SET UP For drum recording:
diggi 002 rack
api 3124 (4 preamps)
Shure 52
Shure 57
Shure 98(toms)
RODE nt 5
Shure 81.

OK I want to invest around 3k on another preamp unite( I want to have at least 12 preamps)
My question is
is that posiblle with the diggi 002 rack? I know thw converters of the diggi are not that good.
Whichis a good 8 channel preamp?
I like the isa 828 for what I understand the diggi rack only give 8 channels.

What should I do? can I replace the diggi?
Do I have to buy a converter us well?
please HELP!