Best USB sound and midi module including Phantom mic input !

[brucek]

You have a line level RCA out which you would want to route to a balanced mic level in.

Oh, you're talking about measuring the mic stage (not the preamp stage). Yeah, you can't really do that.

brucek

[m-fine]

brucek wrote:

Oh, you're talking about measuring the mic stage (not the preamp stage). Yeah, you can't really do that.

brucek

It CAN be done, it just is not easy

After thinking about it for a while, I think I can do it with my DCX. I can go into the behringer with the RCA to XLR cable, then go out (no filters) balanced to the mic in. I can also come out of the behringer to an unbalanced line in to control for the response errors of the DCX. I know the behringer can handle unbalanced inputs and both balanced and unbalanced output so that just might do the trick.

I am sure you could also make a relatively simple circuit board to convert the unbalaced out to balanced but I am not sure if that would introduce any significant error.

All this to get a precise measurement at 6 or 7 hz where no EQ I know of can be used to tune the signal anyway

[WmAx]

Another similar product, just as an option, with MIDI support and phantom mic power is the E-MU 0404USB. This product has reference quality measured behaviors(s) to boot, as verified by [1]3rd party measurements. In addition, the 0404USB device can be used without a computer as high quality stand-alone mic-preamp and/or ADC or DAC, with both coaxial and optical digital I/Os.

-Chris

Footnotes
[1]E-MU 0404 USB - A Top-Class External Audio Interface
http://www.digit-life.com/articles2/...-0404-usb.html

[JohnM]

The ART dualPre looks like it could also be an economical option for a soundcard/mic preamp with phantom power, though it does not have any midi features. With independent left/right input gains it would allow straightforward line level loopback for the reference channel. The "monitor" outputs carry the signal from the PC/Mac when the mix knob is turned fully to the "Computer" position. http://www.sweetwater.com/store/detail/USBDualPre