There is some brilliant stuff made in China, Prima Luna, Quad etc, all much better build
than if they were made in the UK!,
But as a 20 year+ valve amp user I have heard so many terrible stories about cheap valve amps, they are cheap for a reason.
If you want to take a chance then do it via a local dealer with back up, or get a used Musical Fidelity X-Can
that is a great intro into valves.
And as someone who worked in the industry I'd never ever buy on reviews.
Reading the reviews it looks like Audio Advisor sell it, so maybe get it from there.
where in the world are you?
as for the DAC, Audioengine D1 or if too much, the new Fiio E07k looks incredible for the money.