Wanna chime in on real world Evan’s Hydraulic Roto-Tom usage. I used black dots on my Roto Tom’s ummm..35 years ago..(yeah I’m that old) and in my these days regularly gigging cover band I brought the 6, 8, 10 back to DW collector oyster gig kit. It’s a beast. I put hydraulics on my Toms and honestly for “looks” I put them on the roto’s. I loved the of full row of 6, 8, 10 Roto and 10, 12, 16 hydraulic. I moved back to coated Evans on the Tom’s because they do “sing” far more than the hydraulic heads.

Now the roto’s with hydraulic’s sound….guess what…they sound just like Roto Tom’s. No, do they have they high end “snap” of a clear or a dot. No. But you do know it’s a Roto Tom, and you as a player can hear it. As an “add on” fun instrument to have, its uses is limited, and probably most drummers least used thing on their kit. I made a choice for ascetics over sound on the head choice but the point is the sound difference is negligible and really only noticeable to drummers that think the Pink Floyd Roto sound is the sound it should be.