Hi Scm, I've lost the countless times I have been asked this question. The Lightspeed Attenuator is all about no contacts in the signal path. And input switching goes against this in a big way.
I did once make one that I believe is the closest to no contacts in the siganl path using Mercury Wetted relays for the input switching, but as you can imagine these are not good for the environment or ROHS certified and will soon be outlawed.
As for new versions none as yet but I'm working on it, but a Mk III Lightspeed Attenuator when/if it comes out will be retro fitable to all MkII, there are no MkI left (except for clones) these were all converted to MkII years ago.
Cheers George
I did once make one that I believe is the closest to no contacts in the siganl path using Mercury Wetted relays for the input switching, but as you can imagine these are not good for the environment or ROHS certified and will soon be outlawed.
As for new versions none as yet but I'm working on it, but a Mk III Lightspeed Attenuator when/if it comes out will be retro fitable to all MkII, there are no MkI left (except for clones) these were all converted to MkII years ago.
Cheers George