diff --git a/lib_ex3d/.DS_Store b/lib_ex3d/.DS_Store
new file mode 100644
index 0000000..b706780
Binary files /dev/null and b/lib_ex3d/.DS_Store differ
diff --git a/lib_ex3d/Makefile b/lib_ex3d/Makefile
new file mode 100644
index 0000000..8b74c9a
--- /dev/null
+++ b/lib_ex3d/Makefile
@@ -0,0 +1,10 @@
+# This variable should contain a space separated list of all
+# the directories containing buildable applications (usually
+# prefixed with the app_ prefix)
+#
+# If the variable is set to "all" then all directories that start with app_
+# are built.
+BUILD_SUBDIRS = all
+
+XMOS_MAKE_PATH ?= ..
+include $(XMOS_MAKE_PATH)/xcommon/module_xcommon/build/Makefile.toplevel
diff --git a/lib_ex3d/lib_ex3d/.DS_Store b/lib_ex3d/lib_ex3d/.DS_Store
index ce2e1b5..7081781 100644
Binary files a/lib_ex3d/lib_ex3d/.DS_Store and b/lib_ex3d/lib_ex3d/.DS_Store differ
diff --git a/lib_ex3d/lib_ex3d/._.DS_Store b/lib_ex3d/lib_ex3d/._.DS_Store
deleted file mode 100644
index c1965ad..0000000
Binary files a/lib_ex3d/lib_ex3d/._.DS_Store and /dev/null differ
diff --git a/lib_ex3d/lib_ex3d/._api b/lib_ex3d/lib_ex3d/._api
deleted file mode 100644
index 743c693..0000000
Binary files a/lib_ex3d/lib_ex3d/._api and /dev/null differ
diff --git a/lib_ex3d/lib_ex3d/._lib b/lib_ex3d/lib_ex3d/._lib
deleted file mode 100644
index ba50a0d..0000000
Binary files a/lib_ex3d/lib_ex3d/._lib and /dev/null differ
diff --git a/lib_ex3d/lib_ex3d/api/._.DS_Store b/lib_ex3d/lib_ex3d/api/._.DS_Store
deleted file mode 100644
index aa2c934..0000000
Binary files a/lib_ex3d/lib_ex3d/api/._.DS_Store and /dev/null differ
diff --git a/lib_ex3d/lib_ex3d/api/._DSAudioDef.h b/lib_ex3d/lib_ex3d/api/._DSAudioDef.h
deleted file mode 100644
index 9148313..0000000
Binary files a/lib_ex3d/lib_ex3d/api/._DSAudioDef.h and /dev/null differ
diff --git a/lib_ex3d/lib_ex3d/api/._DSBuild.h b/lib_ex3d/lib_ex3d/api/._DSBuild.h
deleted file mode 100644
index 08aa37b..0000000
Binary files a/lib_ex3d/lib_ex3d/api/._DSBuild.h and /dev/null differ
diff --git a/lib_ex3d/lib_ex3d/api/._IR.h b/lib_ex3d/lib_ex3d/api/._IR.h
deleted file mode 100644
index 3f7b894..0000000
Binary files a/lib_ex3d/lib_ex3d/api/._IR.h and /dev/null differ
diff --git a/lib_ex3d/lib_ex3d/api/._audio_ex3d_control.h b/lib_ex3d/lib_ex3d/api/._audio_ex3d_control.h
deleted file mode 100644
index 684fede..0000000
Binary files a/lib_ex3d/lib_ex3d/api/._audio_ex3d_control.h and /dev/null differ
diff --git a/lib_ex3d/lib_ex3d/api/._filter.h b/lib_ex3d/lib_ex3d/api/._filter.h
deleted file mode 100644
index b4debb2..0000000
Binary files a/lib_ex3d/lib_ex3d/api/._filter.h and /dev/null differ
diff --git a/lib_ex3d/lib_ex3d/api/audio_ex3d_control.h b/lib_ex3d/lib_ex3d/api/audio_ex3d_control.h
index 92e4d61..38e7565 100644
--- a/lib_ex3d/lib_ex3d/api/audio_ex3d_control.h
+++ b/lib_ex3d/lib_ex3d/api/audio_ex3d_control.h
@@ -68,3 +68,9 @@ EXTERN uint8_t bEX3D_Upmix;                     // EX3D Upmix 유무 저장
 EXTERN int32_t Ex3dLimiterThreshold;              // EX3D Limiter threshold 값
 EXTERN int32_t Ex3dLimiterAttackTime;           // EX3D Limiter Attack Time 값
 EXTERN int32_t Ex3dLimiterReleaseTime;          // EX3D Limiter Release Time 값
+
+// dhlee++
+EXTERN int32_t Ex3dExpandGain;              // EX3D Expand Gain 값
+EXTERN int32_t Ex3dReduceGain;              // EX3D Reduce Gain 값
+
+// dhlee--
diff --git a/lib_ex3d/lib_ex3d/lib/._.DS_Store b/lib_ex3d/lib_ex3d/lib/._.DS_Store
deleted file mode 100644
index ddc3c01..0000000
Binary files a/lib_ex3d/lib_ex3d/lib/._.DS_Store and /dev/null differ
diff --git a/lib_ex3d/lib_ex3d/lib/liblib_ex3d_drama.a b/lib_ex3d/lib_ex3d/lib/liblib_ex3d_drama.a
index 153e23b..4cf232f 100644
Binary files a/lib_ex3d/lib_ex3d/lib/liblib_ex3d_drama.a and b/lib_ex3d/lib_ex3d/lib/liblib_ex3d_drama.a differ
diff --git a/lib_ex3d/lib_ex3d/lib/liblib_ex3d_game.a b/lib_ex3d/lib_ex3d/lib/liblib_ex3d_game.a
index 2978e96..d561d72 100644
Binary files a/lib_ex3d/lib_ex3d/lib/liblib_ex3d_game.a and b/lib_ex3d/lib_ex3d/lib/liblib_ex3d_game.a differ
diff --git a/lib_ex3d/lib_ex3d/lib/liblib_ex3d_movie.a b/lib_ex3d/lib_ex3d/lib/liblib_ex3d_movie.a
index a706cd6..4f868e1 100644
Binary files a/lib_ex3d/lib_ex3d/lib/liblib_ex3d_movie.a and b/lib_ex3d/lib_ex3d/lib/liblib_ex3d_movie.a differ
diff --git a/lib_ex3d/lib_ex3d/lib/liblib_ex3d_music.a b/lib_ex3d/lib_ex3d/lib/liblib_ex3d_music.a
index f677407..1c05cd8 100644
Binary files a/lib_ex3d/lib_ex3d/lib/liblib_ex3d_music.a and b/lib_ex3d/lib_ex3d/lib/liblib_ex3d_music.a differ
diff --git a/lib_ex3d/lib_ex3d/lib/liblib_ex3d_stereo_2k.a b/lib_ex3d/lib_ex3d/lib/liblib_ex3d_stereo_2k.a
index 97c4196..1824e78 100644
Binary files a/lib_ex3d/lib_ex3d/lib/liblib_ex3d_stereo_2k.a and b/lib_ex3d/lib_ex3d/lib/liblib_ex3d_stereo_2k.a differ
diff --git a/lib_ex3d/lib_ex3d/lib/liblib_ex3d_stereo_8k.a b/lib_ex3d/lib_ex3d/lib/liblib_ex3d_stereo_8k.a
index 4bee7f5..743beea 100644
Binary files a/lib_ex3d/lib_ex3d/lib/liblib_ex3d_stereo_8k.a and b/lib_ex3d/lib_ex3d/lib/liblib_ex3d_stereo_8k.a differ
diff --git a/sw_usb_audio/app_usb_aud_phaten_golden/src/extensions/dsp.c b/sw_usb_audio/app_usb_aud_phaten_golden/src/extensions/dsp.c
index f1353b8..67c1772 100644
--- a/sw_usb_audio/app_usb_aud_phaten_golden/src/extensions/dsp.c
+++ b/sw_usb_audio/app_usb_aud_phaten_golden/src/extensions/dsp.c
@@ -200,9 +200,7 @@ void UserBufferManagement(unsigned sampsFromUsbToAudio[], unsigned sampsFromAudi
         chan_in_buf_word(uc_dsp_to_dnr_t1, (uint32_t *)(&ubm_micOut[0]), DSP_BLOCK_LENGTH);
         chan_in_buf_word(uc_dsp_to_dnr_t1, (uint32_t *)(&ubm_micOut[1]), DSP_BLOCK_LENGTH);
 #endif
-    }
-#if EQ_EN
-	buffer_exchange(uc_eq_data, sampsFromUsbToAudio);
+    }	buffer_exchange(uc_eq_data, sampsFromUsbToAudio);
 #endif
     sampsFromAudioToUsb[0] = sampsFromUsbToAudio[0];
     sampsFromAudioToUsb[1] = sampsFromUsbToAudio[1];
@@ -232,6 +230,8 @@ typedef enum {
 	CMD_TEST_CANCEL = 0x90,
 	CMD_TEST_STEP = 0x91,
 	CMD_TEST_ROTATE = 0x92,
+	CMD_EXPAND_GAIN = 0x93, // dhlee++
+	CMD_REDUCE_GAIN = 0x94, // dhlee++
 } PlbkCmdCode;
 
 #define CMD_SET(item)                  ((item) & ~0x0100)
@@ -554,6 +554,43 @@ void hid_receive_task_in_c(unsigned char * RcvData, unsigned * SendData)
         }			
         break;
 
+    // dhlee++
+
+      case CMD_EXPAND_GAIN:
+        if (CMD_SET(CMD_EXPAND_GAIN) == command_code) {
+            int32_t idBGain;
+            memcpy(&idBGain, &pRcvBuf[1], 4);
+            printf("Set CMD_EXPAND_GAIN : %d\r\n", idBGain);
+            if((0 <= idBGain) && (idBGain <= 20)) {
+                Ex3dExpandGain = idBGain;
+                EX3DAudio_SetExpandGain(Ex3dExpandGain);
+            } else {
+                pSendBuf[idx] = 0xFFFFFFFF;
+            }
+        } else {  // Get
+            printf("Get CMD_EXPAND_GAIN : %d\r\n", Ex3dExpandGain);
+            memcpy(&pSendBuf[idx], &Ex3dExpandGain, 4);
+        }			
+        break;	
+
+    case CMD_REDUCE_GAIN:
+        if (CMD_SET(CMD_REDUCE_GAIN) == command_code) {
+            int32_t idBGain;
+            memcpy(&idBGain, &pRcvBuf[1], 4);
+            printf("Set CMD_REDUCE_GAIN : %d\r\n", idBGain);
+            if((-20 <= idBGain) && (idBGain <= 0)) {
+                Ex3dReduceGain = idBGain;
+                EX3DAudio_SetReduceGain(Ex3dReduceGain);
+            } else {
+                pSendBuf[idx] = 0xFFFFFFFF;
+            }
+        } else {  // Get
+            printf("Get CMD_REDUCE_GAIN : %d\r\n", Ex3dReduceGain);
+            memcpy(&pSendBuf[idx], &Ex3dReduceGain, 4);
+        }			
+        break;	
+
+
     default:
         break;
     }