Her er en Centrance combo som kan være interessant for nogle. Forholdsvis lille USB drevet head amp. som Steve Guttenberg synes lyder godt. Kræver ingen driver eller batteri:
http://www.centrance.com/products/
Steve siger bla. :
"System setup is supereasy: plug the DACport into your computer, and the little amp takes over as the main sound card and is ready to go. There's nothing to install, just plug and play!
The DACport's Class-A amplifier has enough power to drive nearly any headphone to high volume levels. The DACport has more than 200 internal parts, and its metal chassis runs warm to the touch.
I used a number of headphones for this review including the full-size Grado RS-1, Sennheiser HD-650, Audio Technica ATH-M50s, and my Jerry Harvey JH-13 custom-molded in-ear headphones. The weight and dimensionality of the sound of the big bass drum on Jakob Dylan's "Nothing but the Whole Wide World," from his "Women and Country" CD, nearly knocked me over. Bass power, definition, and control are excellent, but it was the DACport's overall clarity and low distortion that stood out over many hours of use. I heard absolutely no noise or hiss from this USB DAC; it's really quiet!
Read more: http://news.cnet.com/8301-13645_3-20112 ... z1ZkCR0KuK