Thanks I have ZMF Verite Closed and love them so really wanted to try a tube amp since that’s the original way I heard them.
The Fiio m15 is a good sound dap for its price. I really like AKM dacs, every one I’ve heard has a very smooth clear presentation that follows more of the Harmon curve. Which the m15 definitely does, it’s biggest down fall is dynamics. With standard quality music like cd quality flac from tidal or purchased it sounds very detailed, warm, smooth and good layering. It just isn’t as dynamic as the A&K with the same dac, that offers more excitement with bass that’s more felt and more variance in soft to loud. To me the m15 does everything as clean and well rounded as can be just a little less excitement then the A&K sp2000, which is $3,500. So really not a fair comparison. With Qobuz higher res flac and Tidal MQA and DSD I have the m15 becomes more dynamic and has better bass impact. So the m15 becomes very bias to recording quality, which my old A&K 380 was not, but it had an older AKM dac in it. The m15 UI is very easy to use like my old A&K, wish Tidal and Qobuz played in its direct music player side but I guess with the old Android that probably couldn’t be done. For its price with the powerful amp it has, its a good buy. The A&K sp2000 was better overall but it’s also almost 3 times its price. And like you by stepping down a little I got something I wanted as well.