Sennheiser HD559: more like 558 or 518?

[Stabby]

I ordered a brand new pair of HD559 for just €65 assuming it sounds the same as the HD558 but I've read that may not be the case. Has anyone been able to compare the 558 and 559?

I bought it mainly to replace my HD555 for use on my digital piano and to have another pair with much wider soundstage than my HD650. Is the HD559's soundstage as good as the 558?

 

[Magicman74]

The 559 is on par with 518, Not quite as open/clear as the 558 IMO, the 579 is more inline with the 558.