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Plantronics Audio 550 DSP Headset




Speaker Driver Size 40mm diameter
Speaker Frequency Response 20Hz - 20kHz
Microphone Frequency Response 100Hz - 10kHz
Cable Length 3 meters (USB plug)
Digital Signal Processing (DSP):
  • Full stereo 16-bit, 48kHz data from USB
  • 24 bit 100dB signal-to-noise CODEC
  • 32 bit digital audio processing



Test System:

  • Intel Core 2 Duo E6600 Processor
  • ASUS P5N32-SLi SE Deluxe Motherboard
  • OCZ Gold 1GB (2 x 512MB) DDR2 800 Memory
  • eVGA 7950GT KO Video Card
  • XG Vortec 600watt Power Supply
  • Western Digital 250GB IDE Hard Drive   
  • Western Digital 160GB SATA 3.0GB/s Hard Drive
  • Seagate 80GB IDE Hard Drive
  • LG DVD-R DL Burner
  • Windows XP Media Center 2005
  • Audigy 2 Sound Card
  • Enermax Uber Chakra ATX Full Tower Case

Finally, we can do some good old testing by slapping this headset on and playing some games, listening to music, and watching movies.  The first thing I tested was music. I played many songs trying to get the speakers to crackle or sound bad. I succeeded, which is not a good thing. The bass really interferes with the music and sounds terrible when you turn it all the way up. I found that if you turn on the bass boost, it sounds much crisper than without bass boost. If you leave the bass slider in the middle, it doesn’t sound too bad, until you crank up the volume almost all the way up. Until that point, everything sounds crystal clear. In gaming, I still noticed that the bass wasn’t good when the volume was way up, but it was tolerable with the Gaming mode on. While I watched a movie, the bass didn’t sound bad at all, no matter how loud I turned it. These headsets absolutely clobber my old DCT Factory $5.00 headset, which has absolutely no bass at all.

To test the microphone, I went on TeamSpeak, as well as Counter-Strike: Source, and talked to all my buddies with the microphone. They all said that I sounded crystal clear. I knew that I was sounding that good because of the microphone test in the PerSono software – the playback that I heard was just outstanding. It honestly sounded like I was talking to myself because there were no sounds being picked up from the background.

  1. Introduction & Closer Look
  2. Closer Look (Continued)
  3. Installation & Configuration
  4. Specifications & Testing
  5. Conclusion
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