View Poll Results: Would you be intersted in a USB amp as described?

Voters
26. You may not vote on this poll
  • No, not at all, you can put it where I think!

    3 11.54%
  • Only if it was really cheap, say $50

    10 38.46%
  • Only if it was cheap, about $100

    5 19.23%
  • This is the thing I was born for, send me one now!

    8 30.77%
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Thread: Small and simple USB audio amp anyone?

  1. #21
    DIGItonium
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    That's a very intriguing idea. I wonder what happens when we pair it up with something like this (Wireless USB-network Hub):
    http://www.reghardware.co.uk/2007/04...0211n_usb_hub/

  2. #22
    Constant Bitrate
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    Quote Originally Posted by Chris31 View Post
    You might find this interesting.

    http://cgi.ebay.co.uk/USB-3D-SOUND-C...QQcmdZViewItem

    As for the power amps, there are plenty of good single chip design out there.
    I love it how the description on ebay states it is a "5.1" USB sound card lol.....I never knew you could get 5.1 sound out of a single 3.5mm jack lol

    USB sound is quite feasible and probably a good idea to to simplyfy everything!

    I am 100% interested in this idea and would like to buy one IF you can create one before I get my car and/or a good deal on a 4/6 channel amplifier!!

  3. #23
    cheap custom title JC-S60's Avatar
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    Quote Originally Posted by durwood View Post
    I think this is a great idea! People want simple and small and easy to use. I can see definite value in something like this because I see people asking all the time for a simple amp solution and don't want to do the HU or amp. With all the new cheap efficient amp designs out there, I think this is totally feasible. I personally wouldn't buy one because it wouldn't fit my needs, but anyone who wants a simple soultion should be drooling over this.

    I'd say keep it within $50-100 probably $75-100 would be a good place to shoot.

    I imagine as with your other projects, it would come preassembled? No building required right?
    It would come assembled and tested - as simple to install as possible (ISO plug for power/speakers/ignition), and the price would be in that range I hope (need to find out some more details before I'm sure).

    Thanks for your input,
    Joachim

  4. #24
    cheap custom title JC-S60's Avatar
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    Quote Originally Posted by DIGItonium View Post
    That's a very intriguing idea. I wonder what happens when we pair it up with something like this (Wireless USB-network Hub):
    http://www.reghardware.co.uk/2007/04...0211n_usb_hub/
    You could use that I guess, although you'd only need one USB cable from your PC to the amp.

    Joachim

  5. #25
    cheap custom title JC-S60's Avatar
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    Even though there is not much reaction, we will develop a prototype soon, just so you all know

  6. #26
    Newbie
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    I would be very interested, but I would need something that is at least 2.1 capable. What sort of OpAmps would you be looking at? The 4562's are excellent and very reasonable.

  7. #27
    Constant Bitrate
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    Count me in, I am interested too, but I need 4 channel output at minimum and a line out, so I can hook up an external amplifier if I need to drive more speakers or subwoofer

  8. #28
    Low Bitrate benedums's Avatar
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    I think this would be very doable,
    I have thought about designing a USB-amp using the TAA4100A and CM106L chips.

    The TAA4100A is the Tripath 4x100 and the CM106L is a USB audio chip (the same one used in the Turtle Beach Audio Advantage Roadie.

    The USB chip also has SPDIF in/out, Stereo Mic in, Analog lin in/out, volume control (could connect to analog volume switch like steering wheel contols), C-Media software drivers, 2-8 channel support.

    Here are links to the datasheets;

    TAA1004A

    CM106-F/L

    Both dataseets have application circuits (reference designs) and should work together, I think.
    Sailin
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  9. #29
    cheap custom title JC-S60's Avatar
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    Quote Originally Posted by Pockets View Post
    I would be very interested, but I would need something that is at least 2.1 capable. What sort of OpAmps would you be looking at? The 4562's are excellent and very reasonable.
    2.1 would be possible, we're going to integrate a line-out you can connect to a separate sub-amp.

    Not sure what op-amps are going in there yet...

    Joachim

  10. #30
    cheap custom title JC-S60's Avatar
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    Quote Originally Posted by BiG K View Post
    Count me in, I am interested too, but I need 4 channel output at minimum and a line out, so I can hook up an external amplifier if I need to drive more speakers or subwoofer
    Your wish is our command It will have 4 speaker level outputs and stereo line-out.

    The computer will only see 2 channels though (limits of the usb speaker choice), but you can adjust the gain on the amp for all channels separately.

    Joachim

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