BTW my main problem is that my heart swings between solid state and tubes and I would like to have something that keep the best of the two. 

That sounds very much like the EC house sound. Not many can pull it off, but from what I heard and own, EC amps walk that tightrope between tube and SS beautifully.

That sounds very much like the EC house sound. Not many can pull it off, but from what I heard and own, EC amps walk that tightrope between tube and SS beautifully.

Crimson is probably as much tube hassle i can take.

You should get an Yggy first.

who ?

You. If you are using a TotalDAC. I think ZD commented he thought the GO v.2 was even better than the unmodded TransDAC.

Dunno if the transdac is better ot not than the TotalDAC.  Unlike 6moons said, the totaldac blows IMHO the metrum octave though. Fortunately, I grabbed the A1 for a much lower price than what was asked a few years ago so I'm not disappointed at all. in my current System (Totaldac/Sonett/HD800) ,the DAC push, the amp brakes.. that's my feeling. So, my plan is to upgrade the amp first. With a Stax SR404/SRM1-mKII , I could hear much more the benefits of the totaldac than with the Sonett. With the HE-9 , my DAC breathes much more too.

So, amp upgrade first then I'll save the money and i'll compare the Yggy and my Totaldac. If I can hear even the smallest step-up, the totaldac will go. Yggy offers so much more features. Once I'll choose the dac, then I'll consider the end game amp... in many years though ! .. i enjoy slow journeys.

@Priidik : totaldac is a Pure R2R ladder dac made of discrete parts. Vishay foil resistors. Marv's seems highly doubtful about the real ability of this tech to reach anything close to what of the Yggy is capable of.  Dunno myself but I'll surely have opportunities to make my own opinion . We have a good relationship with the Schitt french dealer. So maybe , I'll can grab a loaner before the end of the year and have de discount if I want to keep it