diff --git a/profiles/audio/a2dp-codecs.h b/profiles/audio/a2dp-codecs.h
index 649e241..6f667d3 100644
--- a/profiles/audio/a2dp-codecs.h
+++ b/profiles/audio/a2dp-codecs.h
@@ -200,6 +200,17 @@
 #define LDAC_VENDOR_ID			0x0000012d
 #define LDAC_CODEC_ID			0x00aa
 
+#define LDAC_SAMPLING_FREQ_44100	0x20
+#define LDAC_SAMPLING_FREQ_48000	0x10
+#define LDAC_SAMPLING_FREQ_88200	0x08
+#define LDAC_SAMPLING_FREQ_96000	0x04
+#define LDAC_SAMPLING_FREQ_176400	0x02
+#define LDAC_SAMPLING_FREQ_192000	0x01
+
+#define LDAC_CHANNEL_MODE_MONO		0x04
+#define LDAC_CHANNEL_MODE_DUAL		0x02
+#define LDAC_CHANNEL_MODE_STEREO	0x01
+
 typedef struct {
 	uint8_t vendor_id4;
 	uint8_t vendor_id3;
@@ -225,6 +236,12 @@ typedef struct {
 		.codec_id1 = (((c) >> 8) & 0xff), \
 	})
 
+typedef struct {
+	a2dp_vendor_codec_t info;
+	uint8_t frequency;
+	uint8_t channel_mode;
+} __attribute__ ((packed)) a2dp_ldac_t;
+
 #if defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && \
 	__BYTE_ORDER == __LITTLE_ENDIAN
 
@@ -268,11 +285,6 @@ typedef struct {
 	uint8_t frequency:4;
 } __attribute__ ((packed)) a2dp_aptx_t;
 
-typedef struct {
-	a2dp_vendor_codec_t info;
-	uint8_t unknown[2];
-} __attribute__ ((packed)) a2dp_ldac_t;
-
 #elif defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && \
 	__BYTE_ORDER == __BIG_ENDIAN
 
@@ -316,11 +328,6 @@ typedef struct {
 	uint8_t channel_mode:4;
 } __attribute__ ((packed)) a2dp_aptx_t;
 
-typedef struct {
-	a2dp_vendor_codec_t info;
-	uint8_t unknown[2];
-} __attribute__ ((packed)) a2dp_ldac_t;
-
 #else
 #error "Unknown byte order"
 #endif
diff --git a/tools/avinfo.c b/tools/avinfo.c
index 424221f..1852b24 100644
--- a/tools/avinfo.c
+++ b/tools/avinfo.c
@@ -204,8 +204,8 @@ static void print_ldac(a2dp_ldac_t *ldac, uint8_t size)
 		return;
 	}
 
-	printf("\n\t\t\tUnknown: %02x %02x", ldac->unknown[0],
-							ldac->unknown[1]);
+	printf("\n\t\t\tUnknown: %02x %02x", ldac->frequency,
+							ldac->channel_mode);
 
 	printf("\n");
 }