LISA III Portable Headphone Amplifier Technical Specifications   Device Type        Solid State (IC Op-Amp/Buffer Discretehybrid) Class of Operation     DYN-O-BIAS II> Dynamically biased non Bass Boost parameters    Switching output stage..+3dB@160Hz +12dB@ 32Hz. Maximum Frequency Response    Frequency Response @ 100 mW Into a 45Ohm Load.D.C.-1.6 MHz. Within +0 to - 3dBD.C.- 600 KHz. Within +0 to - 1 dB... Signal-to-Noise Ratio    Signal to Noise ratio relative to RatedPower Output. Input Shorted > 100 dB “A” Weighted.. Total Harmonic...

  Fostex HP-P1 mini first impressions:    Original thread: http://www.head-fi.org/t/596755/fostex-hp-p1-vs-gen5-5-imod-rsa-sr-71b-balanced-output-now-with-fostex-hp-p1-review-page-2/15   I am moving from iPhone 4S playing lossless files + RSA Tomahawk + SE535LTD   Build quality good: is industry leading. It is solid, curvy, beautiful and integrates very well with an iPhone with the cut outs on the top. It just oozes quality. Think RSA build quality. It fits well into my jeans pocket as a unit surprisingly, so quite portable considering...