diff --git a/usermods/audioreactive/audio_reactive.cpp b/usermods/audioreactive/audio_reactive.cpp
index 2587b8be1..06268560a 100644
--- a/usermods/audioreactive/audio_reactive.cpp
+++ b/usermods/audioreactive/audio_reactive.cpp
@@ -65,11 +65,14 @@ static bool udpSyncConnected = false;         // UDP connection status -> true i
 
 // audioreactive variables
 #ifdef ARDUINO_ARCH_ESP32
+    #ifndef SR_AGC // Automatic gain control mode
+    #define SR_AGC 0 // default mode = off
+    #endif
 static float    micDataReal = 0.0f;             // MicIn data with full 24bit resolution - lowest 8bit after decimal point
 static float    multAgc = 1.0f;                 // sample * multAgc = sampleAgc. Our AGC multiplier
 static float    sampleAvg = 0.0f;               // Smoothed Average sample - sampleAvg < 1 means "quiet" (simple noise gate)
 static float    sampleAgc = 0.0f;               // Smoothed AGC sample
-static uint8_t  soundAgc = 0;                   // Automagic gain control: 0 - none, 1 - normal, 2 - vivid, 3 - lazy (config value)
+static uint8_t  soundAgc = SR_AGC;              // Automatic gain control: 0 - off, 1 - normal, 2 - vivid, 3 - lazy (config value)
 #endif
 //static float    volumeSmth = 0.0f;              // either sampleAvg or sampleAgc depending on soundAgc; smoothed sample
 static float FFT_MajorPeak = 1.0f;              // FFT: strongest (peak) frequency
diff --git a/usermods/audioreactive/readme.md b/usermods/audioreactive/readme.md
index bd253c82c..5ee575fff 100644
--- a/usermods/audioreactive/readme.md
+++ b/usermods/audioreactive/readme.md
@@ -60,8 +60,9 @@ You can use the following additional flags in your `build_flags`
 
 * `-D SR_SQUELCH=x`  : Default "squelch" setting (10)
 * `-D SR_GAIN=x`     : Default "gain" setting (60)
+* `-D SR_AGC=x`      : (Only ESP32) Default "AGC (Automatic Gain Control)" setting (0): 0=off, 1=normal, 2=vivid, 3=lazy
 * `-D I2S_USE_RIGHT_CHANNEL`: Use RIGHT instead of LEFT channel (not recommended unless you strictly need this).
-* `-D I2S_USE_16BIT_SAMPLES`: Use 16bit instead of 32bit for internal sample buffers. Reduces sampling quality, but frees some RAM ressources (not recommended unless you absolutely need this).
+* `-D I2S_USE_16BIT_SAMPLES`: Use 16bit instead of 32bit for internal sample buffers. Reduces sampling quality, but frees some RAM resources (not recommended unless you absolutely need this).
 * `-D I2S_GRAB_ADC1_COMPLETELY`: Experimental: continuously sample analog ADC microphone. Only effective on ESP32. WARNING this *will* cause conflicts(lock-up) with any analogRead() call.
 * `-D MIC_LOGGER`     : (debugging) Logs samples from the microphone to serial USB. Use with serial plotter (Arduino IDE)
 * `-D SR_DEBUG`       : (debugging) Additional error diagnostics and debug info on serial USB.