We are slowly moving Emia
into the 20th century and just added a new Manual Autoformer as an entry level product. It is dual mono and does 0 to -52.5dB in 2.5dB steps. Two inputs and parallel outputs adorn the back and that funny knob in the center does a penalty free balance of 1.25dB and 2.5dB left or right. Moving beyond the need for a 2.5dB shift the mono aspect will allow for any offset desired in 1.25dB steps.
It is essentially a 5-1/2" cube with enough mass to be stable and to really put things over the top it ships in a hard case.