Output tubes burn-in


I just replaced the 6550 output tubes in my Audio Research Dual 75 power amplifier. The new matched pairs (and regulator tube) came from Audio Research.
The last time I did this, I burned the tubes for 20 hours before listening since I've read that it takes that long for the music to sound good. This time, I'd rather listen right away rather than waste 20 hours wating for the "magic" to happen (it really does), but I wondered if a straight 20 hour burn-in is the way to go. Or, if you kept listening until you hit 20 hours, would the result would be the same (music sounding better)? In other words, is there any advantage in strictly waiting for a continous 20 hour burn-in period? Any comments based on experience?
kisawyer
Love it. I think i remember that chair. Issac Hayes was the man. Great story, you could do a blog of audio days gone-by. It would be fun to read.
Keep 'em coming.
We visited Memphis recently- the bbq was phenomenal, we went out to the 4Way for some soul food, and of course, we did Graceland and the Sun Studios tour. I thought Beale St. was disappointing- at best hard rock blues, no country or delta blues or any other kind of blues that we could find. Some of the storefronts were great, but the city had a very dangerous vibe (I lived in NYC during the crack-crazed 80's, and know what 'edgy' is about). Too bad, cause it has the potential to be a little jewel of a city- nice architecture, the locals were cool, and man, that bbq! You could smell it when you woke up in the morning in town.
Whart, Memphis. My old audio buddy from Milwaukee lives outside of Memphis. When I visited him and his wife about five years ago, we went to Memphis. You are right about your impression of the place. I didn’t care for the city.

I was floored, however, by the beautiful architecture of the homes there (especially East Memphis), and could not believe how much one got for the money in a house...at that time. The homes were beautiful.

My friend was a MacIntosh guy. He had a Mac C-22 preamplifier and 2105 power amplifier. I use to get jealous that his Mac would drive his KLH Nines while my Marantz 15 would clip and cause fuses to blow in my Nines. He also had a Marantz 10B.

There was a rivalry between MacIntosh and Marantz fans during those heyday years at the beginning of high-end audio. You could see it in the advertising literature of the day. Ads in Audio, Hi Fidelity and Stereo Review magazines showed Mac equipment in the home of some rich guy with a black Herman Miller lounge chair and ottoman. One got the sense of “being rich and owning MacIntosh.” Even the gothic font in their name denoted class!

The Marantz crowd beamed with pride at the beautiful brushed gold look of the equipment, and the quality finish. The 10B was simply “Da bomb” as the kids say now-a-days. And, the Marantz crowd believed that their gear sounded better than MacIntosh. I still have some of those old magazine ads in a scrap book somewhere.

Besides WZJ (who I consider the Steve Jobs of audio), the other guy I’ve been impressed with is Dr. Roger West of Soundlabs. I met him at a CES show in Chicago sometime in the 90s. Listened to his speaker and was quite impressed. He is a very nice person, having taken the time to talk. He apparently worked at Electronics Industries and knew WZJ.
Didn't know about the West-Johnson connection. Remember Dayton-Wright?
Of course i remember the old McIntosh stuff- even owned a few pieces along the way.
why don't you email me at bill@flyingreptilemediagroup.com
We can connect offline.
Best,