I use a Core-Sound Mic 2496 a/d convertor. It is 24 bit and configurable with toggle switch settings for 44.1/48.0/88.2/96.0 or internally re-configured to allow 192.0 if you have a recorder that accepts that rate. I am using it with DPA 4061 microphones and love the sound qulaity as it is very transparent sounding. The piece is 9 volt battery powered and runs for about 5 hours on a single battery or if needed i can plug in my 4200 maH battery pack and go for a long time. The Mic 2496 is the size of a pda and is the stealthiest piece I have found at a reasonable price ($549.00) Using this with my Microtrack 24/96 makes for an exceptionally small package to carry to concerts. I run mine using spdif coaxial and the sound quality is very impressive.