Here is a review of several of these portable recorders. This is an old review and is slanted toward the core-sound recorder, a professional quality digital recorder, but it does give a comparison of some of the fundamental issues with the various units.
Here is a review of the Edirol R-09 on Amazon - compare with the Micro Trak unit.
Important issues to consider and review:
- User interface - can you find the buttons, knobs to do a simple recording process or are do you have to traverse the menu trees?
- Battery type and life - standard cells are good, odd-sized batteries bad. Can you record while recharging? Can you record on aux power?
- Noise: Is it noisier on power supply? What is the noise inherent in the internal mic' pre's?
- Leveling: Does it have an internal overload indicator? Limiter? Do I want one?
- Inputs: XLR (H4) or line in? Digital input (Microtrak)?
- Outputs: Digital (Edirol, MT, H4?).
- Internal Mic' pattern: Omni? Directional?.
- Data download: USB data dump? Do I have to remove a flash card?
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For acoustic recordings I have the Edirol R-09 and two Audio-Technica AT3032 omni condensers to use with one of
these (Jecklin disc). The built in mics aren't too bad and it is possible to fashion a Jecklin-like acoustic baffle to mount to the recorder, Sony, Zoom, whichever. The Jecklin gives realistic stereo separation for reproduction through stereo speakers.
The Cadillac (Porsche?) of these portable stereo units has to be the
Sony PCM-D1 ($2k list, titanium case, analog meters), though Sony recently released
this ($500 - aluminum body) which has some intersting features. Most of the others are plastic (core-sound is metal).