Here comes the 8-channel stepped attuneator, under construction.
Main features:
 - 64 steps 1db each,
 - 6 relays for pair of channels,
 - 8 (!!!) channels on board.
 - Arduino controlled.

Totals:
 - 104x resistors, in 1206/0804 casing.
 - 24x NAiS relays on board (accepts some footprint variance - SMT/thru-holes, 2.54 pin step)
 - 4x ULN20034x shift registers
 - Maybe some 7805 for PS convenience. 

And the perfect match.... Nixie volume display!