1. Poweramp

I use Poweramp as my primary audio player on my phone. It’s a popular music player app for Android, known for its rich features designed for audiophiles and music enthusiasts. It offers a wide range of sound customization options, including:

• Advanced Equalizer: A 10-band graphic equalizer with numerous presets and the ability to create custom settings.
• High-Resolution Audio Support: It supports various audio formats like FLAC, WAV, MP3, and more, with high-resolution audio playback.
• Customization: Features like crossfade, gapless playback, and support for lyrics and album art.
• User Interface: A sleek and super customizable interface with visualizations, themes, and widgets.
  There are tons of theming apps for Poweramp, such as Luminous, which is my favorite.
• Bass and Treble Control: Fine-tune the sound with independent bass and treble adjustments.

It’s a go-to app for those looking to enhance their audio experience on mobile devices.

2.BlackHole

BlackHole is an open-source, feature-rich music player app available for Android. It is known for its sleek, modern interface and the ability to stream high-quality music without any ads. The app offers a seamless user experience, making it popular among music lovers looking for a simple yet powerful alternative.

Key features of BlackHole :

• Offline & Online Playback: It supports both locally stored music and online streaming from platforms like Spotify, YouTube, and JioSaavn.
• No Ads: A completely ad-free experience, allowing users to enjoy uninterrupted music.
• Customizable Interface: Themes, layouts, and font options make the app visually appealing and highly customizable.
• Lyrics Support: Users can view synchronized lyrics while playing songs.
• Playlist Creation and Sync: Easy playlist management, along with cross-device playlist syncing.

I personally don’t use it much because it doesn’t play high quality audio. It seems to play at 128 kbps all the time, which is very disappointing.

3. Symfonium

This app is just 🔥!!!
Personally, I use my self-hosted music server to play my music collection, and I use a music streaming server called Subsonic, which I have hosted in my home lab.

The main feature of this app is that you can connect your own music server to it. It supports multiple servers, such as Emby, Jellyfin, Plex, and more. There’s also a built-in RootlessJamesDSP implementation which also include Auto EQ from autoeq.app , which blew my mind. It’s an all in one app for audiophiles.

Key features of Symfonium :

Highly Customizable Equalizer: With a powerful equalizer, users can fine-tune the sound output to their liking.

Local & Cloud Music Integration: Symfonium can handle local music files and stream from various media servers, including Plex, Emby, Jellyfin, and Subsonic, making it a one-stop app for all your music needs.

Advanced Playback Options: The app supports gapless playback, crossfade, and high-resolution audio formats like FLAC, MP3, and more.

Customizable Interface: Symfonium offers a clean, intuitive UI with customizable themes, layouts, and widgets to suit personal tastes.

Offline Mode: You can download music from your media servers for offline listening, ensuring your music is accessible even without an internet connection.

Unified Library Management: It combines music from various sources into one easy-to-manage library, with options for creating and syncing playlists across devices.

Metadata & Lyrics Support: Symfonium automatically fetches metadata and lyrics, enhancing the overall music experience.

4. HiBy Music

HiBy Music is a high-quality music player app designed specifically for audiophiles. It’s well-known for its advanced audio features and support for a wide range of high-resolution audio formats.

Key features of HiBy Music include:

Customizable UI: The app offers a sleek, user-friendly interface that is also customizable with different themes and layouts.

High-Resolution Audio Support: HiBy Music supports formats such as FLAC, WAV, APE, DSF, DFF, and many others, ensuring users can enjoy lossless, studio-quality sound.

Bit-Perfect Output: The app offers bit-perfect output on both Android and HiBy’s own portable devices, meaning the audio is delivered without any alteration or loss of quality.

MQA Support: It includes support for Master Quality Authenticated (MQA) audio, enabling high-fidelity sound on supported tracks.

HiByLink: This feature allows users to control their HiBy devices from their phone, offering a seamless experience for those using HiBy’s hardware alongside the app.

Professional-Grade Equalizer: With a 10-band equalizer and several sound effects, HiBy Music lets users fine-tune the audio to their liking.

5. Musicolet Music Player

This is one of the best free music player available on playstore. This app also has a built-in equalizer.

Key features of Musicolet include:

Lightweight & Ad-Free: Despite being packed with features, Musicolet is small in size and runs efficiently without draining system resources.

Offline Playback: Musicolet is purely for offline music, so it doesn’t require any internet access, ensuring an ad-free and distraction-free experience.

Multiple Queues: Unlike most music players, Musicolet allows users to create and manage multiple queues at once, giving greater control over playlists and song order.

Simple Yet Powerful UI: The app offers a minimal, clean user interface with easy navigation and customization options like themes and layouts.

Advanced Equalizer: Musicolet comes with a built-in equalizer, as well as support for external equalizers, allowing users to fine-tune their sound settings.

Folder Browsing: It allows users to browse and play music directly from folders, providing a straightforward way to access your music collection.

Tag Editor & Lyrics Support: Users can edit song tags and even view embedded lyrics or add their own for a more immersive experience.

Some Bonus Apps:
https://github.com/namidaco/namida
https://play.google.com/store/apps/details?id=com.pittvandewitt.wavelet&hl=en
https://play.google.com/store/apps/details?id=com.fiio.music