Agree 100%. Amazing synergy.Nothing like the FiiO M17 for the Utopia with a fixed power supply in overear mode. But it’s not a dap, really. If mobility is required, the FiiO M15 does a very competent job.
Trades blows with Ferrum stack with respect to synergy with the Utopia.
While the Utopia on the Ferrum is drier and perhaps a tad more resolving (and punchier), on the M17, it’s sweeter, smoother, and the Utopia midrange is at its finest.
So impressed with the M17 pairing that I am considering getting the K9 Pro for the Utopia.