It's a fantastic SS amp if you want a SS amp to sound like a tube amp. Tyll keeps calling it his reference amp. In my opinion a reference SS amp should have the best SS can offer. The 430HA doesn't do this. It is rather flawed.
At the time I had it, my tube amp had more treble detail. That is unheard of. A tube amp beating a SS amp in detail. What!
We were using a special test track and certain detail was missing from the 430 HA.
Then we did a speed test. Geez the 430HA was slow and sloppy. It fell apart. The 430HA is primarily designed to sound like a tube amp. If you want a tube amp without the hassle of tubes then it's a good option. I would rather have a SS amp that showed the benefits of SS and a tube amp for when you want to mellow things down. That's what I ended up doing.
At the time we had the 430HA, 230HA, Auralic Taurus, Violectric V281 and Oppo HA-1 we ranked the amps like this (best to worse)
Violectric V281*, 230HA (it's design is not flawed and better than the 430HA), Auralic Taurus (a little cold sounding), 430HA and then the Oppo HA-1 (geez that was bad and miles behind). All amps being runned off one DAC the Auralic Vega.
*tested on the XLR output where it uses 4 amps to drive the headphones. Purely brilliant stuff. The single end is not as good.