On Monday 08 November 2010 11:52:26 Ken Restivo wrote: > On Mon, Nov 08, 2010 at 02:09:35PM +0100, Hans Wilmers wrote: > > On 11/08/2010 08:55 AM, Ken Restivo wrote: > >> A mythical beast, rumored to exist, but never actually seen. Others have > >> tried, but failed, to locate it. I now join the search. This beast is: > >> > >> 1) USB 1.0 "class compliant"-- NOT USB 2.0 -- and thus works with Linux > >> 2) Is well and truly supported by ALSA. > >> 3) Has FOUR outputs and 2-4 inputs, all usable from within JACK, with > >> good professional quality DAC/ADCs. 4) The outputs and inputs are > >> balanced and applicable for low or high impedance (probably with a > >> switch), and have TRS 1/4" jacks or XLR or both. > >> 5) Does not cost an arm and a leg. > >> > >> This does not mean the FastTrack Pro! Sure it SAYS it has 4 channels, > >> but only two are accessible from JACK. I have one and have used it for > >> years, but I now need more outputs. And, also, the output of the "other" > >> 4 channels is just RCAs. I need 4 channels output, USB1.0, > >> 44.1Khz/24bit. I could use a cheap 5:1 home-theater USB fob type > >> interface, but the sound quality would probably suck, and it sure won't > >> give me balanced outs. > >> > >> Does this Unicorn exist? Anyone seen one? > > > > No, but if you can live with 48/16 instead of 24 bit, and with > > RCA-outputs, the (no longer produced) Terratec "Producer Phase24 USB" > > does the trick. I just tested this. It might just be that the Terratec > > "DMX 6Fire USB" works the same way, but somebody else should confirm > > that. > > > > Btw.: Did you try the FastTrack Pro with 48/16? Choosing between 48/24 > > and 48/16 also means choosing between 2 or 6 output channels on my USB > > interface. > > I use the FastTrack Pro USB live, currently with 44.1k/16 and get only two > output channels that JACK can use. The other two channels show up as a > different ALSA interface, which makes it useless, since JACK can only use > channels that are all in the same interface. This is why I'm looking for a > unit that can do 4 channells output ON THE SAME INTERFACE. This is > important, much moreso than 24 bit support. Can't you use those alsa modules (alsa-out or whatever - memory is dim atm) to bring the other two into the fold? > > -ken all the best, drew _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
