Decware gear is well constructed, nice looking and reasonably priced. Whether it is nice sounding would be a matter of personal taste and system matching.
In the systems I've heard two of their amps, it was not for me--a bit too anemic and lifeless sounding for my taste. But, I am more accustomed to more expensive tube gear so my points of reference to similarly priced gear is limited. For reasonably priced tube gear, I prefer the Italian Synthesis brand. I would also look for properly reconditioned vintage tube gear.
In the systems I've heard two of their amps, it was not for me--a bit too anemic and lifeless sounding for my taste. But, I am more accustomed to more expensive tube gear so my points of reference to similarly priced gear is limited. For reasonably priced tube gear, I prefer the Italian Synthesis brand. I would also look for properly reconditioned vintage tube gear.