Apple II and AY 3 8910 sound cards

Just after the delivery of the AY-3-8910 sound chip, several cards were developed on the Apple II with more or less commercial success. With a Vista Music Machine 9 (nine voices) playing some tunes, discover some of these early cards: Covox, NoiseMaker II, Vista Music Machine (which was the first to have three chips on a single card, similar to three ALF cards), Mockingboard, Mustalgame, Synthet, Phasor. Some of the cards shown here did not include the audio chip but were available very early, like the AL