Is the Kab Speedstrobe necessary with the VPI SDS?

I agree Shane. Its got me beat why Harry doesn't supply a strobe disc that includes 50Hz markings - at least for export to England/Australia etc. The strobe disc that came with my SDS is the same one supplied 14yrs previously with my TNT - totally useless with 50hz mains.
The KAB strobe is brilliant. Maybe Harry should offer it as an option?

Strobe??...Was there supposed to be one in the SDS box?..Mine just contained the strobe disc and the SDS.Has to buy one later...

Ok, now you guys have me wondering. I just ordered my SDS from my dealer over the holidays and he made no mention of needing a seperate strobe or disc saying "it comes with all you need".

Is one included with the SDS thats "ok" to use? Does the KAB just make things more exact and easier to set up?

Just curious, How much are you off without using SDS?

I use a stopwatch. Probably not as accurate but close enough for me.