Cayin product line question

I currently own the Cayin A-88T/6550 and owned the ASL AQ1001DT in the past. I enjoyed the sound quality of the ASL, but the build quality is a definite step back from the Cayin. In a side-by side comparison, I don't think anyone would dispute this. Everything from the remote to the the output transformers to the chassis itself is more substantial on the Cayin.

In addition, I agree with the owner of VPI that the Cayin A-88T sounds better than many more expensive separates. I am reluctant to compare the 2 amps sonically because I've used different components with each, but I will state that the Cayin sounds really, really good.

I was told by Acoustic Sounds that the 6550 output tubes add a little more resolution and frequency extension compared to the KT88 tubes -perhaps this is because the 6550 tubes in the Cayin are the more premium ElectroHarmonix tubes and not generic output tubes as used in the KT88 version.

The 50 replaces the 30 in the Cayin line. I think that $ for $ , ASL has a product to match every Cayin model with better quality and higher resale value. I owned a 88/6550 and was happy to sell it. Good but not a match to the ASL AQ1001 DT, cheaper and more powerful.