This headphone amp is currently a Kickstarter project: http://www.kickstarter.com/projects/1682246865/sicphones-a-high-end-silicon-carbide-headphone-amp The following description was copied from Tyll at innerfidelity: "This is an amp that will show up on Kickstarter soon, and is a single-ended, single stage, constant current source amplifier based around a newly introduced Silicon Carbide depletion mode trench JFET manufactured by SemiSouth. It's currently planned as a sub-$500 amp, and it sounded clean as a whistle and fast, fast, fast without being bright to my ears." http://www.innerfidelity.com/content/innerfidelity-september-2012-update Some interview-type Q&As between the designer and Srajan@6moons, indicating that this amp was inspired by Nelson Pass's design: http://www.6moons.com/industryfeatures/sicphones/1.html I looked at the designer's web site and his resume/experiences, but can not extract much information. I may pledge $55 to get its PCB and with Silicon Carbide JFET. Does it sound like a good idea? You can get a finished product by pledging $279.