wasting any time since I told him Friday a week ago about the release of the Mutec MC-3 Plus- he's got two in now for testing this weekend.








We're in email discussions right now about how to test it, in what configurations in his system; we'd be on the phone, but I think he's trying to keep this on the down low from his wife, at least temporarily... :W

BTW, I'm expecting good things of this unit; I've read of others using this in home and studio systems with units like the Mytek DAC and gotten significant results without the 10M clock (they didn't know anything about that technique), and it's beaten out units like the Apogee Big Ben.

A reminder, Mutec is a German firm.

[wkhanna]

You guys do not waste any time!

One of the first things I noticed about the Mutec was its German origin.
Something I see as a positive characteristic.

Regarding little secrets from The Wife........

[JonMarsh]

I yam what I yam...

Was able to get to the post office today, thank heavens, and picked up the Popeye supplies from Hong Kong.

Fired one up and checked it with the mini-RAID box loaded with drives, everything looks good.

Image not available

Hopefully will have time to take a few local pictures tomorrow- I'm on a grind trying to get errands done in time for dinner with GF.

Also went ahead and ordered an MC-3 Plus after preliminary feedback from my Munich connection.

BTW, I love the pic! Problem is, my GF KNOWS what my system costs; she's a bit horrified, except that she's heard nothing like it before...

and she loves classical music, especially live classical, and she admits this sounds much more like live than anything else she's ever heard (of course, that bar isn't probably very high.... best I not sprain my arm patting myself on the back!)


She'll get a kick out of this....

[wkhanna]

Fired one up and checked it with the mini-RAID box loaded with drives, everything looks good.

Progress! Excellent!
Have you finished loading your files on the RAID?

.......ordered an MC-3 Plus after preliminary feedback from my Munich connection.

Wonderful news!
We are keeping our fingers crossed!
If it meets or exceeds minimum performance requirements it really brings this project much closer to an affordable level.

[JonMarsh]

Had only enough time yesterday to just get the iMac 21 brought home from GF's and setup with Max for finishing the artwork loading and conversions in the workroom, and run a couple of albums. I'm in the 'S's now. Should have time for getting more done today.

Also ordered an NAD M52 digital vault, so GF will have an easy way to load her CD's; she was asking about that this weekend and when it would be ready. That's a good sign...

[JonMarsh]

I got well into the 'T's yesterday. Did I mention there are a lot of 'T's? Think of all the album names that start with "The ..."

The weekend seemed far too short, and far too busy- and no time for speaker or musical instrument stuff. Now, back in the 5:30AM to 8PM grind until next Saturday...

[wkhanna]

I got well into the 'T's yesterday. Did I mention there are a lot of 'T's? Think of all the album names that start with "The ..."

Ha!!!
I was going to ask if you leave the word 'The' with the Artist/File Name in your metadata......it can get to be a pretty big list if you do......

The weekend seemed far too short, and far too busy- and no time for speaker or musical instrument stuff. Now, back in the 5:30AM to 8PM grind until next Saturday...

We are all V hopeful that a reprieve will soon materialize regarding your current work schedule..... nuff said on that topic.

[Hdale85]

Nevermind! I'm blind

[JonMarsh]

Nevermind! I'm blind

Nah, we're just sneaky, setting up a new thread!

The NAD M52 digital vault did arrive, and it's setup and the M50 is being fed CD's to rip to it while I work a design review for our customer today... almost wrapped up, I think.

Images not available

Images from Alpha Audio in NL- I haven't had time to take any pictures!!

[Hdale85]

Yes, but I had posted in the new thread just never realized the title haha.

[JonMarsh]

Another step of progress- the refurb Ipad3 I'd bought for the trip to Northern England this summer as a media iPad but didn't take because using the WiFi would crash it is now working fine, after wiping it and installing iOS7; perhaps a corrupted earlier OS install? Now it's the dedicated M50 NAD iPad app remote control, and has performed flawlessly this weekend while stuffing the maw of the M50 loading CD's in FLAC on the M52.




I'm getting itchy to hear it in the system, but it's staying over at home for a while to load more music, and sort out the reclocking chain and test stuff before taking it over to GF's. What with losing at least 1 weekend day to work most times, it will be a bit slow before everything is ready (and that's not counting finishing the crossover build updates... slow work takes lotsa time!)

[JonMarsh]

talk about low effort ripping- just stuff the CD in and walk away, come back when it's done and put another one in.





Those stacks of CD's on top of the M50 are about 2 feet tall now, and growing...

[impala454]

It could be a little easier... :P

[youtube]mmHycIOtYHA[/youtube]

[PewterTA]

HA HA... I like Jack.... no offense Jon... but that would be sweet to make that work with the NAD!

[JonMarsh]

I think I have another piece of the puzzle under control now...

As far as I can determine, the NAD M50 Vault uses a Linux file system variant, not sure which flavor, but though there are some open source read only drivers for the Mac, I've found a commercial read/write driver EXT/FF from Paragon software....

http://www.paragon-software.com/home/extfs-mac/eshop.html?affChecked=1

Pretty reasonable price, and hopefully it should allow me to backup the M52 as well as write high res files to it... we shall see...

[JonMarsh]

well, NAD must be doing something trickier than standard Linux EXT/FS formats, because I can't read the disk with the new drivers installed.

Last week there was a nice update on the iPad controller software, and this morning there is an update for the M50 firmware, which I'm downloading and installing right now. Will be curious to see what that brings. The player update improves some of the menu organization, and adds a direct download from one Highres site; will have to check out what that's about.

For now, strategy is changed a bit, just load up all the CD's I can on the M52 digital vault. Really wish I could back that up, though... may need to give some feedback to NAD.

[JonMarsh]

Big improvement in ripping behavior

The update to the NAD firmware is substantial- perhaps overdue?

It seems as if they've gone in and completely rewritten the ripping routines and how it gets album artwork off the internet, because it's about twice as fast ripping, and far more albums are coming up with artwork, now. What seems to be happening, if I watch the rip/encode status while ripping, is that it gives higher priority to ripping, and builds up a larger/longer queue for the encode process; but you can keep stuffing CD's in without issues. indexing is working better/faster, and as I mention, far more albums are coming up with the embedded artwork now.

In one sense, I'd say this is how it should have worked from the get-go, but it's good to see that the online updates are getting loving and real work- the improvement in my subjective pleasure of how the iPad app works and the player works is substantial with these two new updates.

Unfortunately, finding any substantive information about updates like this is not so easy... a situation I'd like to see changed. But so far, I'm pleased with the process.

[wkhanna]

For now, strategy is changed a bit, just load up all the CD's I can on the M52 digital vault. Really wish I could back that up, though... may need to give some feedback to NAD.

That is too bad.
There is no such thing as too much file redundancy.

[JonMarsh]

One drive can die and the RAID array will still work and can be rebuilt. I'm wondering if the drive needs to be pre-formatted or what- some things I want to look into.

I was able to research the HD type; they're Seagate Pipeline/Video HD's designed for 24/7 operating performance in enterprise environments; it's basically a 72000 RPM mechanism slowed down to 5900 to reduce wear and improve the thermals. AFR (annual Failure rate for 24/7 operation) is 0.55%. The whole design focus was noise and vibration and heat reduction and optimizing operating lifetime for applications like video and security.

[JonMarsh]

The NAD M50 was moved to GF's a week ago, and setup with a wired connection. She's been having fun loading CD's in it and setting up her own iPad 2 with the NAD remote software.

Last Saturday I tried to get the WiFi up and running and logged into her network, but it just didn't seem to want to cooperate, raising possible issues in my mind about whether the after market WiFi antenna was working or if there was an issue with the NDA M50.

Well, leave it to an ex IBM systems engineer to solve the problem, she did the equivalent of a Control/Alt/Delete and rebooted the system - then in came up with a front panel message, "Searching for network", and apparently did locate and log on, as she was able to connect and monitor/control all activities (including rip/encode status) from the iPad...

I've never had a system you had to reboot to get the WiFi to work, but then this isn't a PC, and it's not an iPad either, though it uses an ARM processor. At least it seems to be up and running on Wifi now! :T

[wkhanna]

Ha!
Outdone by the GF, and on a PC to boot!

Just like the first thing the IT help desk always says, "Did you try a re-boot?":roflmao:

[JonMarsh]

well, it's not a PC, it's a custom ARM computer. But yeah, at least I have tech support at home I can call, though she didn't work on IBM PC's but on mainframe's and AS400 midrange systems!

[wkhanna]

Well, without my tech support (Dan, aka PewterTA) I would be nothing but a helpless spectator.

[PewterTA]

Ha ha... Bill has come a long way!!! He's gotten good enough to at least know where the problem resides and lots of times can fix it himself... we've really grown to more complicated issues is the things he can't fix himself. Also helps that he's finally gotten to the level of good gear that doesn't always cause problems. That helps immensely!!

[JonMarsh]

Ha ha... Also helps that he's finally gotten to the level of good gear that doesn't always cause problems. That helps immensely!!

I'm sure that's a big help- but that's also how I see converting from a PC or Mac based music server to something like an NAD or someday Aurender- totally dedicated and hopefully rock solid.... Cross fingers...

[JonMarsh]

Well, today has been crazy, getting ready for dinner, but also getting the new LF crossover hooked up to the Isiris, and the reworked Cambridge 840W amp.

But the "big news" is getting the NAD M50 hooked up with almost 200GB of FLAC it ripped from CD's. Initial impression is quite positive in comparison with the Tascam CD transport. It only took about two minutes to train GF on the playback operation. No time for critical listening, but some initial checks show very nice imaging. But for now, it's dinner time!

Happy Thanksgiving everyone!

[JonMarsh]

Managing the M50 in a network environment

Long time no post on this topic, as the speaker projects have been taking priority in efforts- but some new information has come to light which should make me much happier about managing and expanding this system.

Frankly, the standard documentation is missing more than a few pieces of information I'd like to have, like how to back up files from the M52 disk array, and how to get high resolution files ONTO the M52 disk array, other than using one of the external services that NAD now has software support and support arrangements with.



Well, there's a new review online at Stereophile of the NAD M50 player and M52 disk array, and the network savvy John Atkinson dropped more than a few clues on what should be possible to do and how to do it, so I'll check that out this weekend (hopefully!) and report back.

IF all works as expected, I should be able to back up all the CD to FLAC rips directly on to one of my WD Velociraptor arrays or LaCie arrays, and load up my high resolution HD Tracks files fairly quickly... and all I should need is a Thunderbolt to ethernet adapter for my Mac.

This makes me feel much better about the long term usability and maintenance of this system. NAD has been doing their part- about a half dozen player firmware updates, and even more remote control program for the iPad updates.

Of course, I didn't pay full boat for these, anyway- and while many people are quick to poo-poo the M52, it should be noted that it DOES use special drives originally developed for 24/7 video surveillance and with very long MTBF's. To me, comparing off the shelf desktop drives to high reliability drives on a cost basis alone is penny wise and pound foolish...

YMMV, of course, but I've been nothing but happy with the performance of this system, and steady improvement of the software stack.

I have a colleague from HQ who may be over here in June, who's been something of a partner in crime with this music stuff (especially the DAC comparisons and experimenting with re-clocking) - his wife is a physician and critical listener, and keeps him in line a bit, but he's got a solid ear and has been itching to hear the Isiris project. So there's work to be done to get everything up to snuff by the middle of June....

[JonMarsh]

Proof of concept in hand...

Proof of concept verified, just with WiFi- I don't think the built in WiFi on the M50 is intended for anything beyond remote control interface- even when you're downloading firmware, it prompts to make a hardwired network connection.




This puts a whole different complexion on data management for the M50 server and M52 combination- I'm one happy camper to see this possibility! On the weekend, we'll do some hard core file management and transfer my HD Track files there, too! :B

[JonMarsh]

Several possibilities are unlocked by this discovery which should be very useful. Keep in mind that part of why this is exciting to me, is because the basic configuration of the M50 and M52 is so functional in most ways (including the control App, and flexibility to use the drive as either a ripper OR a memory player (tracks are loaded into memory and played from RAM, just as for playing back tracks form external drive and from NAS) and sounds so good, I really don't want to go back to a more conventional Mac/PC music server (of which I've built quite a few, and never been happy using for all that long...)

• CD's that are not identified by the database used by the ripper functionality are placed in an "Unknown" folder at present- now, it should be possible to update the ripped files with track names and adding in album artwork, using a copy and copy back pass in conjunction with Max software on my Macs
• The M50 software saves a JPEG image into each album folder; sometimes successfully identifies and rips and album but doesn't get a JPEG image, or gets the wrong image. Now those images can be updated over the network, and the M52 drive reindexed by the iPad software command.
• The M50 can play most all formats of tracks- this means that my own high resolution AIFF tracks from SACD as well as FLAC tracks form HD Tracks and other vendors can be readily installed using the simple folder structure employed (very similar to iTunes- Artist Name, Album Name, tracks and JPEG inside album folder
• It should be possible to setup automated/scripted backups of the M52 fiiles and folders, saving the effort from the CD rips and preventing data loss in the unlikely event that two of three HD's fail simultaneously, or a major failure occurs in the M52 apart from the drives- this will facilitate rebuilding the system quickly.
• Now it would be easy to rip CD's into FLAC externally and copy them to the system, and if preferred, leave the default setup for the internal drive as a memory player for visitor's disks.

All of this really pleases me, and now puts me in a position to write a comprehensive review of the M50/M52 pair for the NAD site that should be more useful for other potential buyers, and give them much needed guidance for how to get from point A to B, and C and D as well!

[JonMarsh]

Re-sampled files optimized for the DCD8

Another aspect of the Brainstorm DCD-8 is how AES-EBU is handled... a single AES-EBU connector normally can transmit stereo signals in balanced mode, but originally it was only designed to work up to 96 kHz in that mode. Above that frequency range, considering timing precision and clock recovery, the work around was to switch to dual wire mode, which supported extending the sampling rate to 192 kHz but wasn't operating in balanced mode. Later, with faster transmission components, full balanced operation to 192 kHz has been added as another mode. A lot of pro gear doesn't support that, because, well, the noise and jitter are higher! It's more often a configuration used for consumer gear to keep things "simpler".

Bottom line, the Brainstorm DCD8 is NOT normally a consumer piece of gear, and so for single wire balanced transmission, it operates up to 96 kHz; it can do pro dual wire mode to 192 kHz, but most consumer DAC's can't



Which brings up an interesting conundrum- what to do with all of those high res recordings I have, mostly at 176.2 kHz sampling rates, but some at 192? While many DACs handle multiple sample rates with only one playback sample rate doing on the fly chip based SRC, that's not really a great solution, unless at least you're going with a DSP solution with some first rate algorithms.

Now, the interesting thing is, the folks with the most first rate algorithms for this in the Industry are Izotope...

https://www.izotope.com

And they sell a variety of pro oriented products and plug ins, but they also license software libraries for key functions like resampling with variable filters and remastering, as well as bit dithering in mastering- my favorite tool producer, Audiofile Engineering, has used their routines in their original Wave Editor program I used to get into SACD capture to PCM, and their newer tool, Triumph, continues that tradition.

http://www.audiofile-engineering.com/triumph/

So, now that I've got the transfer of files to the M52 sorted out in principle, I've started importing the high resolution AIFF and FLAC files and converting them to 88.2 kHz files, using the high quality filter settings (most computationally intensive) to create relatively time domain optimized files with the corner frequency well above the limitations of CD audio. This I think will work out pretty well- Izotop SRC is calculated with very high bit depth, and has excellent characteristics as regards the time domain with minimum pre-ringing and low residual upper band aliasing image, which is strongly suppressed.



On my retina Macbook pro with SSD, this work proceeds fairly quickly- and one upside to the sample rate conversion and using FLAC is that the resulting file size on a long album like Hiromi "Sprial" is now only about 1.15 GB in size, instead of 4 GB. This seems to me to be a good trade-off between quality and file size; as good as even CD sounds on the TotalDAC-D1 or M51, I suspect that going to 24 bit and 88 kHz is really as far as I need to go, considering my own needs. Just may be the sweet spot.

Triumph is available on the Mac App store, and is very reasonably priced for what it does- $79. Actually, it would be a bargain at twice the price...

[JonMarsh]

OK- spent some time creating 88.2/24 FLAC tracks from 176.4 kHz albums, and upload 4, plus some other artwork updates- Things are working as expected, copy time over wired network connection is fairly reasonable, and as I post this I'm listening to "Spiral" by Hiromi - note the HD designation; when it's at CD resolution, (as all the ripped CD material is of course) it just says "CD".