I'm a few hours into the running in period for my 'Jensen Cap' upgrade on the Icon Stereo 40. I doubt it requires to many hours if what I'm hearing is anything to go by; open, wide, high and deep, instruments and voice have taken on a new freedom that one has always believed was the rarefied world of very special and expensive amps? Such freedoms are obvious in BBC plays and programs so humble as the archers, it is like they are standing in the room holding a conversation, no boxiness or coloration, they are just there . . . Peggy has lost Jack after 23 years of married bliss, Helen has rocked the Archer family with an affair, all good stuff . . . :O
I have had a fiddle with the 'rectifier and first stage' valve combinations, I had a dozen or so possibilities? Ended up with the same NOS (new, old stock) early 70's rectifier valve from a B29 bomber that I have been using for 6 months, but a new 6SL7GT Tung-Sol valve has ousted the Russian jobbie I favored as the first stage . As valves take a time to burn in, this is probably also where changes are coming from. Tung-Sols are not expensive, staying with my thinking, that with careful selection and patience, the very expensive valves are not worth bothering with?
A few more hours this evening, into Horlicks hour.
CJSF
I have had a fiddle with the 'rectifier and first stage' valve combinations, I had a dozen or so possibilities? Ended up with the same NOS (new, old stock) early 70's rectifier valve from a B29 bomber that I have been using for 6 months, but a new 6SL7GT Tung-Sol valve has ousted the Russian jobbie I favored as the first stage . As valves take a time to burn in, this is probably also where changes are coming from. Tung-Sols are not expensive, staying with my thinking, that with careful selection and patience, the very expensive valves are not worth bothering with?
A few more hours this evening, into Horlicks hour.
CJSF