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DIAMOND XtremeSound XS51 5.1 Channels 16-bit 48KHz PCI Interface Sound Card

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Learn more about the Diamond Multimedia XtremeSound XS51


XtremeSound XS51

Audio core

Sample Rate
Digital Audio


Line In
Line Out


Operating Systems Supported
Windows 2000/XP
System Requirements
System CPU: AMD Athlon or Intel Pentium 4
CPU Speed: 850 MHZ
System Memory: 1024MB
Hard Disk Space: 20 MB
Available Slot: SINGLE
Chassis: ATX
Monitor: Digital flat-panel (DFP) displays or DVI-I Compatilbe or digital CRT display or High-resolution VGA monitor
Internet Connection: YES


16bit/48KHz Playback

6 Channel Audio Output

Karaoke Support

10 Band Equalizer with Presets

Easy Connection to Home Audio Equipment

Special Effects Including Concert Hall and More

Total DVD Theater Surround Sound Experience

5.1 virtual speaker shifter providing surround sound for CDs, and MP3s

EAX 2.0 and A3D sound support

Physical Spec

11 13/16" x 9 1/8" x 3 1/8"
0.45 lbs.


Package Contents
XS51 Sound Card
Driver Disk

Manufacturer Warranty

One Year Limited
One Year Limited

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the Diamond Multimedia XtremeSound XS51

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  • Darrell W.
  • 3/13/2014 11:52:03 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGood for the price

Pros: Cheap, and easy to install. I'm sure their are much better sounds cards out there, but for this price you can't go wrong.

Cons: Finding drivers can be a bit of a pain if you don't know what your looking for.

Other Thoughts: If you read the comments you can find the drivers with a little effort, and it does work on Windows 7 64bit. I've built 2 rigs using Windows 7 and used this card in both. The first is about 5 years old now, and it still works.

2 out of 2 people found this review helpful. Did you? Yes No

  • Adam L.
  • 12/19/2013 8:28:44 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

1 out of 5 eggsDoesn't work on Windows 7

Pros: None.

Cons: It doesn't work on Windows 7. At all. Somehow I got the sound going (once), but the quality was awful. The rest of the time, silence.

Thinking myself well prepared by the other reviews that mentioned driver issues on Windows 7, I tried the CD drivers, the Diamond website drivers, and the CMI8738/C3DX drivers. Nothing. Also, included for free, the odd behavior of sound files refusing to play, and Youtube videos hitching/freezing/crashing.

I tried emailing Diamond support. After 4 days, they just pointed to the Diamond website drivers. Thanks. Because my original query didn't mention that the Diamond website drivers are faulty or anything.

Other Thoughts: I know it's hard to find a good sound card at this price point. Keep looking.

(I admit, you may have a different experience if you're not running Windows 7, but I can't test that.)

0 out of 4 people found this review helpful. Did you? Yes No

  • Anonymous
  • 7/20/2013 2:29:31 PM
  • Tech Level: High
  • Ownership: more than 1 year

5 out of 5 eggsPlease read, this WILL work in Win7

Pros: I reviewed this back in 2010 but have owned it since 2007-08. It is a flawless card, and has served me well in two different builds over the past six years. Under Vista/7 and above you just have to make sure you install the right driver.

Do a web search for CMI8738/C3DX or to simplify CMI8738. Find the driver for Win7 32 or 64 bit. Extract the files and run the setup. THAT IS ALL YOU NEED TO DO AND IT WILL RUN.

Cons: N/A

Other Thoughts: DO NOT use the included software for Vista, 7 and above. It WILL NOT WORK. Instead do a search for CMI8738/C3DX and download the driver for your OS. It's so easy. Unfortunate to see bad reviews for a product that will most likely serve your needs for years with no issue.

6 out of 6 people found this review helpful. Did you? Yes No

  • Jim M.
  • 1/14/2013 8:26:33 AM
  • Tech Level: Low
  • Ownership: less than 1 day

1 out of 5 eggsNot a good sound card

Pros: none !!!

Cons: software will not install on Windows 7 platform. even the drivers on diamond site will not install !!!

Other Thoughts: Tried to install drivers with disk included & followed the steps on installing card with no success. Setup Instructions do not work at all. Went to diamond site, downloaded the drivers there, & still no success. Kept saying wrong platform / operating system. Went in the software folder, tried to download the Windows 7 drivers by their self, still got same error. Please note, that Diamond use to make awesome sound cards, which worked great, & was easy to install. This series is junk. Do not recommend !!

0 out of 3 people found this review helpful. Did you? Yes No

  • Maksim R.
  • 1/7/2013 4:48:02 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

3 out of 5 eggsSO So

Pros: -Works when it wants

Cons: - very poor driver capability at the time and over the years, did not work in win7, maybe the latest drivers are win 7 com.. but even last year it had issues.
- Not such great sound
- Took time to get it to run (after driver fishing and re-installing

Did you find this review helpful? Yes No

  • Marvin M.
  • 3/8/2012 4:20:50 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year

1 out of 5 eggsJunk

Pros: Cheap and available everywhere.

Cons: Poor Quality and software ... I choose quiet.

2 out of 2 people found this review helpful. Did you? Yes No

  • Travis B.
  • 1/9/2012 7:51:46 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsRandom at Best

Pros: Makes sound when it works. Mic is clear.

Cons: Starts with static and then eventually cuts out completely. Only happens after the computer has been on for a while. I used to turn off the computer and turn it back on to get it to come back to life. Now driver reinstalling, pulling and putting the card back in and checking for updates etc this thing is just more and more random.

Other Thoughts: Want to have mediocre reliability at best , get this. NO thank you C-Media

2 out of 2 people found this review helpful. Did you? Yes No

  • Troy T.
  • 7/7/2011 3:01:39 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsExcellent

Pros: I am more about graphics than audio. All I wanted was a card that worked good enough and had Vista 32bit compatiable drivers. This audio card sounds GREAT! No problem installing the provided drivers AT ALL!

Cons: Does not make toast.

Other Thoughts: Running Vista 32bit with a 2.1 speaker system.

4 out of 5 people found this review helpful. Did you? Yes No

  • Anonymous
  • 9/5/2010 9:43:41 AM
  • Tech Level: High
  • Ownership: more than 1 year

5 out of 5 eggsFor those of you who cannot get this to install in Win7/Vista/etc...

Pros: TL;DR - Read my "other thoughts" if you are looking for a solution. :-)

I've had this sound card since December of 2008 when I realized after finally putting together my then new machine that the onboard audio failed. This card has served me well, working flawlessly on Windows XP 32 and 64-bit, Windows Vista 64-bit, Windows 7 64-bit, and even Ubuntu.

Cons: No 24-bit/96KHz support. However, it is a $20 card, and some people have got it on sale for as cheap as $10 or less, so really... you can't complain. Spend another $10 or so if you want 24-bit. No big deal.

The Diamond XS51 is really a re-badged C-Media card, and this (as you can see) causes much confusion when it comes to finding the right driver. They should update the supplied disc with the right drivers as they are easily available on the Internet. The amount of 32-bit XP users are dwindling, Diamond!

Other Thoughts: If you use any decent hardware monitoring/benchmarking program (such as PC Wizard) you will easily be able to determine who actually makes the chipset upon accessing your sound card info. It is a C-Media Electronics CMI8738/C3DX to be exact. Do a search for that and you will find drivers. To all of you who are frustrated and cannot get this to work, that is your answer. Do not rely on the supplied disc to get you anywhere. Now that you have the model number you should have no problems. I've gotta say though, XP 32-bit, Windows 7 64-bit, and Ubuntu found the driver automatically for me. I do however recall having problems in XP x64 and Vista 64-bit. Not sure why everyone else is running into problems. Perhaps your card is a variant and uses a slightly different chipset? All the more reason to download a free hardware info utility like PC Wizard to see who really makes it and then search for the driver. Hope this helps.

10 out of 11 people found this review helpful. Did you? Yes No

  • Anonymous
  • 8/7/2010 10:14:06 PM
  • Tech Level: High
  • Ownership: less than 1 day

1 out of 5 eggsWorthless

Pros: Cost

Cons: Does not work under Win7

Other Thoughts: I picked up this cheap-o sound card on a whim to replace my onboard sound card. After trying 3 different PCI slots Windows 7 finally acknowledged it's existence, but refused to allow it to be used due to unsigned/expired controls. After rebooting with the card installed in the PCI slot, both Nvidia 9800GT and Radeon 5770 drivers failed to load. Upon removing the card and rebooting, the gfx card drivers were acknowledged and peace restored.

This may work on older windows versions, but not on Seven.

2 out of 4 people found this review helpful. Did you? Yes No

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