How good is Benchmark DAC1 comparing to......

I will leave your post to speak for itself Uva.

That is very interesting Dne. I look forward to trying the adjustment with my DAC1. Rest assured that if it does what you say it will oust my Lavry, and I will be happy to report on that.

I tried a lot of permutations with the DAC1, including various combinations of internal and calibrated gain, and removing both switching and the volume control from the equation, and some certainly sounded better than others. So I am intrigued to hear about the one you are advocating.

What is the adjustment?

I have been considering buying a DAC1 - is the adjustment an aftermarked modification, or should I wait to buy until the 'adjustment' has been implemented?

The "adjustment" is aftermarket and even then its not much.

I'm with Zenguy. Should we wait?

No, don't wait to purchase a DAC1 because of the forthcoming "adjustment". The "adjustment" does not in any way change the DAC1 itself.