Notes: The DAPs were tested with no equalizer boost, through their headphone jacks at a relatively normal listening volume. I'm using regular (not audiophile) quality interconnects and line splitters from Radio Shack. The sound file used was generated using Audacity, a 30 second long 40 Hz square wave, just like Breez and Bill Machrone. See Bill's results here: http://www.pcmag.com/article2/0,1759,1777890,00.asp and http://home.comcast.net./~machrone/playertest/playertest.htm
 
Computer: Dell Dimension 8300 w/ a Turtle Beach Santa Cruz soundcard, line in (Not as nice as Bill Machrone's external USB unit, but it'll do)
 
DAPs tested:
- 4G 20GB iPod
- Archos Jukebox Recorder 10
- HP iPaq 2210 PocketPC
 
Headphones used (w/ impedance in Ohms):
- iPod earbuds (32)
- Koss HP-CN5 Noise Cancelling headphones*** (32)
- Sony MDR-G72 Street Style (32)
- Sony MDR-V6 (63)
- Shure e3c (26)
 

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