What was the most impactful addition to your system?

When I plugged it in, last night. I swapped and went to a pair of PSVANE ART series12AX7 in a just repaired C2500. 2 hours later I was impressed. They sounded better than my humpty dumpty pair of Blackburns. I didn’t try them in my C20 but WOW. I’m a Telefunken, Mullard Blackburn or certed BP RCAs guy.

These are a dynamic valve and very closely matched. That could be my supplier. Excellent matching on his part. He actually checks ALL his valves..

PSVANE ART series ++++ I’d like to try them in a power amp pre section.. I got a good feeling here.

Honestly, I am an old fart as well. The last fifty years I have had quite a few jaw drop moments.

My first piece of audiophile gear: a 7 year old Nakamichi tapedeck that absolutely blew away the sound of my highly reviewed Onkyo (now I realized mid-hi, but that was not how advertised).

First audiophile amp… Threshold s500… 1979 (in todays dollars $18,800) there was nothing else on the market like it.

‘’First digital cable swap… “this cannot make a difference”… but like someone upgraded the components… ~1987

My first high end turntable (VPI Aries / Van den Hull Frog) 1989

My first high power tube amp ARC Reference 160s (2020)

My first really good speakers Sonus Fabre Amati Traditional. (2020)