I have been an audio enthusiast since the early 1950s as soon as my parents would let me touch their Magnavox "hi-fi" (mono) record player. In the early 1960s I was assembling amps & tuners from kits. I "discovered" McIntosh about 1964. But making about $1.50 an hour I could not afford any.
I would go to the local electronics store and "drool on the carpet" standing in front of their McIntosh gear.
I wanted to be a jazz musician (a'la Art Van Damme) but found out I did not need to give up my day job.
For a while I worked as a music teacher giving private lessons, starting with Ludwig Music House in St. Louis, and then on my own in Pensacola, Fla.
During the late 1960s and early 1970s I worked with a volunteer orchestra (about 50 pieces) as director and ersatz recording engineer.
These early experiences taught me how to recognize instruments in their native acoustic range.
I much prefer pure acoustic music.
It wasn't until the late 1990s that I could afford even used McIntosh gear.
My first Mac gear was a power amp (MC7270). At first I thought it was weak in the treble. Then I tried some source material with plenty of treble. It came through the 7270 VERY clear. Then I realized the Luxman and Carver gear I was accustomed to was weak in the middle and lower ranges.
Since then I have been a little "carried away" with acquiring Mac gear. I have eleven Mac power amps, and several other pieces. If I count correctly I currently have 21 Mac pieces (obviously many in the closet).
I have always purchased Mac gear used. Even after over 50 years in the CPA business, I still cannot afford new Mac gear.
Yes, I have been forced to find a local technician that used to work in the repair shop for the same McIntosh dealer where I would drool on the carpet. He has been able to affordably work on and fix every piece of my Mac gear. He knows all McIntosh gear so well that he does not need to look at a schematic or service manual. My only "complaint" is that he has such a backlog of work, it sometimes takes a long time for him to get to a piece of gear.
As a quicker alternative I have found Audio Classics to be just as good as my local guy - but obviously more expensive.
My most recent addition to my system has been a pair of 50 year old KLH Model Nine full range electrostatics. I sent them to David Janszen for the top-of-the- line rebuild & refurbishment.
The KLH Model Nines have been just as much as an improvement in my system as the Mac gear was.
With my musical background mentioned before, I know how instruments are supposed to sound in their native acoustic environment. My vintage (30 to 40 year old) Mac gear generates a clean enough signal to the Model Nines that I can tell the difference between (1) a violin and a viola, (2) an alto sax from a tenor sax, (3) a "stand-up" bass and a electric bass, (4) a trumpet and a coronet, (5) a flute and a piccolo, (6) a grand piano and an upright piano, etc.
Stereophile, in their reviews of the Model Nines, said that they had enough resolution and detail that the Model Nines would reveal any differences in the recording and mastering process. They were certainly correct!
The Model Nines even tell you how different TV programs have processed their audio.
The detail and resolution coming the Mac electronics is good enough to still hear the differences mentioned earlier. Although I am 78, and my hearing is not as good as it was 60 years, my old Mac electronics are good enough to pass a clean enough signal the the Model Nines to give the resolution and detail they give, It is hard to believe it could be much better.
I know the newer gear specs out better on the test bench, but with proper source equipment and proper speakers, the vintage gear passes out just as good a signal as newer gear.
I have no hesitation in recommending vintage Mac gear.
To me it is significant that "hard core" audiophiles like old tube Mac gear.
Of course, if one is in to 105 db sound, especially in the low bass so one can feel the pressure wave in the chest, then some of the newer gear may suit their needs.
And do not use electrostatics. They have a hard time giving 105 db sound levels.
You need large cone speakers to generate 105 db in low bass (at least the the point electrostatics have matured by now).
Since my taste is mostly Classical and Jazz, I do not listen at 105 db. In my small 1200 sq ft retirement center apartment the vintage Mac gear and Model Nines give me all of the db I need.
Even if 105 db music is your choice, remember that Woodstock and The Grateful Dead were powered by early McIntosh tube gear.
Also, earlier gear did not force you to go through confusing and illogical menus to get the sound you want. Everything is controlled by a dedicated switch or knob!
Thanks,
Jim