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CD-ROM Drives that Can Be Used as Standalone Players?

An anonymous reader asks: "I am using an older, standalone CD-ROM drive as my audio CD player in my sound system. It is a NEC 4X SCSI in a small case with power supply. The case outputs very clean analog audio, great headphone output and a SPDIF coax link which plugs directly into my receiver. It works great standalone, it has a complete front panel, ie backlit LCD display, stop, play, pause, next and previous track buttons. But it doesn't read CD-RW, it uses a caddy and it heats up the CDs quite a bit. I know that all recent CD-ROM drives have only the eject button, not all of them output SPDIF (and with DRM who knows what the future holds) and who knows if they will work with only the power connected? Which CD-ROM drives, old or new, support being used standalone, have a decent set of front panel controls (at least a play and a skip button) and output SPDIF?" Generally for this type of purpose, I'd use a regular old portable CD player, but these generally do not output to SPDIF, either. Has anyone managed to find decent examples of either piece of hardware?

55 comments

  1. Use a damn cd player! by Cyclone66 · · Score: 3

    Get a CD Component piece for you system or at least look at some models of players, I know my Sony CD player had an optical output and that model was a few years old.

    1. Re:Use a damn cd player! by Apreche · · Score: 1

      I agree. Why use a CD-ROM to play cds when you can get *gasp* a cd player? it's a new invention! They even have mp3 ones now. And they have some that hold multiple cds. Some even have two lasers so you can copy cds. Indeed, Sony does make quite a few quality ones.

      --
      The GeekNights podcast is going strong. Listen!
    2. Re:Use a damn cd player! by isorox · · Score: 3, Interesting

      I just use my DVD player (which does mp3 cd's fine, has digital out and cost less then $150 18 months ago). I was impressed by my parents new midi system - 5 CD changer, reads file names, file/directory navigation, etc. etc. For now I'm happy with my DVD player, but were I into music large scale, I'd definatly invest in a proper CD deck.

      Why anyone would spend $50+ on a high end CDROM drive is beyond belief!

  2. Dear slashdot by Anonymous Coward · · Score: 5, Funny

    Hello slashdot. I have a great vcr that takes beta tapes. It has Beta I-III speeds and works great. The problem is it doesn't play dvd's. I've looked and looked but can't find a beta player that plays dvd's. Does anyone know where I can get a beta vcr that plays dvds?

  3. Um, more info please! by Anonymous Coward · · Score: 0

    Ok well there must be some reason you want to go with a CD-ROM instead of just a normal stand alone Cd Player. So uh, tell us, what exactly is your reasoning?

  4. My experience... by BSDevil · · Score: 4, Informative

    I've got this great little thngy I use to play my CDs. The case outputs very clean analog audio, great headphone output and a SPDIF coax link which plugs directly into my receiver. It works great standalone, it has a complete front panel, ie backlit LCD display, stop, play, pause, next and previous track buttons. It has a cabeled remote, plays CD-RWs wonderfully, and dosen't heat up. It can run directly with only a power supply, and can even run without the power supply if needed!

    Know what? It's a Sony D-EJ815 Discman.

    --
    Cue The Sun...
    1. Re:My experience... by Anonymous Coward · · Score: 0

      Know what? Sony sucks. Their hardware is flaky, customer support is shit, and getting parts is a pain. I already have a Discman. It's flimsy as hell, and it moves around when you try to use it as a component, eg opening the clam shell takes two hands as the damn thing is too light to offer any resistance.
      And it skips for no reason. ESP you say? Did you know that ESP compresses the audio so it fits in the memory? That's why there's no SPDIF output when ESP kicks in!
      So all the 'clean audio' goes out the window!
      Plus it's only optical out, my receiver's optical input is already taken by the Minidisc.
      Optical switchbox you say? Did you know those things are merely a plastic fiber that is physically moved from one port to the other? As the plastic detents wear out, the alignment goes out the window and the light level drops. So no thanks for that.
      Plus as a portable it absolutely sucks, it skips when I breathe on it, and the supplied NiMH's are the worst I've ever seen. Get new ones you say? Sure, but then I have to cut off the bottom of the plastic sleeve on one of them so the Discman's advanced battery sensor (hint: it's a switch) can detect them. *I* have to work to support Sony's clumsy engineering? No thanks.
      So keep supporting Sony, I'll recycle quality CD-ROMs from the past, alright?

  5. old rat shack RS-3400 has spdif by TheGratefulNet · · Score: 3, Informative

    the old portable 'clam-shell' has all you want for the audio end but spdif out, right?

    if you could find a used (ebay, maybe) radio shack cd3400 portable you might be happy. the line outs were supposed to be some wicked clean and accurate signal. and it had a 1/8" mono jack for coax spdif out.

    we (dat-heads, back in 1994 era) loved this deck, except for its clicking in the phones out. if you don't insist on perfect phones out and really care more about the line out and the spdif out, this is your deck.

    google cache search result

    now go hunt one down.

    --

    --
    "It is now safe to switch off your computer."
  6. Well then. by NegativeK · · Score: 1, Informative

    Seeing as every other response to this question is satirical or doubtful, I'll try to go against the grain. =p While I've yet to own a drive with SPDIF, I can assure you that the CD-ROMs with only an eject button aren't the only thing on the market. My current ASUS 32x12x40x cd-burner has a play/next track button, and a stop/eject button on the face plate.. It also has a volume knob and a 1/8" jack. And, these features are the exact same on my parent's recently purchased cheapo CD-ROM. Also, they don't require anything but the power connector to work; I've checked them both.

    Of course, both of these drives lack SPDIF, and neither have the LCD screen. But then again, I didn't even try looking for 'em. o.O

    --
    This statement is false.
  7. 52x no-name by Anonymous Coward · · Score: 0

    I had a cheapo "52x" (it was about the only marking on the drive) IDE CD-ROM that had both a play+pause, and prev/next keys right on the front. I don't know if the drive would work without being connected to a PC *at all*, but it certainly had no trouble playing discs by itself, even if I were sitting in the BIOS.

    It didn't have any special software, and if you accessed the drive in any way from the PC, it would reset if you had used the drive's keys to play a CD.

    It had SPDIF outputs, but I don't know how "clean" the audio was (audio playing was not its primary purpose)

    I believe I had originally picked up the drive at a local best buy for $30 or so.. this was 3-4 years back...

  8. In Soviet Russia... by I'm+not+a+script,+da · · Score: 0

    CD plays you!

  9. Creative Infra by malraid · · Score: 1

    I've seen a setup where they took a Creative Labs Infra CD-ROM drive (It includes a remote control) It was hooked to a 12V supply and they took the digital audio out and they plugged it directly into a sound receiver. I don't remembrer more details, sorry.

    --
    please excuse my apathy
    1. Re:Creative Infra by isorox · · Score: 4, Informative

      Many moons ago, in the dark ages, I obtained a semi-broken iNFRA54 creative cd rom drive. It has
      1) Earphones output
      2) volume (up/down buttons)
      3) Remote with numbered buttons etc.
      4) play/next/rewind/prev buttons
      5) Stop/eject button
      6) Mode button (?)
      7) Windows software which enables the remote to be a mouse etc.

      On the back is a normal large 12V/5V/GND power socket, IDE port, master/slave jumper, analog audio out and didgatl audio out (2 pin cable thing).

      The thing the laser sits on and moves kept sticking whenthe case was on though, but worked ok with the case off.
      As mentioned elsewhere, a cheap AT power supply would work it great, I bet ebay as a few. Dunno if the digital out is the same as a coaxial digital out on DVD's and tuners etc.

    2. Re:Creative Infra by i_am_nitrogen · · Score: 1

      The digital out on a CD-ROM drive is probably TTL level (0-5v). I believe SPDIF is 0-0.5v. You'd want to reduce the power of the signal before connecting it directly to a receiver.

  10. Some VHS decks do play DVDs by yerricde · · Score: 1

    Does anyone know where I can get a beta vcr that plays dvds?

    I don't know if anybody makes a Betamax/DVD combo deck, but I do know where you can get some VHS decks that play DVD Video discs.

    --
    Will I retire or break 10K?
  11. Wah!?!? by Anonymous Coward · · Score: 0

    Not a question for Slashdot... One wonders about the editors of these submissions!

    Dude buy a highend single disc DVD player with optical or coaxial output. Shop around many support multiple disc types. A quick search at Crutchfield (not the cheapest but a nice selection):

    Sony CDP-XE270 Single-CD Player $119.99
    Audio Redbook CD's, CD-R's, CD-RW, optical digital out 1-bit D/A converters, signal to noise 102 dB.

    Home audio CD recorders can be had for a little more than twice the price of a single disc player. Support writing to CD-R/CD-RW.

    Heck you can get a JVC 200 CD Changer for just $179.99 and I am sure you can find it cheaper. (yup it's got optical digital output).

    SPDIF is nothing but a smaller connector for Fiber Optic or a Shielded Coax connection. Just about all DVD/CD players have it now. Quality Monster (brandname) patch cables for FiberOptic or Coax go for around $50.00,

  12. It's a bit of a hack... by ActiveSX · · Score: 2, Informative
  13. Non an answer to the question by edbarrett · · Score: 1

    But something I've been lusting after since I found out about them last year or so: an Apple PowerCD. I don't have any idea if it would be useful at all to you, but hey, I'm still geeked I moved up from a Quadra 840AV to a PowerMac 7600/132 (look 'em up on Apple History if you want links) :)

  14. About the SDPIF by TwistedKestrel · · Score: 4, Interesting

    Actually, I've never owned a CD-ROM that *didn't* output SDPIF (sp?). The Creative 12x DVD and AOpen 20x10x40 both have it on my computer, the dead CDROM in my tiny server has it ... no, wait, I have a crazy old Panasonic drive that doesn't have it, but it doesn't support IDE either. It's one of dem crazy weird buses. ANYWAY, my point is that most CDROMs have a two pin "digital output" on the far left side, and that is a SDPIF output. With a little creative wiring, you should be able to hook it into a stereo. And I believe most IDE CDROMs work with only power. Of course, I'm talking internal drives here but you should be able to hammer something together.

  15. Comic Book Guy sez: by Wakko+Warner · · Score: 0, Redundant

    Worst.

    Ask Slashdot.

    Ever.

    - A.P.

    --
    "Remember when the U.S. had a drug problem, and then we declared a War On Drugs, and now you can't buy drugs anymore?"
    1. Re:Comic Book Guy sez: by unitron · · Score: 2

      Tell Comic Book Guy if he don't like it to read something else and leave it for those who do find it interesting, and who definitely find it more interesting than his whining.

      --

      I see even classic Slashdot is now pretty much unusable on dial up anymore.

    2. Re:Comic Book Guy sez: by Anonymous Coward · · Score: 0

      You found this bullshit interesting?

      What a freak. Are you a cheap-ass bastard too?

  16. Yay! by Anonymous Coward · · Score: 3, Informative

    I guess it's finally my turn to feel the thrill of seeing my 'ask slashdot' question posted, and feel the wrath of the kiddies slamming me! Yay! I feel like I'm part of the gang now!
    OK, let me clarify. I used to have a decent A/V system years ago, consisting of a stereo VCR, Laserdisc player with optical SPDIF, carousel CD player and Minidisc recorder. I got most of it stolen 6 years ago, leaving me with only CDs and my Minidisc recorder (MZ-1).
    This left me somewhat bitter and paranoid. Eventually I bought a Sony portable CD player with optical SPDIF output, the D-E805.
    It's a piece of crap, it skips randomly on my CDs, which all look like masters, ie there's not a scratch or speck of dust on them, and this even on a stable surface with the AC adapter. And we all know about how wall warts take up too much space on a power bar, right?
    One day I'm at a used computer store and spot a nice NEC external CD ROM case with internal power supply. I figure for 30$ canadian I can do something with this, thinking the 4X SCSI CD ROM is going to fly in the garbage. At home, I realize the headphone output on it sounds better than most Walkmans I've had, the analog line outs are dead quiet (except for the music, of course :) ) , as quiet as I'd want, really, and the coax SPDIF output went straight into the previously unused coax input on my receiver.
    Plus the CD ROM itself is unusual for the complete control panel and LCD display on it. Like I said, most CD-ROMS have an eject button, if that.
    All in all, I was so impressed with this thing, it became my main CD player. The fact that it's only 7 inches wide by 12 inches deep was pretty cool too. It's also a neat conversation piece as I discovered.
    I don't want a standard 19 inch wide CD player. Those things are flimsy, empty boxes. I don't see why this size still exists.
    I'd have thought that at /. the hacker mentality would prevail. I thought people would be happy that I'm recycling a useful, if old, CD-ROM player as a standalone CD player.
    The fact that it's smaller, uses a standard 120V power connection and only needs one cable to connect to the receiver are the reasons why I like it.
    It raises the question why CD-ROMs don't play back MP3's natively, most DVD players seem to do it. That would be even cooler.
    So no, I don't want to connect a portable CD player to my receiver. BTDT. I don't watch enough movies to justify a DVD player (another 19 inch empty box). I like the small form factor, OK? I want a newer CD-ROM that plays CD-RW and has enough buttons for standalone use, OK?
    Yes I called all the local big boys in Montreal for computer crap, there simply are NO CD-ROMs with anything more than an eject button, OK?

    And yes, I use my computer for ripping and playing MP3s and the occasional DVD, I just don't want to have to turn on the damn machine (at 200+ watts and fans) just to listen to some music. The NEC is quiet and fast.

    That's all I want for crying out loud. I just want CD-RW read capability with buttons... Waahhh!!!

    Oh and yes, I used to use my Hi-Fi stereo VCR to record 6 hours of music at a time, have you seen the specs of these machines lately?

    Thanks to isorox and malraid for some of the only relevant posts so far!

  17. OT: 1-bit dacs and Monster Cable by i_am_nitrogen · · Score: 2, Insightful

    How do you play a 16-bit PCM stream with a 1-bit DAC? It's not like SACD where you have a ~2.5MHz 1-bit stream. So what exactly does it mean to have a 1-bit DAC?

    Additionally, there is absolutely NO reason to ever buy anything but the cheapest digital audio cable. Why? It's DIGITAL! If there's degradation of any kind, you'd hear it extremly well. There aren't multiple levels degredation. It's either total signal loss/corruption, or perfect signal. Just buy the cheapest cable you can find that works. Heck, for coax digital, even a cheap composite video cable would work. An audio cable might work, but it might not have enough bandwidth. A composite video signal needs about the same bandwidth as a digital audio signal. For optical cables, you'll want to find something that isn't going to snap if you drop it while you're installing it. There's a new method for making plastic optical conduits, that have a smaller minimum bend radius than the current cables.

    1. Re:OT: 1-bit dacs and Monster Cable by samjam · · Score: 3, Informative

      You are quite wrong of course, but pretty correct in your point; as long as the signal doesn't degrade to the point of uncertainty where the signal level is close to the data threshold such that noise will cause bits to be at the wrong side of the threshold; as long as the signal doesn't degrade THAT FAR, the signal will be fine. But once the signal does degrade that far you might find a better quality cable will reduce the degradation enough for it not to be an issue.

      Does this happen in real life with digital signals?

      Sure it does, why do people make sure they get good quality IDE cables (esp. for UDMA), why do we need good quality network cables and connections?

      It is true that the lower the data rate the signal will be less susceptable to cheaper cables; but don't be deceived into thinking it doesn't matter; especially in cases where impedance matching is important, or good sheilding is important (to protect the equipment as well as the signal; many a badly designed device has locked up in a damaging mode because of bad signals - this is what the FCC regulations regarding "must be able to accept ... interference' refers to I believe).

      Sam

    2. Re:OT: 1-bit dacs and Monster Cable by WasterDave · · Score: 3, Interesting

      Sure it does, why do people make sure they get good quality IDE cables (esp. for UDMA), why do we need good quality network cables and connections?

      I think you'll find that for one pretty well anything will work for 100base-T. Gig is different, but you'll get away with murder at 100Mbit. And secondly that SPDIF is a far lower data rate than either. You could send the signals over a coat hanger and still have no appreciable loss.

      Dave

      --
      I write a blog now, you should be afraid.
    3. Re:OT: 1-bit dacs and Monster Cable by TheGratefulNet · · Score: 2

      yes, but only if its a 75ohm unbalanced coathanger with approved connectors.

      --

      --
      "It is now safe to switch off your computer."
    4. Re:OT: 1-bit dacs and Monster Cable by samjam · · Score: 2

      No doubt many things will work for 100 Base T, but maybe you won't get the full data rate with the retransmissions that are likely to occur; and the number of errors and re-transmissions depends a lot on the environment and external interferance.

      If there are a lot of retransmissions you may find on a busy network that you get ethernet melt-down (due to data collisions cos of the amount of traffic) a lot sooner than you would have done with decent cable and connectors.

      Does spidf re-transmit on error? or do you have to hope the error wasn't so great it can't be corrected?

      Are you going to wait till your neighbour starts arc-welding before you replace the coat hanger with a decent spidf cable?

      Cables quality does matter, _even_if_ low quality cables work somewhat.

      Having said that, I don't buy monster cables either, I merely imagine what I may be losing.

      Sam

    5. Re:OT: 1-bit dacs and Monster Cable by unitron · · Score: 2

      Where are you getting 75 Ohm coathangers? All I can find locally are 50 Ohm. Of course if you can get 75 Ohm hangers they can be converted from single end driven unbalanced to both ends driven balanced 300 Ohm. But then you can't use an inline SWR meter to tune it.

      --

      I see even classic Slashdot is now pretty much unusable on dial up anymore.

    6. Re:OT: 1-bit dacs and Monster Cable by retep · · Score: 1

      Try running 100Base-T over untwisted cables... If you screw up while making your own it's a pretty easy thing to end up doing, where each line pair should go isn't obvious, you need the proper wiring diagram. I've done this and while for short runs of 10-15 ft it still works your connect degrads pretty quickly if you do anything longer or have any source of noise. (like the large shortwave radio transmitter close to work...)

    7. Re:OT: 1-bit dacs and Monster Cable by megabeck42 · · Score: 2, Interesting

      Speaking of which, I run SPDIF between my pc and my receiver over a 50 foot length of speaker wire that I terminated with el-cheapo radioshack rca plugs. You can tell when it loses sync, 'cause the receiver will cut out for a moment and display "PCM 48Khz" briefly. Otherwise, it works well.

      --
      fnord.
    8. Re:OT: 1-bit dacs and Monster Cable by WasterDave · · Score: 2

      Maybe you should try twisting it. If it only craps out occasionally, the marginal improvement due to twisting the pairs might be enough to do the job.

      Dave

      --
      I write a blog now, you should be afraid.
  18. I have to ask... by WIAKywbfatw · · Score: 1, Flamebait

    What the hell is this "SDPIF" that you keep going on about?

    I've heard of SPDIF - Sony Philips Digital Interface - but I can't find any info online on this new-fangled interface that you've got on your Creative and AOpen drives.

    Could you please elaborate with some detailed technical information for the less enlightened amongst us?

    --

    "Accept that some days you are the pigeon, and some days you are the statue." - David Brent, Wernham Hogg
  19. Second time I see this kind of question in a week by BigJim.fr · · Score: 3, Informative

    Another guy wants to recycle a CDROM player in his audio set. Seen on the debian-user list : http://lists.debian.org/debian-user/2003/debian-us er-200301/msg00942.html Better get yourself a used CD player on Ebay !

  20. CD copy control by NaveWeiss · · Score: 2, Informative

    The problem with computer CD drives is that they won't work with the current copy control methods, like Midbar (=desert in Hebrew) or Sony's vicious key2audio - unless someone writes a firmware upgrade for them.

    The upgrade should be very simple, and will consist of the following pseudo-code:

    IF (cd is printed) AND (cd has audio tracks) THEN read_only_the_first_session

    --
    Slashdot community, please notice: I am looking for a girlfriend.
    Nave H. Weiss
  21. Sarcasm by moc.tfosorcimgllib · · Score: 1

    Kids these days...

  22. Buy 2 drives by Anonymous Coward · · Score: 0



    You fucking retard!

    1. Re:Buy 2 drives by Anonymous Coward · · Score: 0

      Hi, I'm the fucking retard who posted the question. Will buying two drives make a full control panel appear on one of the drives? If so, how? Which models do I need to buy for this to happen?
      Looking forward to hear from you...

  23. MP3 hardware decompression by mnmn · · Score: 2

    I have tested many joe CD-ROM drives by just putting in an audio CD-R, power suply and listening thru SPDIF. I havent seen many drives without an SPDIF out and I believe about 90% will play audio off CDRs with no major problems.

    Now they should REALLY make CDROM drives with build in MP3 and Ogg decompression. These modular drives could then be inserted into car and home theatre players with no problems. I certainly wouldnt mind paying extra to have mp3 processing off my processor.

    --
    "Give orange me give eat orange me eat orange give me eat orange give me you." -Nim Chimpsky
  24. MODERATORS... by Anonymous Coward · · Score: 0

    Have a sense of humor. Please!

    It's obvious that this is meant to be ironic, so why mod it down as flamebait?

    1. Re:MODERATORS... by TwistedKestrel · · Score: 1

      I agree. I took no offense at the post, I don't believe it was intended that way. Although I did try hard for a while to make up an abbreviation for SDPIF :P.

    2. Re:MODERATORS... by Anonymous Coward · · Score: 0

      Super Demonic Penis Inflation Fungus?

  25. My NEC 3x by TitleSeventeen · · Score: 0, Flamebait

    i have an old NEC 3x cd rom drive that works good as a standalone, it has RCA out and headfone out, it also uses the ghetto caddys, wether it plays CD-RWs, i don't know b/c i have a real cd player that incidently dosen't play cd rws

    1. Re:My NEC 3x by Anonymous Coward · · Score: 0

      How is this flamebait? Original story poster here, requesting the MOCs change the mod here OK?

    2. Re:My NEC 3x by TitleSeventeen · · Score: 0

      that suprised me too, i still can't figgure out how this is flamebait.

  26. I Think I Know What He Means by Anonymous Coward · · Score: 0
    Please mod up, this is one of the few serious replies - thanks.

    From what I've seen CDROM drives with a full control panel are as rare as rocking horse droppings, so I have an alternative suggestion. One of the earlier posts has shown us how to get at the digital audio out so all we need is someone far better at logic than me to design a control panel for the CDROM which connects to the IDE interface.


    If we have a control panel with display and an IDE interface then users can make use of either the digital out or audio out and make their own CD players.


    Anybody out there with PIC programing knowledge care to take this on ?

  27. WHY WASTE YOUR TIME???? by Anonymous Coward · · Score: 0

    They make these things called audio CD players.. you can hook one of those up to most stereos. I know it sounds hard to believe, but they really do exist. I've seen them!

    1. Re:WHY WASTE YOUR TIME???? by Anonymous Coward · · Score: 0

      Really? So what's the market for DVD players on PCs for? There's this thing called a standalone DVD player, so why is there such a thing as a Hollywood Plus hardware DVD decoder card?
      I know, *I*'m the idiot, and only you are the smart one!
      Lucky guy!

    2. Re:WHY WASTE YOUR TIME???? by cbreaker · · Score: 1

      Well actually... you could theoretically have a distribution of software or an archive on a DVD.

      We don't see too much software distributed on DVD's YET, but once DVD players in the PC are as common as CD-ROM drives, we'll see them.

      For now, we can play movies on the PC. And when your favorite software is distributed on DVD, you'll be glad that you already have a DVD-ROM drive in your machine. In a few years, we may even be able to install RedHat from two DVD's instead of 15 CD's.

      --
      - It's not the Macs I hate. It's Digg users. -
  28. They make these things called cd changers by JBFrobozz · · Score: 1

    You could always just buy a cd player. If you want the nice hook ups you could buy one of the $39 DVD players. Things like this were intended to be plugged into stereos.

    --
    -It writes, rates, creates, even telecommunicates. Costs less, does more the Commodore 64. Compute's Gazette
  29. Re:Yay! [mod parent up] by Spamlent+Green · · Score: 1

    someone please mod the parent up, as it provides more background for the original question. (assuming anyone would care to actually respond to this guy instead of flaming him...)

  30. The analog isn't clean... by Anonymous Coward · · Score: 0

    Clean analog from a CDROM drive. That seems unlikely. That's where stereo manufacturers spend most of their money to get you good signal.

    1. Re:The analog isn't clean... by Anonymous Coward · · Score: 0

      Look, most of the noise in a CD-ROM that's in a computer comes from the REST of the computer. Trust me, my external CD-ROMs have as little noise as can be. Are you one of those 'golden eared' audiph00l$ ?? Then I guess I'd need pure silver internal wiring with a straight signal path and some vacuum tubes to impress you.

  31. Hi, fucking retard here! by Anonymous Coward · · Score: 0

    Original poster here again. Take a look at these eBay auctions to see what my drives look like.
    Not used so much
    This is the one I use.
    As you can see, they go for like 10$. Trust me, the 4X machine is built better than any of the crap standalone "Made in China" specials people have recommended so far. The 3X is too flaky, it's built in a strange way, but lots of fun to look at inside.
    The 4X has analog and SPDIF out, the 3X only SPDIF.