China built tube amps

I've had lots of experience with Chinese tube gear. In fact, I'm listening to one right now. I will say this. Most, if not all sound muffled and dead. The sound never seems to come out of the speakers. It's as if you placed a large drape over your speakers. Some are better than other but do not compare to US or EU gear. 
They could be a diamond in the rough if you know what to look for and if you know a bit about circuitry. 

Both my pre-amplifier and power amps have been guttered and the circuit redone with better  components and a simpler design.  
In my case, I wanted to build a 845 single ended amplifier and decided to get one from China as a starting point. It was cheaper than getting the parts separately.
There are sites that talks about these modifications such as Tone Lizard and others. But if you're like most, your dealer is right on his recommendations. 

Good luck. 

I own Chinese equipment, and I have no problem with purchasing it. Still, I'd never buy any 845 amp from unknown, dubious Chinese manufacturer, seen these issues for years with 845's. We're running nearly 900 volts here, very demanding of quality parts, design. I'd be wary of some of these push pulls as well.

Less problematic would be lower power tube amps with point to point wiring. I'd always look closely under the hood prior to purchase, get someone with expertise to check for you if not  experienced in these matters.

We see ever improving Chinese equipment over the years, stick to the well known brands, let others  take the risk with the unknown. The good stuff will persist in market, the others will disappear.

If you are just getting into trying tubes look at the Carver Crimson 275. A giant killer at $2750.  KT 120 power tubes (or it 88 or 6550) gets you all kinds of power.  Five year warranty on the entire unit including tubes.  Change the signal tubes to some NOS and being it up another level.  Bob Carvers proprietary transformer design.  And you can try it out from Jim Clark Stereo with no questions asked 30 day return policy, no restocking fee.  

@veerossi

Re: LM805ia

If you go with one, I’d suggest swapping in some NOS Melz 6SN7’s, a National Union 1940’s NOS 6SL7, PSVANCE ACME 805, and PSVANE ACME 300b tubes. I estimate a 20-25% sound improvement over the original tubes.

Your tube rolling experience is very similar to mine on the LM805ia. I’m using the Psvane ACME 805’s, EML 300-XLS’s, a 1960 Mullard ECC35 (6SL7), and a pair of 1944 TungSol 6SN7GT round plates. 25% sound quality improvement is about right. Such a lovely amp that conveys hauntingly evocative music.

I have the Audio GD tube preamp.  And it is nothing short of awesome and is built like a damn tank.  It is a Chinese company.