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Equalizer

Truly offline lossless music player for iPhone — MP3, FLAC, ALAC, WAV, OPUS, OGG with real gapless playback, crossfade, 10-band EQ, ReplayGain, Wi-Fi transfer and CarPlay. No ads, no subscription, no account.

https://syn4pse.gitlab.io/eq_settings/ Wavelet Android EQ presets for Portronics Conch Theta A with 9 bands from 62.5 Hz to 16 kHz

Android app that allows you to record audio from the microphone and adjust it using the equalizer.