Thanks for the suggestion, I live on a desert island (literally) so not so easy to sell the cable, but I'll just keep the silver to one side for a later time when I can get a more versatile amp. I'm saving up for a decent tube amp so can get by with a 6.35mm to 3.5mm converter and use the VC with my Mojo 2 till then, recognising that this is not optimum.See if you can sell that silver cable that it comes with to fund a temporary amplifier that will do the job. Something from topping or Schiit.
An Asgard or Midgard would fit the bill for universal use, or a Valhalla if you're all in on high impedance cans. All three units can be had from $220-$300 new, even less on the classifieds.
I must respectfully disagree based on my experience. I own a Sony WM1A and regularly use my three ZMF 300 Ohm dynamic-driver headphones out of it with great success.
The only two caveats: 1. They are powered by the 4.4 mm balanced output, and 2. I use the Mr. Walkman firmware with the gain boosted.
I do need to use the volume at 85-100 of 120, but the sound is excellent to my ears. It’s not on par with my dedicated amps, but not far enough behind that I miss them when working at my desk.
I appreciate the other perspectives. Mine is the Sony ZX-707, and I don't think we have the Mr Walkman firmware for that yet. I can test out out with the 3.5mm output easily enough, but to try the balanced output I would need to buy an 4-pin XLR to 4.4mm adapter. I might try this, but then if piling up adapters in this way I might as well just buy a new cable or put it towards an amp with more outputs.I think this is somewhat dependent on listening levels and musical preferences. In my experience, my FIIO M11 Pro will drive my VCs from the balanced out fine at moderate listening with music that isn’t bass heavy.
Thank you all for replying though, very helpful indeed. Am beyond excited to join the VC owners' club, I've been lurking in this thread for years.