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This Post Has Been Edited by the Author
TU-822's ranking
http://www.head-fi.org/forums/f5/review-summary-ranking-22-tube-tube-hybrid-headphone-amps-402585/
TU-882's Review
http://www.head-fi.org/forums/f5/review-elekit-tu882-tube-headphone-amp-kit-assembled-434829/
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