NetMD is standard minidisc, so it records only using ATRAC, a lossy compression format
Hi-MD is the new minidisc format that can record in PCM (WAV file), without compression.
You can buy a new AA-powered MZ-NH700 Hi-MD recorder for about $100 on eBay
right now. This model was not sold in USA (Sony offered the MZ-NH800, with
built-in FM radio instead). Most of the NH700s are Australian stock, discontinued
about 9 months ago. They come with a 3 month warranty.
If you want a new USA model, check out the MZ-RH910, about $165 from
several outlets, including
www.BHPhotoVideo.com in NYC. The new $300 MZ-RH1
Hi-MD recorder is expected in USA in a few weeks.
A Hi-MD recorder can format and record to the original minidiscs, but you'll get only
28 minutes of record time before the disc is full. A Hi-MD disc can hold 94 minutes
of stereo. As you might expect, Hi-MD discs are more expensive, about $7 each.
Sometimes
www.musiciansfriend.com has them on sale for $4, but not right now.
It's worth noting that the preamp and recording mechanism in all Hi-MD recorders
appears to be the same. Sony certainly doesn't say anything to the contrary.
The cheapest model and the most expensive produce an equally good recording.
The more expensive models have sturdier construction (metal case vs plastic),
somewhat smaller size, and rechargeable batteries with longer life.
Hi-MD recorders provide "plug-in power" to electret condenser mics. If your mics
require 48v "phantom power," you'll need an external power supply. One
good model is the Rolls PB224, which can power two mics from two 9V
batteries. The PB224 measures 5.5" x 2.7" x 1.75" so it's quite compact.
The Rolls PB224 costs about $75.
Flintstone