I never even bothered trying the stock headshell with the Denon. Even though my Technics headshell has a screw-in 4g weight to make it heavier, I took the advice of the sales rep at Acoustic Sounds and got the Sumiko. It's just a better headshell in every way--less resonant, more structurally rigid, much better lead wires and clips, and that totally cool azimuth adjustment. I figured the extra weight would also come in handy with the lower compliance rating of the Denon compared to the Ortofon and Shure carts I'd been using.
I consider the Sumiko the first step required in elevating the SL12x0's performance to reach its potential.
I consider the Sumiko the first step required in elevating the SL12x0's performance to reach its potential.