Re: Audio Op Amp power

Clifford Heath wrote:
Winfield wrote:
For example, the Creative USB Sound Blaster, Audigy 2 NX,
(model SB0300) has two stereo 24-bit A/D inputs and both
USB and optical outputs, and meets the ADIO standards.
USB Sound Blaster Live! may be another possibility.

How well do these USB widgets work in the unavoidable
presence of ground noise?

The 24-bit A-D's used in the E-MU and Creative products have
differential inputs, and this type of circuit connection can
be continued all the way back to the input, but I don't know
whether the E-MU and Creative products have done so. My gut
feeling is they have a better chance of making quiet preamp
circuits in USB modules, compared to PCI-bus boards.

But I should report that E-Mu's 1212 PCI-card stereo A/D type
is working well for us in an extremely-sensitive experiment.
BTW, the E-MU 1212 uses AKM's ak5394 24-bit 192kHz A-D chip,
http://www.asahi-kasei.co.jp/akm/en/product/ak5394a/ak5394a.html
Our PC is a Lenovo (i.e. formerly IBM) minitower.

.

Relevant Pages

  • Re: Laptop for music only
    ... My requirements for such a dedicated laptop are modest: ... Also, the only stumbling block to the low price is possibly USB 2.0, ... The best ways would be to output digitally via S/PDIF to a stereo system, or headphones with a quality audio interface. ...
    (rec.music.classical.recordings)
  • Re: USB on stereo question
    ... some new stereos come with a USB connection. ... MP3 player, so you can play the songs from your MP3 player on your ... Is the USB to connect your computer to your stereo, ...
    (sci.electronics.repair)
  • Re: Hard-drive based "cd multichanger"
    ... I have a box of tricks that makes my Mazda's factory stereo think my iPod ... some the Headunits that take USB Pen drives ... I have a set top box that plays divx and MP3 off a USB slot. ...
    (uk.rec.cars.maintenance)
  • PATCH: Convert usb fm radio to V4L2 and move to the right directory.
    ... Could do with the stereo detect wiring in somewhere but I'm ... into both the USB and an analog audio input, ... This program is free software; you can redistribute it and/or modify ... GNU General Public License for more details. ...
    (Linux-Kernel)
  • Re: Using a PC like a "pendrive"
    ... I have a Grundig Hi-fi stereo with an usb port. ...
    (sci.electronics.design)