Android Volume Too Low with Wired Headphones

[rochespotify]

This is a long-standing issue with no viable solution, so I'd appreciate some attention. The volume output from the Spotify app on Android is far lower than other apps like Youtube, Pandora, or Podcast Addict on my phone. Please provide a solution so there is no volume limit.

Here's the detail for my phone/app:

Phone: Google Nexus 5x

OS: Android 8.0.0, Build # OPR4.170623.020

Spotify Version: 8.4.31.723

Settings:

- Maximum volume

- Equalizer off (sound becomes quiter with eq on)