Hydra 8 after Equitech 2q

Or Hydra with something --or Equitech
2Q with something else?

Personally, i WOULDN'T recommend putting a conditioner btwn a balanced power transformer and your system.
I used to run a Burmester 948 conditioner, and scrapped it after I realised dynamics were getting squashed. It had an led readout which showed current voltage which fluctuated all over the place.
On installing a 4kVA balanced transformer I got all the advantages of the Burmester (detail and air), but with none of the downsides.
Placing the Burmester in series with balanced showed the voltage stabilised totally, ie balanced doing it's job, but the Burmester again introduced a softening in sound.
My advice would be scrap the conditioner, go for at least 4, if not 8kVA balanced power, and address grounding issues. I use Entreq Silver Tellus - check my dedicated thread on 'tech talk' forum.

Did you try the Burmester 948 before the balanced transformer?
I understand Differential noise can extend well beyond the limits of the balanced unit.