Another new DAC: Audio Mirror

95 dB.
But my point was that a DAC or a preamp does not drive speakers, and I don't think you should have concerns about the low frequency performance just because the DAC has a tube inside... especially with this DAC. 

@vassils Can you say what you’re using to run your woofers? I have Coincident PRE’s (94db) and just finally got dedicated subwoofer amplifiers to run their lower ends (2 x 12"). They’re the solid state Class AB Dayton Audio SA1000s that Audio Kinesis uses for their Swarm, supposedly based of a Bob Carver design. So much cheaper than everything else in my system, but made an amazing difference.

And thanks for the comparison to the Terminator, that’s good to hear, as it was another I had considered before buying the AMT3se.

@cal3713 - I am sending you a PM, so we can keep this thread on topic. 

@vassils.  Thanks for the information!

I can safely after a month the maxed out / SE version of the Tubadour iii is just wonderful. For a while I kinda wanted my old dac back. Break-in was tough! The mods offer a more layered and beautiful resolution, greater impact, smoother, and lower noise floor. If you are looking for a DAC in the $1500 price point it is certainly worth putting high on the consideration set. If you can up the budget for the SE, you are rewarded with a better sounding version of the same DAC. As I type I am listening to thom yorke the eraser and I’ve never heard it sound so fresh....