Tubes with different gain for Moscode 401HR

What I mean is that you cant use a 6 series with a 12 series in line - so if a 12AU7 is on the (LF) outside, another 12 series tube must be used on the HF (outside), (according to George) defeating the purpose of using the higher gain tube.

I too have an Atma-Sphere MP-1 and MA-2 in my main rig. The kings, undisputed. But in this system with Mark-Daniel speakers, (4 ohm, down to 2.8, 85 db sensitivity) LF must be driven by ss/mosfets, unless I drove them with the big Atma-Spheres, which I'm not about to do.

11-15-07: Springbok10
What I mean is that you cant use a 6 series with a 12 series in line - so if a 12AU7 is on the (LF) outside, another 12 series tube must be used on the HF (outside), (according to George) defeating the purpose of using the higher gain tube.

I see.

If it were me, I'd try it anyway despite what George says.

Otherwise, I'd investigate the Marchand tubed crossover.

I will try horizontally bi-amping with one amp tubed with NOS 6DJ8s (quad) and the other with NOS 12Au7s. Former for LFs, latter for HFs.

Sounds like a good experiment.