UltimateMicro has 26 Mockingboard v1a cards in stock. This is a 100% compatible clone of the Sweet Micro Systems Mockingboard A, (upgradeable to a “B” with the addition of an SSI-263P Speech Synthesizer chip). It’s also features a few modern enhancements. The Mockingboard v1a is only $85 USD plus shipping. At this price, THESE WILL GO FAST!

Short of an actual Mockingboard, this is the best, most compatible product available.