When were the best tube amps made?


And what were they?

1980's Audio Research need not apply. 

erik_squires

I love my VAC Renaissance 70/70 Mk II, it's 20 years old and still works great  However I am taking it back to Florida this January to get the latest MKIIIs updates, then it will out live me! Handmade in the USA!

@fthompson251 I hear that's one of their classic models, definitely a keeper! There are still fans of their 300B sound before they transitioned to beam tetrodes.

@fthompson251 That’s cool! Will you be taking the older amp to the VAC factory in Sarasota FL I think it is?

For me this is notable testament of what some amp makers will do and others won’t when it comes to not only standing behind their product, but also upgrading it later for you too should you desire. I’ve had some older amps I wanted to keep beyond upgraded beyond caps I did myself, and the manufacturers would not do much more. Makes the original investment less worrisome too knowing that factory is there for you later on.  Good for you, Best of Luck on this. Please report back after to let us know how it goes!

@decooney @mulveling  To this day Kevin Hayes will work on any VAC unit. (that I know of) Secondly before it leaves back to it's owner he personally auditions it to assure it is voiced was designed to be. I had them upgrade my CLA1 Pre amp to Mk III this summer and they did a great job on it. The upcoming amp upgrade is rather extensive so I am excited to see the outcome. 

Would be really interested to hear from an engineer and tube amp builder today who has seen and heard many generations of amps. What makes a tube amp good? More dynamics, more bass, balance, all of the above etc….Have parts improved over time? I hope mine is the best!!

I fixed up an ST70 and a PAS 5 many years ago. Just replaced all the resistors and caps. I thought it was bass-heavy in my system, but the midrange and highs were great. For the PAS, I replaced all resistors and caps and bypassed all the tone control stuff. I am a HUGE Decware fan. Had a couple of their small entry level amps, and now have a Torii - 20WPC - EL34 based amp. I love all their stuff. Also have one of their phono preamps for a hi output cartridge, and I built an 8" full range open baffle using their cabinet design. The 'AH HA' moment for me was when I replaced my SS pre-amp with the PAS5? PAS3? I forget - and I could not believe the musicality that came out of my system. That was my conversion to tubes.