I guess I missed something here.
Am I supposed to be impressed? I’m not. I wasn’t.
I had a pair of 901 Series IV back in 1983-1986. Just ok speakers. I powered them to ear-blistering levels with my Sherwood S9600-CP receiver. Then my SAE Two A14 integrated. (I still both of those, but not the 901s. I sold those in 1986. Actually, traded for a pair of KEF 105.2s. Guy wanted them back after 2 months. Nope!!)
I find this more impressive, 1956 recording played back using a 1958 GE VRII mono cart. Recorded using my phone above and behind my speakers, so not ideal. But better than those 901s!