I had both the SD-4 and the Sonic Cell for side-by-side testing. While the Sonic Cell was very versatile (especially with the Patchman enhancements)it sounded nowhere near as real as the Ketron. The acoustic instruments sampled by Ketron are the best (especially the saxes.) I sold the Sonic Cell on eBay after about two weeks of comparison. But again, I mostly play bebop, ballads and bossas so those are the sounds that appeal to me. If you are a rock / funk player, the Sonic Cell may be a better fit.


Jan - 12 Core AMD Ryzen 9 3900X
32GB DDR4
Win 10 64-bit
Samsung m.2 SSD Boot drive,other SSD internal and USB drives.
MOTO 2
Ketron SD4,SD1000
Yamaha RX-v381amp
VB-Audio virtual cables