Question is : has someone tested the DAVE with the BHSE/Sr009 or at least with a TOL STAX set-up ?
Yes, I have, and I posted my impressions only a couple of weeks ago on this thread. On that particular occasion, I was underwhelmed by the improvement DAVE gave above my Yggy.
But it wasn't an entirely fair comparison, so I'm still aiming to give the DAVE another go when it next becomes available for loan and has had a few weeks of burn in under its belt. Hoping within a couple of weeks.
For cable enthusiasts, you may be interested to know that I subsequently tried the AQ Diamond toslnk cable to Yggy and it's a keeper! In fact I'd say that Diamond Yggy made me want to rediscover my album collection more than either DAVE or Vodka Yggy a couple of weeks before. Of course exact details can't be compared over time like that, but I think the desire to rediscover my album collection can be reasonably compared.
Yet to determine if such cable difference affect DAVE as much as they do Yggy.
All this I think is more to do with my source to DAC synergy than it is to do with the DAC to BHSE/009 synergy. The latter just shows up differences in a largely transparent manner.