diff --git a/extern/vgsound_emu-modified/vgsound_emu/src/es550x/es5506.hpp b/extern/vgsound_emu-modified/vgsound_emu/src/es550x/es5506.hpp
index ea8b5a8fb..e2b793cd5 100644
--- a/extern/vgsound_emu-modified/vgsound_emu/src/es550x/es5506.hpp
+++ b/extern/vgsound_emu-modified/vgsound_emu/src/es550x/es5506.hpp
@@ -314,9 +314,9 @@ class es5506_core : public es550x_shared_core
 		inline bool bclk_falling_edge() { return m_bclk.falling_edge(); }
 
 		// 6 stereo output channels
-		inline s32 lout(u8 ch) { return m_output[std::min<u8>(5, ch & 0x7)].left(); }
+		inline s32 lout(u8 ch) { return m_output[ch&7].left(); }
 
-		inline s32 rout(u8 ch) { return m_output[std::min<u8>(5, ch & 0x7)].right(); }
+		inline s32 rout(u8 ch) { return m_output[ch&7].right(); }
 
 		//-----------------------------------------------------------------
 		//
@@ -374,7 +374,7 @@ class es5506_core : public es550x_shared_core
 		bool m_wclk_lr	= false;				 // WCLK, L/R output select
 		s8 m_output_bit = 0;					 // Bit position in output
 		output_t m_ch[6];			 // 6 stereo output channels
-		output_t m_output[6];		 // Serial outputs
+		output_t m_output[8];		 // Serial outputs
 		output_t m_output_temp[6];	 // temporary signal for serial output
 		output_t m_output_latch[6];	 // output latch
 };
diff --git a/extern/vgsound_emu-modified/vgsound_emu/src/es550x/es550x.hpp b/extern/vgsound_emu-modified/vgsound_emu/src/es550x/es550x.hpp
index 9967acf11..02ddcd9a5 100644
--- a/extern/vgsound_emu-modified/vgsound_emu/src/es550x/es550x.hpp
+++ b/extern/vgsound_emu-modified/vgsound_emu/src/es550x/es550x.hpp
@@ -160,6 +160,7 @@ class es550x_shared_core : public vgsound_emu_core
 							: vgsound_emu_core("es550x_voice_alu")
 							, m_integer(integer)
 							, m_fraction(fraction)
+              , m_fraction_m9(std::max<s8>(0, m_fraction - 9))
 							, m_total_bits(integer + fraction)
 							, m_accum_mask(
 								u32(std::min<u64>(~0, u64(u64(1) << u64(integer + fraction)) - 1)))
@@ -175,6 +176,7 @@ class es550x_shared_core : public vgsound_emu_core
 						// configurations
 						const u8 m_integer	   = 21;
 						const u8 m_fraction	   = 11;
+            const u8 m_fraction_m9 = 2;
 						const u8 m_total_bits  = 32;
 						const u32 m_accum_mask = 0xffffffff;
 						const bool m_transwave = true;
diff --git a/extern/vgsound_emu-modified/vgsound_emu/src/es550x/es550x_alu.cpp b/extern/vgsound_emu-modified/vgsound_emu/src/es550x/es550x_alu.cpp
index f058f0546..2118266f3 100644
--- a/extern/vgsound_emu-modified/vgsound_emu/src/es550x/es550x_alu.cpp
+++ b/extern/vgsound_emu-modified/vgsound_emu/src/es550x/es550x_alu.cpp
@@ -101,7 +101,7 @@ void es550x_shared_core::es550x_voice_t::es550x_alu_t::loop_exec()
 s32 es550x_shared_core::es550x_voice_t::es550x_alu_t::interpolation()
 {
 	// SF = S1 + ACCfr * (S2 - S1)
-	return m_sample[0] + ((bitfield<s32>(m_accum, std::max<s8>(0, m_fraction - 9), 9) *
+	return m_sample[0] + ((bitfield<s32>(m_accum, m_fraction_m9, 9) *
 						   (m_sample[1] - m_sample[0])) >>
 						  9);
 }
diff --git a/src/engine/platform/es5506.cpp b/src/engine/platform/es5506.cpp
index 8939c1d85..e532eff27 100644
--- a/src/engine/platform/es5506.cpp
+++ b/src/engine/platform/es5506.cpp
@@ -170,14 +170,6 @@ void DivPlatformES5506::acquire(short** buf, size_t len) {
 }
 
 void DivPlatformES5506::e_pin(bool state) {
-  /*
-  if (es5506.e_falling_edge()) { // get channel outputs
-    if (es5506.voice_update()) {
-      const signed int lOut=es5506.voice_lout(prevChanCycle);
-      const signed int rOut=es5506.voice_rout(prevChanCycle);
-      chan[prevChanCycle].oscOut=CLAMP((lOut+rOut)>>5,-32768,32767);
-    }
-  }*/
   if (state) { // host interface
     if (cycle) { // wait until delay
       cycle--;