Brocksieper "Earmax" pro. - Ah! lovely headphone amp! Current tubes in the one I have: Mullard M8162 6h23EB "grey plate" tubes. 60's and 80's . A very good combo! Captures all details, air and decay, awesome decay! Dead neutral! Spot on! The 6H23EB is really a low noise tube! In this combo, no tube rush at all! Extreme articulation, that's the allure of the Earmax. Tracks dynamic shadings like crazy. A real Chameleon. Sounds like the recording. A marvel this little OTL amp! Enables the listener to correctly guess the brand of toothpaste the singer uses...Every time :)

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