Thank you, but no; I don't (didn't) listen at high levels. This kit combination (Sony DAC and headphones) is more subtle at quite low volume.   Regards.

Thank you very much, and also others that have replied. I'd never heard of 'Neutron' but downloading it now. Looks like it has all the features I would currently want (especially mono) given my current limitations.   Regards.

I bought the PHA-3 together with the MDR-Z7 headphones about 3 months ago. What bliss to hear Bach organ and Puccini opera in an environment that could trick you into believing you were at the console at the Wanamaker organ in Macy's PA; or in a prime box seat at La Scala.   However, six weeks...