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Wow. What a nice upgrade. So far, PSVANE MARK II is the best tube set for TU-8200DX.
The MKII series offers superb sound quality. The new coating materials offer an even better music presentation. You will experience slight 3D imaging improvement, layering and clarity.
Edits: 03/05/14Follow Ups:
How many watts per channel does the TU-8200DX put out when using KT88 tubes?
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