[violeta88]

I wanted to update my original post by saying that even though I have three portable headphone amps now, that for the K701's, the Total Airhead is the cleanest, most dynamic of them, and my collection of portable headphone amps consists of the Corda Move, Shek H1 and the Total Airhead. While the Move has a bit beefier bass, the Airhead is punchy and goes just as deep, especially with the Crossfeed turned on and is more vivid in its soundstaging. The Airhead is consistently cleaner than the Shek, and maintains the lower level clarity of the Shek, while adding a bit of warmth. The Airhead is cleaner to louder volumes than the Shek,yet at the loudest volume the Airhead can reproduce, is as clean as the Shek at lower volume levels. In terms of neutrality, it is a bit warmer than what I would call neutral, but not as warm as the Move, and in terms of overall transparency and resolution of fine detail, it is the best of the three. I have found that the Move is overrated in the transparency category, and isn't as good as the Porta Corda III in terms of transparency. The Airhead comes very close to what I remember of the Porta Corda III, but adds a bit of warmth that the Porta Corda III didn't have. I am still highly impressed that HeadRoom could produce such a high quality amp for $99.