One such tool is the Azden FMX-32 Field Mixer. If you are not using a field mixer now, start. They are easy to use and a must in today's video production world. The Azden FMX-32 is an ultra-portable, battery-powered, three-channel solution. It is easy to use with most microphones that feature low-impedance XLR output. The FMX-32 connects to any video camera or audio device that features XLR or mini-jack inputs.
Features like an easy-to-read output level meter and switchable limiter and independent monitor gain really come in handy. I can't state strongly enough how important it is to be able to mix each channel of audio during production, and the FMX-32 makes this possible.
I guess my only knock on the FMX-32 is that it did not come with a strap or external power supply in the box. Both of these gripes are very minor, I understand, but both of these accessories would have been nice to have when I needed them.
For more information about production improvements--audio and video--in an HD world, keep your eye out for EventDV's upcoming HDV Production Guide. The HDV Production Guide is a digital magazine available to all professionals who have signed up for the EventDV Spotlight newsletter.
Best of all this valuable tool is FREE to all professionals.