Following up on my original post about the Rode PodCaster option; I've been playing with mine for a few weeks now and am absolutely loving the Aphex module. The voice output from the Podcaster with High Pass Filter, Noise Gate, De-esser and compresser enabled, and the Aphex module gives it that extra low and upper end. Really gives you that sultry late-night radio voice. I'm using it with a Rode NT1-A as well, and it has a built in profile for that specific microphone, and phantom power, of course.
Ive been using it to do recordings all week and the USB input/output straight into the PC is excellent, i've actually ditched my Focusrite 2i2 for my PC and just use the Podcaster instead. The speaker/monitor out is perfect for that.
Plugging the headphone in doesnt mute the speakers, but the speaker and headphone volume controls are right next to each other. Very convenient. You can also configure automatically muting the output whenever a channel slider is turned up, ensuring you don’t experience feedback while using monitors. Turning the mic level up will mute the speakers. Handy.
Overall, I'm loving it. If you can get a cheap one on eBay I think it would do what dave needs. (I scored mine for about 400)