By co-incidence I found a local tube amp builder and repair shop. He does repairs from all over North America...
My amp had a tube starting to arc. He checked over the amp and did not redo my soldering, which I thought he might.
He also has a customers Audio Note 300b in for repair and I hope he calls me when he sound tests that amp after repair...
For testing reasons he can make sure any amp I have is up to snuff. Already he found on testing some Raytheon tubes (EL84) that were in one amp I tested (and shelved) that I had a ASC poly cap power supply installed that the tubes were defective. They tested good on the tester but distortion appeared when volume was turned up... (tested good sounded bad)
I will be able to get back to that test ASC power supply. Reason I want to know what power supply cap matters? That test would be ASC vs. vintage which is the best I have had so far...
In his amp builds he uses no electrolytics.
Now I can get push pull or triode options of newer used or custom made with power supply caps of choice... I know it will be Duelund CAST in the coupling but not sure about style of amp or power supply.
On getting back the amp and hours piling on in the phono stage. I am also running a hard drive to the Oppo with 24bit high res music coming in. Early testing but even high res digital is not as good as analog in realism...
The Duelund CAST phono stage caps might have moved the vinyl playback beyond digital in the sense of realism. Before caps were changed in the amp all the way through digital sounded better....
My amp had a tube starting to arc. He checked over the amp and did not redo my soldering, which I thought he might.
He also has a customers Audio Note 300b in for repair and I hope he calls me when he sound tests that amp after repair...
For testing reasons he can make sure any amp I have is up to snuff. Already he found on testing some Raytheon tubes (EL84) that were in one amp I tested (and shelved) that I had a ASC poly cap power supply installed that the tubes were defective. They tested good on the tester but distortion appeared when volume was turned up... (tested good sounded bad)
I will be able to get back to that test ASC power supply. Reason I want to know what power supply cap matters? That test would be ASC vs. vintage which is the best I have had so far...
In his amp builds he uses no electrolytics.
Now I can get push pull or triode options of newer used or custom made with power supply caps of choice... I know it will be Duelund CAST in the coupling but not sure about style of amp or power supply.
On getting back the amp and hours piling on in the phono stage. I am also running a hard drive to the Oppo with 24bit high res music coming in. Early testing but even high res digital is not as good as analog in realism...
The Duelund CAST phono stage caps might have moved the vinyl playback beyond digital in the sense of realism. Before caps were changed in the amp all the way through digital sounded better....