diff --git a/lib_com/options.h b/lib_com/options.h
index c5e6c1a758cd6133a38904bc080f7ea7afbe058b..fe92d9fa10b579f404933e8cab903e3fbf4556ae 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -170,6 +170,7 @@
 #define FIX_1123_PARAMBIN_16BIT_ROM                     /* FhG,Nok: issue 1123: update ParamBin ROM tables and scripts to generate 16 bit tables instead of float */
 #define FIX_RETURN                                      /* VA: fix location of function returns */
 #endif
+#define FIX_1129_EXT_REND_OUTPUT_HIGH                   /* Philips: issue 1129: External renderer BINAURAL_ROOM_REVERB format output level too high compared to internal rendering output */
 #define FIX_1152_UNINIT_VAL_IN_ITD_VAD_COMPUTATION      /* FhG: fix uninitialized value being used in ITD VAD mid signal computation that does not affect synthesis, but crashes BASOPs */
 
 /* #################### End BE switches ################################## */
diff --git a/lib_rend/lib_rend.c b/lib_rend/lib_rend.c
index d091f05c0c8d6df2bd514facf285a800435e85e8..2d4369c172191aafdbdbf9ee25e6759e88412e37 100644
--- a/lib_rend/lib_rend.c
+++ b/lib_rend/lib_rend.c
@@ -2529,6 +2529,9 @@ static ivas_error updateSbaPanGains(
                     break;
                 }
                 case IVAS_AUDIO_CONFIG_BINAURAL:
+#ifdef FIX_1129_EXT_REND_OUTPUT_HIGH
+                case IVAS_AUDIO_CONFIG_BINAURAL_ROOM_REVERB:
+#endif
                     if ( hRendCfg->split_rend_config.rendererSelection == ISAR_SPLIT_REND_RENDERER_SELECTION_FASTCONV )
                     {
                         if ( ( error = ivas_rend_openCldfbRend( &inputSba->cldfbRendWrapper, inConfig, outConfig, &rendCtx.pSplitRendWrapper->multiBinPoseData, *rendCtx.pOutSampleRate ) ) != IVAS_ERR_OK )
@@ -2545,7 +2548,9 @@ static ivas_error updateSbaPanGains(
                     }
                     break;
                 case IVAS_AUDIO_CONFIG_BINAURAL_ROOM_IR:
+#ifndef FIX_1129_EXT_REND_OUTPUT_HIGH
                 case IVAS_AUDIO_CONFIG_BINAURAL_ROOM_REVERB:
+#endif
                     if ( ( error = initSbaPanGainsForMcOut( inputSba, IVAS_AUDIO_CONFIG_7_1_4, NULL ) ) != IVAS_ERR_OK )
                     {
                         return error;
@@ -6754,11 +6759,19 @@ static ivas_error renderInputSba(
                 case IVAS_AUDIO_CONFIG_BINAURAL_SPLIT_PCM:
                     error = renderSbaToSplitBinaural( sbaInput, outConfig, outAudio );
                     break;
+#ifdef FIX_1129_EXT_REND_OUTPUT_HIGH
+                case IVAS_AUDIO_CONFIG_BINAURAL:
+                case IVAS_AUDIO_CONFIG_BINAURAL_ROOM_REVERB:
+                    error = renderSbaToBinaural( sbaInput, outConfig, outAudio );
+                    break;
+                case IVAS_AUDIO_CONFIG_BINAURAL_ROOM_IR:
+#else
                 case IVAS_AUDIO_CONFIG_BINAURAL:
                     error = renderSbaToBinaural( sbaInput, outConfig, outAudio );
                     break;
                 case IVAS_AUDIO_CONFIG_BINAURAL_ROOM_IR:
                 case IVAS_AUDIO_CONFIG_BINAURAL_ROOM_REVERB:
+#endif
                     error = renderSbaToBinauralRoom( sbaInput, outConfig, outAudio );
                     break;
                 default: