Mastersound Compact 845 with Pvsane 845T

Sorry for your troubles Patal. I’m very lucky to have a friend who is a gifted tech (even though you make me wait too long, K). So far, I have never found the tubes provided by any manufacturer to be right for me, so by all means, keep searching for upgrades. Just determine what your amp requires and then make sure the new tubes meet the spec. Tubes make a difference.

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You are lucky ,the amp sounds okay but I dont want to use it incase I damage something inside due to the wrong bias voltage.Probably best to wait till i get back home to Ireland next year ,but even that is a long time to be using it and putting it at risk.It is still under warranty so I believe the best option is to let Dealer/Supplier sort this out.Lets see what happens

Hi, yes I spoke to Mastersound on the phone the other day and he confirmed that if I want to use the Psvane 845-T's a mod would need to be performed on my Compact 845.

Why doesn't someone simply ask Mastersound to provide the Compact 845's operating specs for the 845 tube???? I know of a couple of Mastersound owners who use the Shuguang 845B tube which has the same operating specs as the Psvane 845.

Is the Mastersound Compact 845 shipped with standard Chinese 845 from Shuguang?

HI All,
This gets a bit more complicated,I recieved a e mail from mastersound which advised the only way they could advise on the value of the resistor as a mod for the 845t was if they physically had the valve so a engineer could do the required checks.
I dont see that to be rocket science and would have thought they would or could do this quite easily.Even then they stated that it could not be a definite solution in regard to determining the exact value of the resistor.
One would have thought it would be in their customers interests to go down this path and advise customers bearing in mind the PVsane 845T is a god valve and likely wanted to be used by mastersound 845 Amp owners .
If that was not enough I got home last night and was watching TV when the PH5 Pre Amplifier switched on by itself.I thought I had ghosts.checked the on off switch this was okay reconnected the power with the switch removed it still came on.There was a small LED flashing on a circuit board on the same side of the switch.
Both amps are going back to mastersound for repair.It never rains but it pours.Anybody know of a Valve P0wer Amp which would be as good as the Compact 845 which is integrated.going to keep the PH5 when fixed