On manufacturer site there is:
kr808....3 piece
kr808d... 2piece
kr808d-1
kr808d-2
kr808d-1p
kr7 something that is slimmer
And so on and so forth... So annoing.... Doesn't say wich is compatible with what... I'm not gonna blow the bank trying the lot.. like my d-1(exept yes the autos are a bit annoing....)
I was confused by this too when I was starting out (as you can see earlier in this thread), but what I eventually figured out is that in reality, whenever anyone says "kr808", "kr8", "808" etc etc, they're referring to kr808d-1. The E9 may technically be referred to as kr808d-2, on some manufacturers spec sheet somewhere, but nobody actually calls it that in the real world, they just call it E9 (or the various brand names its retailed under). So you don't really need to worry about compatibility - in practice, anything that's advertised with any variant of 808 in its name is gonna be compatible with your kr808d-1