DSP Emulator v0.18 (2017/07/13) is released. DSP Emulator is a new version of the ZX SPECTRUM +3, ZX Spectrum 128, ZX Spectrum 48, Arcade, Amstrad CPC 464, NES and Game Boy emulator.

DSP Emulator Changelog:
-Game and Watch
+Added 'Mario Bros.', missing graphics
+Better sound emulation
-Amstrad CPC
+Better CPC Z80 timings
+Added configuration for tape motor, you can select if it is used in the emulation of the virtual tape or not
+Improved video (registers, vsync, hsync, etc.)
+Improved memory management, 512Kb expansion it's working properly
+Improved interruptions
-Super Darwin
+Added MCU, simulated protection removed
+Corrected palette and VBLANK
+Added 2nd player controls, dip switches and screen flip

Download: DSP Emulator v0.18 (2017/07/13)
Source: Here