I would look at the M-Audio stuff, not exactly a mixer as such but the ProFire 610 can be used stand alone and has what you need and as a nice benefit plugs in to your Mac or PC for recording nice and easy. But not exactly cheap at around US$500
Specs:-
up to 24-bit/192kHz for high-definition audio
flexible onboard DSP mixer
2 preamps with award-winning M-Audio Octane™ technology
* phantom power
* 20dB pad on each preamp
* signal/peak LED indicator lights
6 inputs including:
* 2 XLR/TS combo jacks for mics or instrument level inputs
* 2 ¼” TRS balanced line inputs
* stereo S/PDIF in
10 outputs including:
* 8 ¼” TRS balanced line outs
* stereo S/PDIF out
2 ¼” TRS headphone outputs
built-in 1 x 1 MIDI interface
2 FireWire (IEEE 1394) ports
JetPLL jitter elimination technology
standalone operation as 2 mic pre/2-channel A/D-D/A converter
user-assignable master volume knob
powered via FireWire bus or external power supply
half-rack-space form factor fits in Universal Rack Tray
compatible with major audio software including Pro Tools® M-Powered™ 8.0*, Cubase, Logic, Sonar, Live and GarageBand
*Compatible with Pro Tools M-Powered 8.0 with downloadable update. 96kHz maximum with Pro Tools M-Powered. Pro Tools M-Powered 8.0 is a paid upgrade from earlier versions of Pro Tools M-Powered.