This is the second Spring Pan Kit that I started using around 2016. The slanted angle of SD-2 with the smaller size of the SP-2 formed a more compact and ergonomic kit design. It was also a sit down kit. Despite some of the improvements in the design the sound was actually worse than the SPK-1. I discontinued use of it within a year. I am currently working on an SPK-3.

SPK-2 (2016)