diff --git a/src/computer.c b/src/computer.c
index 1c19ff4..469c936 100644
--- a/src/computer.c
+++ b/src/computer.c
@@ -1344,7 +1344,7 @@ void Z80free_Out (register word Port, register byte Value) {
 
 	if (((Port|maskport) == 0xBFFD)&&(ordenador.ay_emul)) {
 		ordenador.ay_registers[ordenador.ay_latch] = (unsigned char) Value;
-		if (ordenador.ay_latch == 13)
+		if (ordenador.ay_latch == 13) //Envelope shape
 			ordenador.ay_envel_way = 2;	// start cycle
 	}
 }
diff --git a/src/gui_sdl.c b/src/gui_sdl.c
index c2bb719..a78188d 100644
--- a/src/gui_sdl.c
+++ b/src/gui_sdl.c
@@ -369,6 +369,7 @@ static void emulation_settings(void)
 {
 	unsigned int submenus[7],submenus_old[7];
 	int opt, i;
+	unsigned char old_mode;
 	
 	memset(submenus, 0, sizeof(submenus));
 	
@@ -381,6 +382,7 @@ static void emulation_settings(void)
 	submenus[6] = !ordenador.ay_emul;
 	
 	for (i=0; i<7; i++) submenus_old[i] = submenus[i];
+	old_mode=ordenador.mode128k;
 	
 	opt = menu_select_title("Emulation settings menu",
 			emulation_messages, submenus);
@@ -388,7 +390,7 @@ static void emulation_settings(void)
 		return;
 	
 	set_machine_model(submenus[0]);
-	if (submenus[0] != submenus_old[0]) ResetComputer(); else 
+	if (old_mode!=ordenador.mode128k) ResetComputer(); else 
 	ordenador.ay_emul = !submenus[6];
 	
 	ordenador.volume = submenus[1]*2; //I should use set_volume() ?
@@ -982,7 +984,7 @@ static void save_load_general_configurations(int which)
 {
 
 	int retorno;
-	unsigned char old_bw,old_model;
+	unsigned char old_bw,old_mode;
 	char config_path[1024];
 	int length;
 	FILE *fconfig; 
@@ -1009,10 +1011,10 @@ static void save_load_general_configurations(int which)
 			if (which == 0) // Load config file
 			{
 				old_bw = ordenador.bw;
-				old_model= get_machine_model();
+				old_mode= ordenador.mode128k;
 				if (!load_config(&ordenador,config_path)) msgInfo("General confs loaded",3000,NULL);
 				if (old_bw!=ordenador.bw) computer_set_palete();
-				if (old_model != get_machine_model()) ResetComputer();
+				if (old_mode != ordenador.mode128k) ResetComputer();
 				break;
 			}
 			else // Delete config file
diff --git a/src/sound.c b/src/sound.c
index bc74df3..8baf60e 100644
--- a/src/sound.c
+++ b/src/sound.c
@@ -495,7 +495,7 @@ void sound_play() {
 #ifdef GEKKO
 	case SOUND_ASND: // ASND
 		if (!started_sound_asnd) {
-		ASND_SetVoice(1,VOICE_MONO_8BIT,48000,0,sound[0],ordenador.buffer_len,
+		ASND_SetVoice(1,VOICE_MONO_8BIT_U,48000,0,sound[0],ordenador.buffer_len,
 		MID_VOLUME, MID_VOLUME, callback);
 		started_sound_asnd = 1;
 		}
diff --git a/src/spk_ay.c b/src/spk_ay.c
index 8769481..509408d 100644
--- a/src/spk_ay.c
+++ b/src/spk_ay.c
@@ -230,7 +230,7 @@ inline void play_ay (unsigned int tstados) {
 				(unsigned
 				 char) ((((unsigned int) ordenador.
 					  ay_envel_value)) *
-					(unsigned int) ordenador.volume) / 15;
+					(unsigned int) ordenador.volume) / 10;
 		else
 			ordenador.vol_a =
 				(unsigned
@@ -238,14 +238,14 @@ inline void play_ay (unsigned int tstados) {
 							  ay_registers[8] &
 							  0x0F)) *
 					 (unsigned int) ordenador.volume) /
-					15);
+					10);
 
 		if (ordenador.ay_registers[10] & 0x10)
 			ordenador.vol_c =
 				(unsigned
 				 char) ((((unsigned int) ordenador.
 					  ay_envel_value)) *
-					(unsigned int) ordenador.volume) / 15;
+					(unsigned int) ordenador.volume) / 10;
 		else
 			ordenador.vol_c =
 				(unsigned
@@ -253,14 +253,14 @@ inline void play_ay (unsigned int tstados) {
 							  ay_registers[10] &
 							  0x0F)) *
 					 (unsigned int) ordenador.volume) /
-					15);
+					10);
 
 		if (ordenador.ay_registers[9] & 0x10)
 			ordenador.vol_b =
 				(unsigned
 				 char) ((((unsigned int) ordenador.
 					  ay_envel_value)) *
-					(unsigned int) ordenador.volume) / 15;
+					(unsigned int) ordenador.volume) / 10;
 		else
 			ordenador.vol_b =
 				(unsigned
@@ -268,7 +268,7 @@ inline void play_ay (unsigned int tstados) {
 							  ay_registers[9] &
 							  0x0F)) *
 					 (unsigned int) ordenador.volume) /
-					15);
+					10);
 
 	}
 }
@@ -292,7 +292,7 @@ inline void play_sound (unsigned int tstados) {
 			for (bucle = 0; bucle < ordenador.increment; bucle++) {
 				sample_v = ordenador.sample1b[bucle];
 				if ((ordenador.sound_bit) && (sample_v)) 
-					ordenador.sound_current_value=ordenador.volume*4;
+					ordenador.sound_current_value=ordenador.volume*6;
 					else ordenador.sound_current_value=0;
 				value = ordenador.sound_current_value;