Sound Relay Equalizer

Sound Relay Equalizer adds a six-band equalizer to the sound of any app on your iPhone. Music, podcasts, videos: if it plays through your speaker or headphones, you can shape it. HOW IT WORKS Open Sound Relay once and leave it in the background. Open Control Center, tap the output button and choose "Sound Relay". From then on your audio passes through the equalizer on its way to the headphones or speaker you were using before: AirPods, Bluetooth or wired headphones, or the iPhone speaker. The status row shows which one. Choose your headphones in the output menu again to stop. SHAPE THE SOUND • Six bands: 60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.4 kHz and 15 kHz, each from −12 to +12 dB in half-decibel steps. • Twelve built-in presets, from Bass Boost to Classical. • Save your own presets, rename and reorder them. • An Equalizer switch to compare with the original sound at any time. • A built-in limiter keeps boosted bands from distorting. ALWAYS KNOW WHAT IS HAPPENING The status row tells you whether Sound Relay is selected and which output it is playing on. SHORTCUTS AND SIRI Open Sound Relay, choose a preset or switch the equalizer from the Shortcuts app and Siri. Let an automation open Sound Relay whenever your AirPods connect. PRIVATE BY DESIGN Your audio never leaves your iPhone. Sound Relay collects no data, has no account and never records anything. GOOD TO KNOW • Sound Relay must be running for the entry to appear in Control Center. After a restart, open it once. • If your headphones disconnect, Sound Relay mutes instead of playing out loud and tells you with a notification. Your music keeps running in its app; pause it, reconnect, or tap Play on iPhone Speaker. • AirPlay speakers such as HomePod are not supported. With one selected, Sound Relay plays on the iPhone. • Requires iOS 27.