diff --git a/scripts/src/sound.lua b/scripts/src/sound.lua
index eff666cd356..bda7e45bc0c 100644
--- a/scripts/src/sound.lua
+++ b/scripts/src/sound.lua
@@ -1538,13 +1538,13 @@ end
 
 ---------------------------------------------------
 --
---@src/devices/sound/mu100b.h,SOUNDS["MU100B"] = true
+--@src/devices/sound/xt446.h,SOUNDS["XT446"] = true
 ---------------------------------------------------
 
-if (SOUNDS["MU100B"]~=null) then
+if (SOUNDS["XT446"]~=null) then
 	files {
-		MAME_DIR .. "src/devices/sound/mu100b.cpp",
-		MAME_DIR .. "src/devices/sound/mu100b.h",
+		MAME_DIR .. "src/devices/sound/xt446.cpp",
+		MAME_DIR .. "src/devices/sound/xt446.h",
 	}
 end
 
diff --git a/scripts/target/mame/arcade.lua b/scripts/target/mame/arcade.lua
index 1c4f68c9e73..88dcc0c9d2b 100644
--- a/scripts/target/mame/arcade.lua
+++ b/scripts/target/mame/arcade.lua
@@ -294,7 +294,7 @@ SOUNDS["TT5665"] = true
 --SOUNDS["RP2C33_SOUND"] = true
 --SOUNDS["UDA1344"] = true
 SOUNDS["SWP30"] = true
-SOUNDS["MU100B"] = true
+SOUNDS["XT446"] = true
 
 --------------------------------------------------
 -- specify available video cores
diff --git a/scripts/target/mame/mess.lua b/scripts/target/mame/mess.lua
index 20dd16c820e..ee82fbf64ce 100644
--- a/scripts/target/mame/mess.lua
+++ b/scripts/target/mame/mess.lua
@@ -314,7 +314,7 @@ SOUNDS["IOPSPU"] = true
 SOUNDS["SWP00"] = true
 SOUNDS["SWP20"] = true
 SOUNDS["SWP30"] = true
---SOUNDS["MU100B"] = true
+--SOUNDS["XT446"] = true
 SOUNDS["S_DSP"] = true
 SOUNDS["ROLANDPCM"] = true
 --SOUNDS["TT5665"] = true
diff --git a/src/devices/sound/mu100b.cpp b/src/devices/sound/xt446.cpp
similarity index 75%
rename from src/devices/sound/mu100b.cpp
rename to src/devices/sound/xt446.cpp
index 30fb9cf5514..9dc3053f1ff 100644
--- a/src/devices/sound/mu100b.cpp
+++ b/src/devices/sound/xt446.cpp
@@ -3,25 +3,25 @@
 
 /*************************************************************************************
 
-    Yamaha MU-100B : 32-voice polyphonic/multitimbral General MIDI/GS/XG tone modules
+    Yamaha XT446 : 32-voice polyphonic/multitimbral General MIDI/GS/XG tone modules
 
-    Embedded version
+    Embedded version of the MU100B
 
 **************************************************************************************/
 
 #include "emu.h"
 
-#include "mu100b.h"
+#include "xt446.h"
 
 #include "bus/midi/midiinport.h"
 #include "bus/midi/midioutport.h"
 
-DEFINE_DEVICE_TYPE(MU100B, mu100b_device, "mu100b_emb", "Yamaha MU100B synth (embedded version)")
+DEFINE_DEVICE_TYPE(XT446, xt446_device, "xt446", "Yamaha XT446 synth (embedded MU100B)")
 
 #define ROM_LOAD16_WORD_SWAP_BIOS(bios,name,offset,length,hash) \
 		ROMX_LOAD(name, offset, length, hash, ROM_GROUPWORD | ROM_REVERSE | ROM_BIOS(bios))
 
-ROM_START( mu100b )
+ROM_START( xt446 )
 	ROM_REGION( 0x200000, "maincpu", 0 )
 	// MU-100B v1.08 (Nov. 28, 1997)
 	ROM_LOAD16_WORD_SWAP( "xu50710-m27c160.bin", 0x000000, 0x200000, CRC(4b10bd27) SHA1(12d7c6e1bce7974b34916e1bfa5057ab55867476) )
@@ -35,8 +35,8 @@ ROM_START( mu100b )
 	ROM_LOAD32_WORD( "xt463a0.ic38", 0x1000002, 0x400000, CRC(cce5f8d3) SHA1(bdca8c5158f452f2b5535c7d658c9b22c6d66048) )
 ROM_END
 
-mu100b_device::mu100b_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
-	: device_t(mconfig, MU100B, tag, owner, clock)
+xt446_device::xt446_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+	: device_t(mconfig, XT446, tag, owner, clock)
 	, device_mixer_interface(mconfig, *this, 2)
 	, m_maincpu(*this, "maincpu")
 	, m_swp30(*this, "swp30")
@@ -44,27 +44,27 @@ mu100b_device::mu100b_device(const machine_config &mconfig, const char *tag, dev
 {
 }
 
-const tiny_rom_entry *mu100b_device::device_rom_region() const
+const tiny_rom_entry *xt446_device::device_rom_region() const
 {
-	return ROM_NAME(mu100b);
+	return ROM_NAME(xt446);
 }
 
-void mu100b_device::device_start()
+void xt446_device::device_start()
 {
 }
 
-void mu100b_device::device_reset()
+void xt446_device::device_reset()
 {
 }
 
-void mu100b_device::mu100_map(address_map &map)
+void xt446_device::xt446_map(address_map &map)
 {
 	map(0x000000, 0x1fffff).rom().region("maincpu", 0);
 	map(0x200000, 0x21ffff).ram(); // 128K work RAM
 	map(0x400000, 0x401fff).m(m_swp30, FUNC(swp30_device::map));
 }
 
-void mu100b_device::mu100_iomap(address_map &map)
+void xt446_device::xt446_iomap(address_map &map)
 {
 	map(h8_device::ADC_0, h8_device::ADC_0).lr16(NAME([]() -> u16 { return 0; }));
 	map(h8_device::ADC_1, h8_device::ADC_1).lr16(NAME([]() -> u16 { return 0; }));
@@ -76,21 +76,21 @@ void mu100b_device::mu100_iomap(address_map &map)
 	map(h8_device::ADC_7, h8_device::ADC_7).lr16(NAME([]() -> u16 { return 0x200; }));
 }
 
-void mu100b_device::swp30_map(address_map &map)
+void xt446_device::swp30_map(address_map &map)
 {
 	map(0x000000*4, 0x200000*4-1).rom().region("swp30",         0).mirror(4*0x200000);
 	map(0x400000*4, 0x500000*4-1).rom().region("swp30",  0x800000).mirror(4*0x300000);
 	map(0x800000*4, 0xa00000*4-1).rom().region("swp30", 0x1000000).mirror(4*0x200000);
 }
 
-void mu100b_device::device_add_mconfig(machine_config &config)
+void xt446_device::device_add_mconfig(machine_config &config)
 {
 	H8S2655(config, m_maincpu, 16_MHz_XTAL);
-	m_maincpu->set_addrmap(AS_PROGRAM, &mu100b_device::mu100_map);
-	m_maincpu->set_addrmap(AS_IO, &mu100b_device::mu100_iomap);
+	m_maincpu->set_addrmap(AS_PROGRAM, &xt446_device::xt446_map);
+	m_maincpu->set_addrmap(AS_IO, &xt446_device::xt446_iomap);
 
 	SWP30(config, m_swp30);
-	m_swp30->set_addrmap(0, &mu100b_device::swp30_map);
+	m_swp30->set_addrmap(0, &xt446_device::swp30_map);
 	m_swp30->add_route(0, *this, 1.0, AUTO_ALLOC_INPUT, 0);
 	m_swp30->add_route(1, *this, 1.0, AUTO_ALLOC_INPUT, 1);
 }
diff --git a/src/devices/sound/mu100b.h b/src/devices/sound/xt446.h
similarity index 63%
rename from src/devices/sound/mu100b.h
rename to src/devices/sound/xt446.h
index 1c0fd25abdd..5404dfd3466 100644
--- a/src/devices/sound/mu100b.h
+++ b/src/devices/sound/xt446.h
@@ -3,22 +3,22 @@
 
 /*************************************************************************************
 
-    Yamaha MU-100B : 32-voice polyphonic/multitimbral General MIDI/GS/XG tone modules
+    Yamaha XT446 : 32-voice polyphonic/multitimbral General MIDI/GS/XG tone modules
 
-    Embedded version
+    Embedded version of the MU100B
 
 **************************************************************************************/
 
-#ifndef DEVICE_SOUND_MU100B_H
-#define DEVICE_SOUND_MU100B_H
+#ifndef DEVICE_SOUND_XT446_H
+#define DEVICE_SOUND_XT446_H
 
 #include "cpu/h8/h8s2655.h"
 #include "sound/swp30.h"
 
-class mu100b_device : public device_t, public device_mixer_interface
+class xt446_device : public device_t, public device_mixer_interface
 {
 public:
-	mu100b_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
+	xt446_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
 
 	void midi_w(int state) { m_midi_serial->rx_w(state); }
 
@@ -33,11 +33,11 @@ private:
 	required_device<swp30_device> m_swp30;
 	required_device<h8_sci_device> m_midi_serial;
 
-	void mu100_iomap(address_map &map);
-	void mu100_map(address_map &map);
+	void xt446_iomap(address_map &map);
+	void xt446_map(address_map &map);
 	void swp30_map(address_map &map);
 };
 
-DECLARE_DEVICE_TYPE(MU100B, mu100b_device)
+DECLARE_DEVICE_TYPE(XT446, xt446_device)
 
 #endif
diff --git a/src/mame/drivers/firebeat.cpp b/src/mame/drivers/firebeat.cpp
index 781cf5129f9..99b80073675 100644
--- a/src/mame/drivers/firebeat.cpp
+++ b/src/mame/drivers/firebeat.cpp
@@ -153,7 +153,7 @@
 #include "machine/rtc65271.h"
 #include "machine/timer.h"
 #include "sound/cdda.h"
-#include "sound/mu100b.h"
+#include "sound/xt446.h"
 #include "sound/rf5c400.h"
 #include "sound/ymz280b.h"
 #include "video/k057714.h"
@@ -1881,10 +1881,10 @@ void firebeat_kbm_state::firebeat_kbm(machine_config &config)
 	midi_chan0.out_int_callback().set(FUNC(firebeat_kbm_state::midi_keyboard_right_irq_callback));
 
 	// Synth card
-	auto &mu100b(MU100B(config, "mu100b"));
-	midi_chan1.out_tx_callback().set(mu100b, FUNC(mu100b_device::midi_w));
-	mu100b.add_route(0, "lspeaker", 1.0);
-	mu100b.add_route(1, "rspeaker", 1.0);
+	auto &xt446(XT446(config, "xt446"));
+	midi_chan1.out_tx_callback().set(xt446, FUNC(xt446_device::midi_w));
+	xt446.add_route(0, "lspeaker", 1.0);
+	xt446.add_route(1, "rspeaker", 1.0);
 }
 
 void firebeat_kbm_state::firebeat_kbm_map(address_map &map)