My V30 battery is barely hanging on for dear life. Have loved the quad DAC sound profile and power. Looking for a replacement, possibly either a Pixel 6 Pro or Xperia 5 iii if it ever gets released to the USA. I recently acquired an Earmen Tr-Amp to give me more power and flexibility for driving my headphones, either from desktop source or a future phone. I've enjoyed pairing the Tr-Amp (using Spotify Premium on MacBook Pro) with my HD800S, but not so much when I pair it with either my Shure 846s or my MrSpeakers Aeon Flow Opens. Surprisingly, I actually prefer the V30 with the other two. Perhaps the V30 may be more bright and analytical and thus balance out the warmer, bass-focused nature of those phones. The Tr-Amp seems less neutral than I would have guessed: I get a more bloated bass and lose some treble separation and texture compared to the V30. Does that make any sense to you all? Anyhow, wondering if you all think I might choose a better portable DAC/amp to connect with a future phone (and desktop) that preserves some of what I love about the V30 quad DAC.