Audiophilepure

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“The synchronous mode is a little closer to the DA10 tuning with a softer overtone and a bit more bass warmth. Also, the upper mids and treble are a little more liquid soundings and not as aggressive.

That is not to say the async mode is brighter but you will find the mids and treble to have a bit more focus and the instrumental timbre a bit cleaner. It also sounds perceptibly the more articulate for percussion which might suit smoother sounding headphones like the Heddphone.”