When were the best tube amps made?


And what were they?

1980's Audio Research need not apply. 

erik_squires

When I had Spendor 2/3 speakers I liked these speakers in combination with McIntosh MC30 monoblocks from 1950x. Than I moved on to high sensitive speakers Altec 604E I recognised that 30 Watt push-pull is too rough for such speakers.

I decided to go to 300B SET DIY amplifier. For high sensitive speakers SET sound much more refined and transparent and not less musical than McIntosh. 

After living 17 years with high sensitivity speakers, I will never go back to low sensitivity. As a result, high power tube amplifiers are no longer interesting to me.
 

Modern tube types, like KT 120, KT 150, and KT 170 deliver more power, but to my taste, they don’t sound that good.  I like much lower power alternatives, but of course that means having speakers suited to lower power.  I will take a modern or vintage 6L6 or KT 66 amp over amps capable of running higher power types.

Over the last few years I have learned to appreciate the work of small, "boutique" builders. These talented artisan/engineer/enthusiasts can produce equipment that performs at an elite level. In my experience they are all working with vintage, very low output tubes. The equipment is produced in tiny quantities for the hardest of the hard-core zealots.

For a long time I listened, with great enjoyment, to amplifiers with prodigious power. I loved it. They sounded great. I’m not saying that high powered amplifiers, SS or tube, can’t sound wonderful.

But I noticed something. Lots of times I’m listening in the near field at 65 - 75 dB. On my 94 dB efficient speakers that means I’m listening to much less than a watt.

I had the chance to try a 300B, point-to-point wiring, zero negative feedback amp. Loved it. Now I'm down the rabbit hole listening to amps employing ancient 45 tubes. Glorious.

Yes, I appreciate that the dynamics of the music can sometimes require huge, instantaneous spikes of current and power. And I also appreciate that these low powered amps can produce a lot of distortion, if driven beyond their limits. But, for my listening, to my mixture of jazz, classical, vocal, dub, hip-hop, ambient, country, soul and R ’n B, I don’t think that’s happening. Again, my music, my preferences, my system. So, might not work for everybody. I get that. And I’m not trying to argue with anybody. Just trying to encourage others to really think about how they are really listening and how much power they need.

I still think my Lamm ML2 (original model) are wonderful but you need very efficient speakers.

@clearthinker - I had an SP-10mkii for many years, what a glorious piece-- it was the last of the old school ARC tube preamps. It definitely had issues with microphony--but that phono stage was glorious for its time. I finally did sell it and went with a separate line and phono stage set up  (which has evolved over time) but that preamp was a classic. That is what you were speaking to, yes?