I think that may depend on the bit rate the file was recorded at and the frequency response of your headphones. The frequency response of my AKG66 are 18hz - 22khz ----- Original Message ----- From: Jim Noseworthy To: bookport@xxxxxxxxxxxxx Sent: Friday, March 10, 2006 6:40 AM Subject: [bookport] frequency response. Hi Gang: Any comments concerning Bookport's output quality while playing music MP3s? I'll start the thread by saying that there seems to be quite a drop off in the high frequency range. What do you think? ------------------------------------------------------------------------------ No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 268.2.1/277 - Release Date: 3/8/2006