Has anyone used Pearl Tube Coolers on their 845's? I am using them to hopefully extend their life and possibly reduce the small amount of microphonics. At first I thought the coolers dampened the HF end a bit but after trying the 845B's with and without several times I am now quite happy to leave them on. I suppose the coolers have been on for about 4 months in total and the amps are two years old so I guess the tubes were doing well anyway. There is no sign of the plate current's dropping off. The amps have plate current meters. The amps are on for 4-6 hours every day.
Best 845 tube out there?
I am running a pair of Cary CAD-211AE monoblocks with the standard no-name Chinese tubes shipped by Cary. Whilst I am happy with the sound, I think I should buy a pair of 845's to keep as backup in case something happens to these tubes.
Because I will need to buy FOUR of them, this rules out any tube that sells for stupid money (e.g. vintage RCA 845 tubes).
The only current production 845's I am aware of are:
- Shuguang 845 "standard"
- Shuguang 845B
- Shuguang 845C
- Shuguang PSVANE 845
- KR Audio 845
I have found reviews of the Shuguang 845B and 845C, but there is virtually no information out there on the new Shuguang "psvane" 845. Has anybody heard this valve, and is it a noticable improvement over the 845B and C? Also, what do people think of the KR?
Because I will need to buy FOUR of them, this rules out any tube that sells for stupid money (e.g. vintage RCA 845 tubes).
The only current production 845's I am aware of are:
- Shuguang 845 "standard"
- Shuguang 845B
- Shuguang 845C
- Shuguang PSVANE 845
- KR Audio 845
I have found reviews of the Shuguang 845B and 845C, but there is virtually no information out there on the new Shuguang "psvane" 845. Has anybody heard this valve, and is it a noticable improvement over the 845B and C? Also, what do people think of the KR?