Lefties — it's quite ambidextrous, the switches are at the right side, but it is not irritating, you use them in the beginning of the session anyway. The U-22 sports XLR/TRS combo input connectivity into which a mic can be plugged, or alternatively a line-level source. Hi-Z support means that you can even connect a guitar or bass. The stereo input also lets you record an iPad or any other portable audio device. Direct Monitoring Support

With mobile recording becoming more and more viable these days, it's becoming increasingly important for aspiring singer/songwriters to have the correct gear at their disposal within a moments notice. If only there was an affordable,small and lightweight USB audio interface that can be connected to your phone / tablet / laptop to help you record those moments of sudden inspiration on the fly... Not only is the U-22 a must-have for mobile recording, but it makes the perfect audio companion for musicians who like to incorporate digital audio or pre-recorded sound into their live shows. Simply connect the U-22 to a laptop or phone/tablet, open up software effects or a looper, and send the processed signal to a mixer or the house PA via RCA stereo outputs! USB: USB 3.0/USB 2.0 (Only USB host controllers with Intel Chipsets are supported. Operation is not guaranteed when used with USB hubs or expansion cards) Power Source: USB bus power (Type B) - Zoom AD-17 (Micro-B) - DC 5V power supply (Micro-B) - 2 AA batteries (About 5 hours continuous operation with phantom power off) I love the flexibility to play electric guitar outdoors (a passive one) with this device and a pair of headphones. Great tone detail!

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no gain headroom for a condenser mic —it produces somewhat quiet recordings that need normalization. Overall, not a bad product at all, much better reliability & quality than similar behringer products. I got this during the great indian sale week, so it was discounted. Presently the MSRP for this product is very high, around Rs.9k, its not worth it at that price but at around 6k it's okay. Power Source: USB bus power (Type B), Zoom AD-17 (Micro-B), DC 5v Power Supply (Micro-B), 2 x AA battereis (approx 5-hours continuous operation with phantom power off)

We also wanted to be "future-proof" in using these for other projects in the classrooms, such as video voice-overs, music production, and so on. The other features of the U-22 were not needed at this time, such as the optional 5V power input, RCA out, iOS support, or the link to Ableton Live Lite, but it's nice to know they're there.Having a flexible 2-channel audio interface that you can throw in a gig bag, has almost become a necessity for engineers and musicians alike. The Zoom U-22 is aiming at this market and could be one of the most compact options available. By offering the option to be USB bus-powered or powered from batteries, it also permits the interface to be used anywhere. This could be one of the most convenient solutions yet for recording a high-quality mic onto your iPad, in the middle of nowhere. Recording guitar and dynamic microphone is a straight forward job. The gain knob is around 6-7. I got mixed results with AKG P220 condenser, some nice, even though quiet, recordings in the studio and a lot of hiss outdoors "in a quiet forest". The gain is around 8. I bet it will benefit from a signal booster device. Unfortunately I didn't use it extensively — my audio projects are on hold for the moment. Thus means I haven't tried the line-in feature.