Two weeks ago i auditioned the 800D3 and 802D3 with an expensive McIntosh first.
It was nice and... Had some... Hmmm. Authority. Know what i mean? But it was WAY to warm for my old ears. And not really impressive at all (Wadia-CD-Player directly via XLR).
Then we switched to a newer Pass-Amp. Wow! Way better. Way more open. Tighter bass than Mc, but always right and deep enough. You can hear more details. It's just that: Clean.
At home it's paired with a german Nubert NuPower A. OK, the page is in german, but the technical data can be read:
https://www.nubert.de/nupower-a/p2635/?category=225
Can be compared with PowerAmps costing three times the money. Big recommendation for the budget.