PS Vita Equalizer (EQVita)

System-wide 8-band graphic equalizer kernel plugin for PS Vita (3.65 Ensō) with a companion UI app.

This is the first EQ app to control frequency bands across the entire PS Vita audio system (yes, globally), simply because nobody bothered to make one before.

Layout

• plugin/ — Kernel plugin (eq_speaker.skprx)
• app/ — UI app (EQVita.vpk)
• common/ — Shared headers
• docs/ — Technical notes

Download

If you don't want to build it yourself, download the latest binaries from Releases.

Screenshots

Build

To build from source, you need VitaSDK.

# Configure
cmake -S . -B build

# Build
cmake --build build

Outputs:

• build/plugin/eq_speaker.skprx
• build/app/EQVita.vpk

Install

1. Copy eq_speaker.skprx to ur0:tai/.
2. Add to ur0:tai/config.txt under *KERNEL:

   *KERNEL
   ur0:tai/eq_speaker.skprx
   

3. Reboot.
4. Install EQVita.vpk.
5. Run EQVita to adjust settings.

Note: The plugin is disabled by default to prevent boot issues. Launch EQVita to enable it.

Usage

• Bands: 31Hz - 4kHz (Note: HPF option disables frequencies under 70Hz).
• Gain: ±12 dB
• Controls:
  • Triangle: Save preset
  • Square: Load preset (ux0:data/eqvita/preset0.bin)
• Status: Shows route, sample rate, and clip count.

Notes

• Hardware: Tested on PS Vita 1000 (PCH-1000) with Switch OLED speaker mod. Should work on other models.
• Personal Config: I use +4 on bass and -4 on midrange. The difference is quite big.
• Disclaimer: This is my first PS Vita project and a hobby endeavor. If it works, it works.
• Credits: UI images adapted from VitaShell.
• Bluetooth detection is not yet implemented.
• DSP uses an in-place biquad chain with smoothing.
• If audio crackles, reduce gain or preamp.