Is there such an animal as a RCA analog to USB converter that works?


So here is my problem, self made I admit.
My present preamp is an Exogal Comet Plus.
This has only one analog input which I am using for input from my phono amp.
Now somehow I would like to also run my cassette tape unit through the system but the ONLY spare input left on the Comet is a USB input.
So my question would be if there is such a thing as a RCA analog to USB converter?
Or could I do something like a passive analog preamp before the Comet that would take the inputs from the phono and the tape to run into the single input of the Comet.
Or are all of those options REALLY bad ideas?
And when I want to play cassette I just swap the input leads directly at the back of the Comet?
Thank you
uberwaltz
George, thanks, but aren’t those things you linked to designed to interface analog signals TO a computer, rather than providing the audio in USB form as if they ARE a computer? The latter being what Uberwaltz would require, as I understand it.

Best regards,
-- Al

I did see the ones George referred to on eBay myself and came to the conclusion they were not quite what I was needing.
I mean they MIGHT work and price was very fair if they DID work but I do rather like the look of the Decware item atm.
Not saying its a cost no object deal but in reality it is going to be about that as it needs to be a sq no object deal, which pretty much equates to the same thing...lol
I mean they MIGHT work...
No, they definitely won’t work. As I said earlier, the necessary device would have to emulate the USB function of a computer, meaning that it would have to act as a USB "host." That is a completely different and much more complex task than acting as a peripheral which communicates with a computer, under the control of the computer.

Also, even if they did work (which they won’t), their A/D converter function would undoubtedly leave much to be desired, from a sonic standpoint.

Best regards,
-- Al

http://www.goldpt.com/sw4.html

Heres a quite nice 4 input Switch box should do the trick too - with room for 3 more sources.

Best of luck

Peter