I have loved the "Golden Age" recordings of the Czech Philharmonic conducted by Karel Ancerl, since I was 12 and listened to their 1960 recording of Rite of Spring at the Toronto Reference Library (I recall they had about 20 Thorens or Philips turntables and decent headphones).
It is a recording like no other. A nice wet acoustic in their Prague hall (Rudolfium or Dvorak Hall?), but mic'ed on the close side so detail and articulation is not lost. The remarkable thing about that orchestra, then, was THE ENTIRE ORCHESTRA - FROM PICCOLO DOWN TO DOUBLE BASS - VIBRATE AT THE SAME PITCH WIDTH AND SPEED. It is an eerie thing, hearing an orchestra play as one giant instrument. At times it almost gives the effect of midi music.
And the timpani is recorded so well!
The negative side, is these recordings are excessively "trebly" (not really "bright", but there is a definite treble boost) and bass shy. Tone controls or EQ are a plus with these.
Pretty much anything from 1958-1965 is highly recommended. Ancerl's legacy of recordings of 20th century composers stands head-to-head with Bernstein, Reiner, and Karajan, in my books.
A personal story: When I first got the job as principal violist of the Victoria Symphony, back in the mid-90s, as a young 20-something, there was a semi-retired old Czech violist, Jaroslav Karlovsjky, who had been the viola professor at the University of Victoria, and who played in my section every once in a while. When I found out this was the principal violist of the Czech Phil back in the Ancerl days, it felt like I had met a rock star! (when I played my viola concerto for him - later conducted by Yannick Nezet-Seguin in performance - he said to me :"You are ARTIST", in his thick Slavic Accent. A milestone in my career).
When I visited NYC in the mid-90s, I found his 1960 recording on CD, of the Bartok Viola Concerto. I excitedly told him how much I admired his recording. "Ach, is terrible", he replied modestly. "Back zhen, izz NEW MUSICK. No one know how it goez".
It was true. William Primrose, the Scottish viola virtuoso, commissioned the work from Bartok, as he lay dying of leukemia in NYC, in 1945. Miraculously, he almost finished the score (it was translated for orchestra from his short-hand manuscript, by his friend Tibor Serly, who also wrote about 24 bars to finish the piece. One of the less spectacular endings in late-Bartok works. One can only imagine if Bela had the time and energy to properly finish the piece.
Primrose, being the commissioner, had a 15 year exclusivity contract for the concerto. This expired in 1960, and Jaro and the Czech Phil were the first to record it then. A friend recently gave me a vinyl copy.
RIP, Jaroslav Karlovsky