SoundginZ (Quad) - Sound & Speech synthesizer IC for Arduino / Raspberry PI

SoundginZ (Stereo) - Sound & Speech synthesizer IC for Arduino / Raspberry PI

Speakjet Speech Synthesizer 18-pin IC for Arduino / Raspberry PI

SoundginZ (Mono) - Sound synthesizer IC for Arduino / Raspberry PI

Vintage USSR ferrite core memory module 15 x 32 mm Soviet technology

Incredible Musical Keyboard / Kawasaki Synthesizer for Commodore 64, Works

Vintage TI-99/4A Speech Synthesizer PHP1500 Texas Instruments 1979 Untested

MOS 6581 SID Commodore 64 synthesizer music sound chip IC CSG C64 64C not 8580