Grumpy Old Geeks Products Kurzweil SP3X Product Kurzweil SP3X 2 mentions in 1 episode The Kurzweil SP3X is the stage piano Dave bought broken and repaired. Mentions 759: Seeking Mrs. Claude Aug 20, 2026 1:10:42 This digital piano project, the Kurzweil SP three X. 1:11:14 I’m happy to say that in the end it is now working.