The Gravis Ultrasound ACE

Back in the early 90’s the Canadian company Gravis came out with a range of sound cards called “Ultrasound”, or GUS for short. They were meant to be Adlib and Sound Blaster compatible, as well as having a versatile Wavetable synth, which could be populated with custom samples. It was similar to what the Amiga did, but with way more concurrent samples or channels.
The Sound Blaster compatibility was lacking at best, or non functional in other games. So at one point Gravis left out all that made the GUS compatible and simply put the Ultrasound part on a card called the Audio Card Enhancer (ACE). This card is very sought after nowadays, as you can simply plug it into a retro machine alongside an existing SoundBlaster card. Let’s have a look at it!

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