Title: Sound in a high dosage
Author: Frank Borowski
Practical test: Headphone amplifiers beyerdynamic A 2 versus M2 Tech Marley
Translated from the original German article
As for the sound, all three models are on top of the long evolution ladder, but beyerdynamic is still one or two steps higher, probably due to its better, integrated power supply, which has to be paid separately and dearly for the Marley and Meridian.