diff --git a/usermods/audioreactive/audio_reactive.cpp b/usermods/audioreactive/audio_reactive.cpp
index 7baa79689..f5200ef4d 100644
--- a/usermods/audioreactive/audio_reactive.cpp
+++ b/usermods/audioreactive/audio_reactive.cpp
@@ -1206,7 +1206,7 @@ class AudioReactive : public Usermod {
           break;
         #if  !defined(CONFIG_IDF_TARGET_ESP32S2) && !defined(CONFIG_IDF_TARGET_ESP32C3)
         case 5:
-          DEBUGSR_PRINT(F("AR: I2S PDM Microphone - ")); DEBUGSR_PRINTLN(F(I2S_PDM_MIC_CHANNEL_TEXT));
+          DEBUGSR_PRINT(F("AR: Generic PDM Microphone - ")); DEBUGSR_PRINTLN(F(I2S_PDM_MIC_CHANNEL_TEXT));
           audioSource = new I2SSource(SAMPLE_RATE, BLOCK_SIZE, 1.0f/4.0f);
           useBandPassFilter = true;  // this reduces the noise floor on SPM1423 from 5% Vpp (~380) down to 0.05% Vpp (~5)
           delay(100);
@@ -1624,7 +1624,8 @@ class AudioReactive : public Usermod {
             if (audioSource->getType() == AudioSource::Type_I2SAdc) {
               infoArr.add(F("ADC analog"));
             } else {
-              infoArr.add(F("I2S digital"));
+              if (dmType == 5) infoArr.add(F("PDM digital")); // dmType 5 => generic PDM microphone
+              else infoArr.add(F("I2S digital"));
             }
             // input level or "silence"
             if (maxSample5sec > 1.0f) {
@@ -1911,7 +1912,7 @@ class AudioReactive : public Usermod {
       uiScript.print(F("addOption(dd,'SPH0654',3);"));
       uiScript.print(F("addOption(dd,'Generic I2S with Mclk',4);"));
     #if  !defined(CONFIG_IDF_TARGET_ESP32S2) && !defined(CONFIG_IDF_TARGET_ESP32C3)
-      uiScript.print(F("addOption(dd,'Generic I2S PDM',5);"));
+      uiScript.print(F("addOption(dd,'Generic PDM',5);"));
     #endif
     uiScript.print(F("addOption(dd,'ES8388',6);"));
     
diff --git a/usermods/audioreactive/audio_source.h b/usermods/audioreactive/audio_source.h
index 975f71004..423ac2abb 100644
--- a/usermods/audioreactive/audio_source.h
+++ b/usermods/audioreactive/audio_source.h
@@ -225,15 +225,17 @@ class I2SSource : public AudioSource {
 
         _config.mode = i2s_mode_t(I2S_MODE_MASTER | I2S_MODE_RX | I2S_MODE_PDM); // Change mode to pdm if clock pin not provided. PDM is not supported on ESP32-S2. PDM RX not supported on ESP32-C3
         _config.channel_format =I2S_PDM_MIC_CHANNEL;                             // seems that PDM mono mode always uses left channel.
-        _config.use_apll = true;                                                 // experimental - use aPLL clock source to improve sampling quality
+        _config.use_apll = false;                                                // don't use aPLL clock source (fix for #5391)
         #endif
       }
 
 #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 2, 0)
       if (mclkPin != I2S_PIN_NO_CHANGE) {
+        #if !defined(WLED_USE_ETHERNET)  // fix for #5391 aPLL resource conflict - aPLL is needed for ethernet boards with internal RMII clock
         _config.use_apll = true; // experimental - use aPLL clock source to improve sampling quality, and to avoid glitches.
         // //_config.fixed_mclk = 512 * _sampleRate;
         // //_config.fixed_mclk = 256 * _sampleRate;
+        #endif
       }
       
       #if !defined(SOC_I2S_SUPPORTS_APLL)