Advice or Experience with Tube Amps: 485's or KT170's?

I am looking at purchasing a new tube amp to match a set of speakers with 95db efficiency. In this particular setup, I don't think 300b's will give the needed power across the spectrum. This has led to looking at 845 and KT170 tube amps. Both seem to be answers to retaining some of the positive sonic characteristics of the 300b but with the advantage of gaining higher wattage power.  I don't know the strengths or weaknesses of each of these, when comparing sonic attributes.  Can anyone offer advice on this?  Here are some models I have found in searching online:

Mastersound Compact 845 Integrated

Audion Black Shadow 2 Mono Blocks 845

Viva Solistino 845 Integrated

Allnic T-2000 KT170 Integrated

Ayon Triton EVO KT170 Integrated

Thanks in advance for any advice or experience with any of these or with the two tubes in question.



What are your speakers and what is your room size? 95db is very sensitive but hard to know the whole story without knowing the speakers. Also KT170s sound nothing like the 300B tube.

Currently have Daedalus Muse but also buying Wolf Von Longa Son Speakers that are 95db.  I am set on not buying 330b's at this point, so I am looking for class A tubes that have more wattage than 8-10 w.  I do not think most 300b's would be adequate, thus the search for something close to the same end results with broader high and low strengths, i.e. more wattage /power.

I agree with @gregjacob that KT170 sounds rather different from 300B. I've heard a couple 300B amplifier (Takatsuki and AirTight). KT170s have more excitement and 'meat' in their sound. 

There are a couple more highly regarded KT170 options. Jadis I70 and Lab12 Integre4 MKII. I'm using the Lab12. IMO, it is identical in performance to the more expensive Jadis and far easier to live with. I've not heard the Allnic though it seems to be highly regarded.




Thanks for the recommendation.  The LAB12 Integre4 Mk2 Integrated Amplifier now comes outfitted with KT-170 valves and garners some great reviews.  And the price is right.  I have put it on my short list.  I would still like to listen to it side-by-side with an 845 setup like the Viva or Mastersound. But from what I've read, a lot of people on a similar search would apparently be at home and finalized with this Greek amp! Cheers.