Hi there,
I have a TTVJ Slim Portable Headphone Amp without DAC. Almost never used, powered on once or twice but never after that. Bought it but switched to home audio after that.
Look for $300 slightly negotiable.
Contact me at nine 4 five 5 9 5 four 1 to deal.
Thanks!
Review: http://www.innerfidelity.com/content/you-can-take-it-you-survey-portable-usb-headphone-ampdacs-ttvj-slim