diff --git a/src/devices/sound/aica.cpp b/src/devices/sound/aica.cpp
index ad7d5467c3d..3c66130fb77 100644
--- a/src/devices/sound/aica.cpp
+++ b/src/devices/sound/aica.cpp
@@ -72,10 +72,10 @@
 #define IMXL(slot)      ((slot->udata.data[0x20/2]>>0x4)&0x000F)
 
 #define DISDL(slot)     ((slot->udata.data[0x24/2]>>0x8)&0x000F)
-#define DIPAN(slot)     ((slot->udata.data[0x24/2]>>0x0)&0x001F)
+#define DIPAN(slot)     (MONO() ? 0 : ((slot->udata.data[0x24/2]>>0x0)&0x001F))
 
 #define EFSDL(slot)     ((m_EFSPAN[slot*4]>>8)&0x000f)
-#define EFPAN(slot)     ((m_EFSPAN[slot*4]>>0)&0x001f)
+#define EFPAN(slot)     (MONO() ? 0 : ((m_EFSPAN[slot*4]>>0)&0x001f))
 
 //Unimplemented
 #define Q(slot)         ((slot->udata.data[0x28/2]>>0x0)&0x001F) // (0.75 × register value - 3)
@@ -99,6 +99,7 @@ static constexpr double DRTimes[64]={100000/*infinity*/,100000/*infinity*/,11820
 					920.0,790.0,690.0,550.0,460.0,390.0,340.0,270.0,230.0,200.0,170.0,140.0,110.0,98.0,85.0,68.0,57.0,49.0,43.0,34.0,
 					28.0,25.0,22.0,18.0,14.0,12.0,11.0,8.5,7.1,6.1,5.4,4.3,3.6,3.1};
 
+#define MONO(aica)      ((m_udata.data[0]>>0x0)&0x8000)
 #define MEM8MB(aica)    ((m_udata.data[0]>>0x0)&0x0200)
 #define DAC18B(aica)    ((m_udata.data[0]>>0x0)&0x0100)
 #define MVOL(aica)      ((m_udata.data[0]>>0x0)&0x000F)
@@ -505,24 +506,7 @@ void aica_device::Init()
 
 	m_ARTABLE[0]=m_DRTABLE[0]=0;    //Infinite time
 	m_ARTABLE[1]=m_DRTABLE[1]=0;    //Infinite time
-	for(i=2;i<64;++i)
-	{
-		double t,step,scale;
-		t=ARTimes[i];   //In ms
-		if(t!=0.0)
-		{
-			step=(1023*1000.0)/(44100.0*t);
-			scale=(double) (1<<EG_SHIFT);
-			m_ARTABLE[i]=(int) (step*scale);
-		}
-		else
-			m_ARTABLE[i]=1024<<EG_SHIFT;
-
-		t=DRTimes[i];   //In ms
-		step=(1023*1000.0)/(44100.0*t);
-		scale=(double) (1<<EG_SHIFT);
-		m_DRTABLE[i]=(int) (step*scale);
-	}
+	ClockChange();
 
 	// make sure all the slots are off
 	for(i=0;i<64;++i)
@@ -535,8 +519,6 @@ void aica_device::Init()
 	}
 
 	AICALFO_Init();
-	m_buffertmpl=make_unique_clear<int32_t[]>(44100);
-	m_buffertmpr=make_unique_clear<int32_t[]>(44100);
 
 	// no "pend"
 	m_udata.data[0xa0/2] = 0;
@@ -546,6 +528,32 @@ void aica_device::Init()
 	m_TimCnt[2] = 0xffff;
 }
 
+void aica_device::ClockChange()
+{
+	m_rate = ((double)clock()) / 512.0;
+	for(int i=2;i<64;++i)
+	{
+		double t,step,scale;
+		t=ARTimes[i];   //In ms
+		if(t!=0.0)
+		{
+			step=(1023*1000.0)/(m_rate*t);
+			scale=(double) (1<<EG_SHIFT);
+			m_ARTABLE[i]=(int) (step*scale);
+		}
+		else
+			m_ARTABLE[i]=1024<<EG_SHIFT;
+
+		t=DRTimes[i];   //In ms
+		step=(1023*1000.0)/(m_rate*t);
+		scale=(double) (1<<EG_SHIFT);
+		m_DRTABLE[i]=(int) (step*scale);
+	}
+
+	m_buffertmpl.resize((int)m_rate, 0);
+	m_buffertmpr.resize((int)m_rate, 0);
+}
+
 void aica_device::UpdateSlotReg(int s,int r)
 {
 	AICA_SLOT *slot=m_Slots+s;
@@ -675,10 +683,10 @@ void aica_device::UpdateReg(address_space &space, int reg)
 
 				if ((m_udata.data[0x90/2]&0xff) != 255)
 				{
-					time = (44100 / m_TimPris[0]) / (255-(m_udata.data[0x90/2]&0xff));
+					time = (clock() / m_TimPris[0]) / (255-(m_udata.data[0x90/2]&0xff));
 					if (time)
 					{
-						m_timerA->adjust(attotime::from_hz(time));
+						m_timerA->adjust(attotime::from_ticks(512, time));
 					}
 				}
 			}
@@ -694,10 +702,10 @@ void aica_device::UpdateReg(address_space &space, int reg)
 
 				if ((m_udata.data[0x94/2]&0xff) != 255)
 				{
-					time = (44100 / m_TimPris[1]) / (255-(m_udata.data[0x94/2]&0xff));
+					time = (clock() / m_TimPris[1]) / (255-(m_udata.data[0x94/2]&0xff));
 					if (time)
 					{
-						m_timerB->adjust(attotime::from_hz(time));
+						m_timerB->adjust(attotime::from_ticks(512, time));
 					}
 				}
 			}
@@ -713,10 +721,10 @@ void aica_device::UpdateReg(address_space &space, int reg)
 
 				if ((m_udata.data[0x98/2]&0xff) != 255)
 				{
-					time = (44100 / m_TimPris[2]) / (255-(m_udata.data[0x98/2]&0xff));
+					time = (clock() / m_TimPris[2]) / (255-(m_udata.data[0x98/2]&0xff));
 					if (time)
 					{
-						m_timerC->adjust(attotime::from_hz(time));
+						m_timerC->adjust(attotime::from_ticks(512, time));
 					}
 				}
 			}
@@ -1305,8 +1313,8 @@ void aica_device::DoMasterSamples(int nsamples)
 			}
 		}
 
-		*bufl++ = ICLIP16(smpl>>3);
-		*bufr++ = ICLIP16(smpr>>3);
+		*bufl++ = (ICLIP16(smpl>>3)*m_LPANTABLE[MVOL()<<0xd])>>SHIFT;
+		*bufr++ = (ICLIP16(smpr>>3)*m_LPANTABLE[MVOL()<<0xd])>>SHIFT;
 	}
 }
 
@@ -1425,7 +1433,7 @@ void aica_device::device_start()
 	m_irq_cb.resolve_safe();
 	m_main_irq_cb.resolve_safe();
 
-	m_stream = machine().sound().stream_alloc(*this, 0, 2, 44100);
+	m_stream = machine().sound().stream_alloc(*this, 0, 2, (int)m_rate);
 
 	// save state
 	save_item(NAME(m_IrqTimA));
@@ -1442,6 +1450,17 @@ void aica_device::device_start()
 	save_item(NAME(m_TimCnt),3);
 }
 
+//-------------------------------------------------
+//  device_clock_changed - called if the clock
+//  changes
+//-------------------------------------------------
+
+void aica_device::device_clock_changed()
+{
+	ClockChange();
+	m_stream->set_sample_rate((int)m_rate);
+}
+
 void aica_device::set_ram_base(void *base, int size)
 {
 	m_AICARAM = (unsigned char *)base;
@@ -1481,12 +1500,13 @@ READ16_MEMBER( aica_device::midi_out_r )
 	return val;
 }
 
-DEFINE_DEVICE_TYPE(AICA, aica_device, "aica", "AICA")
+DEFINE_DEVICE_TYPE(AICA, aica_device, "aica", "Yamaha AICA")
 
 aica_device::aica_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
 	: device_t(mconfig, AICA, tag, owner, clock),
 		device_sound_interface(mconfig, *this),
 		m_master(false),
+		m_rate(44100.0),
 		m_roffset(0),
 		m_irq_cb(*this),
 		m_main_irq_cb(*this),
@@ -1498,8 +1518,6 @@ aica_device::aica_device(const machine_config &mconfig, const char *tag, device_
 		m_AICARAM_LENGTH(0),
 		m_RAM_MASK(0),
 		m_RAM_MASK16(0),
-		m_buffertmpl(nullptr),
-		m_buffertmpr(nullptr),
 		m_IrqTimA(0),
 		m_IrqTimBC(0),
 		m_IrqMidi(0),
@@ -1651,7 +1669,7 @@ signed int aica_device::AICAALFO_Step(AICA_LFO_t *LFO)
 
 void aica_device::AICALFO_ComputeStep(AICA_LFO_t *LFO,uint32_t LFOF,uint32_t LFOWS,uint32_t LFOS,int ALFO)
 {
-	float step=(float) LFOFreq[LFOF]*256.0f/(float)44100.0f;
+	float step=(float) LFOFreq[LFOF]*256.0f/(float)m_rate;
 	LFO->phase_step=(unsigned int) ((float) (1<<LFO_SHIFT)*step);
 	if(ALFO)
 	{
diff --git a/src/devices/sound/aica.h b/src/devices/sound/aica.h
index 91e7be6f6d2..3c78692ee97 100644
--- a/src/devices/sound/aica.h
+++ b/src/devices/sound/aica.h
@@ -51,6 +51,7 @@ public:
 protected:
 	// device-level overrides
 	virtual void device_start() override;
+	virtual void device_clock_changed() override;
 
 	// sound stream update overrides
 	virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;
@@ -128,6 +129,7 @@ private:
 	void StartSlot(AICA_SLOT *slot);
 	void StopSlot(AICA_SLOT *slot,int keyoff);
 	void Init();
+	void ClockChange();
 	void UpdateSlotReg(int s,int r);
 	void UpdateReg(address_space &space, int reg);
 	void UpdateSlotRegR(int slot,int reg);
@@ -145,6 +147,7 @@ private:
 	void AICALFO_ComputeStep(AICA_LFO_t *LFO,uint32_t LFOF,uint32_t LFOWS,uint32_t LFOS,int ALFO);
 
 	bool m_master;
+	double m_rate;
 	int m_roffset;                /* offset in the region */
 	devcb_write_line m_irq_cb;
 	devcb_write_line m_main_irq_cb;
@@ -165,8 +168,8 @@ private:
 	uint32_t m_AICARAM_LENGTH, m_RAM_MASK, m_RAM_MASK16;
 	sound_stream * m_stream;
 
-	std::unique_ptr<int32_t[]> m_buffertmpl;
-	std::unique_ptr<int32_t[]> m_buffertmpr;
+	std::vector<int32_t> m_buffertmpl;
+	std::vector<int32_t> m_buffertmpr;
 
 	uint32_t m_IrqTimA;
 	uint32_t m_IrqTimBC;
diff --git a/src/mame/drivers/dccons.cpp b/src/mame/drivers/dccons.cpp
index 66e8a137146..7735b9f98bc 100644
--- a/src/mame/drivers/dccons.cpp
+++ b/src/mame/drivers/dccons.cpp
@@ -621,12 +621,13 @@ MACHINE_CONFIG_START(dc_cons_state::dc)
 
 	SPEAKER(config, "lspeaker").front_left();
 	SPEAKER(config, "rspeaker").front_right();
-	MCFG_DEVICE_ADD("aica", AICA, 0)
+
+	MCFG_DEVICE_ADD("aica", AICA, (XTAL(33'868'800)*2)/3) // 67.7376MHz(2*33.8688MHz), div 3 for audio block
 	MCFG_AICA_MASTER
 	MCFG_AICA_IRQ_CB(WRITELINE(*this, dc_state, aica_irq))
 	MCFG_AICA_MAIN_IRQ_CB(WRITELINE(*this, dc_state, sh4_aica_irq))
 	MCFG_SOUND_ROUTE(0, "lspeaker", 1.0)
-	MCFG_SOUND_ROUTE(0, "rspeaker", 1.0)
+	MCFG_SOUND_ROUTE(1, "rspeaker", 1.0)
 
 	MCFG_AICARTC_ADD("aicartc", XTAL(32'768))
 
diff --git a/src/mame/drivers/hikaru.cpp b/src/mame/drivers/hikaru.cpp
index 2904d7d047f..677636d5e2a 100644
--- a/src/mame/drivers/hikaru.cpp
+++ b/src/mame/drivers/hikaru.cpp
@@ -531,9 +531,14 @@ MACHINE_CONFIG_START(hikaru_state::hikaru)
 
 //  SPEAKER(config, "lspeaker").front_left();
 //  SPEAKER(config, "rspeaker").front_right();
-//  MCFG_DEVICE_ADD("aica", AICA, 0)
+
+//  MCFG_DEVICE_ADD("aica", AICA, (XTAL(33'868'800)*2)/3) // 67.7376MHz(2*33.8688MHz), div 3 for audio block // 33.8688MHz on Board
 //  MCFG_SOUND_ROUTE(0, "lspeaker", 2.0)
-//  MCFG_SOUND_ROUTE(0, "rspeaker", 2.0)
+//  MCFG_SOUND_ROUTE(1, "rspeaker", 2.0)
+
+//  MCFG_DEVICE_ADD("aica_pcb", AICA, (XTAL(33'868'800)*2)/3) // AICA PCB
+//  MCFG_SOUND_ROUTE(0, "lspeaker", 2.0)
+//  MCFG_SOUND_ROUTE(1, "rspeaker", 2.0)
 MACHINE_CONFIG_END
 
 
diff --git a/src/mame/drivers/naomi.cpp b/src/mame/drivers/naomi.cpp
index b394f9b94cd..c22823d8c85 100644
--- a/src/mame/drivers/naomi.cpp
+++ b/src/mame/drivers/naomi.cpp
@@ -2923,11 +2923,11 @@ MACHINE_CONFIG_START(dc_state::naomi_aw_base)
 
 	SPEAKER(config, "lspeaker").front_left();
 	SPEAKER(config, "rspeaker").front_right();
-	MCFG_DEVICE_ADD("aica", AICA, 0)
+
+	MCFG_DEVICE_ADD("aica", AICA, (XTAL(33'868'800)*2)/3) // 67.7376MHz(2*33.8688MHz), div 3 for audio block
 	MCFG_AICA_MASTER
 	MCFG_AICA_IRQ_CB(WRITELINE(*this, dc_state, aica_irq))
 	MCFG_AICA_MAIN_IRQ_CB(WRITELINE(*this, dc_state, sh4_aica_irq))
-
 	MCFG_SOUND_ROUTE(0, "lspeaker", 2.0)
 	MCFG_SOUND_ROUTE(1, "rspeaker", 2.0)