David Larsson makes a bunch of clone ISA audio boards such as the Gravis Ultrasound, 8-bit ISA Soundblaster, MCA Sound Blaster, Disney Sound Source. He sells them on Tindie for pretty reasonable prices considering the ebay prices for the original boards.

Here’s a good review of his 8-bit Soundblaster card:

These aren’t the only sound card clones. Turns out there are lots of others too:

• Covox Speech thing and Disney Sound source clones
• Orpheus ISA sound card clone
• DreamBlaster
• Snark Barker – make your own Soundblaster 1.0
• Keropi & Marmes Retro Computing – Makes recreation Midi, Adlib, and MegaCard multi emulator

Links:

• https://electronics.dose.se/
• https://www.tindie.com/products/kdehl/8-bit-isa-sound-blaster-15-clone-with-cms/
• https://texelec.com/