As usual, this applies to my brain/ears so YMMV — Compared to my Schiit Jotunheim 2 Multibit and Sony NW-WM1AM2, the RU7* and Sony NW-ZX507** sounded better for the following reasons (note that my Bokeh setup is with the suede pads and stock burst mesh and I'm using them with the ZMF 4.4 balanced cable):
- Balanced, the Jotunheim 2 was too powerful and dynamic for my tastes (vol. was max. at 9 o'clock on low gain, so imagine the headroom) something which, for exemple, didn't happen with my Grado SR325X
- Balanced, the Sony WM1AM2 turned out to be a tad too laid back and anaemic in comparison — good to go if you don't compare but, as soon as I do, you realise you've been missing a little something
- Balanced, both the ZX507 and RU7 straddle that line in-between the aforementioned two in a surprising way — they're the sweet spot retaining the necessary amount of dynamism all the while being a relaxed listen, i.e. not too much in your face
I'm gobsmacked by the ZX507 and extremely happy with the synergy it has with the Bokeh as it's my favourite DAP from a form-factor standpoint.
I'd rank the synergies with the Bokeh as follow: ZX507 > RU7 > Jotunheim 2 Multibit > WM1AM2.
* High gain, DSD64
** Uncapped, high gain, DC Phase Linearizer Type B STANDARD & Vinyl Processor Standard both ON
Nice song . Love The Who!