Peter Diezel question

[jd267]

peter my herbert mk2 spit out a sovtek LPS yesterday (went microphonic) is it ok to use a LPS in the PI in the Herbert ? Thanks

 

[Laura]

Those tubes are prone to micro phonics. The only place I use them is in PI slots.

 

[jd267]

Those tubes are prone to micro phonics. The only place I use them is in PI slots.

I know that about the LPS . This happend with it in the PI also. Thx

 

[Peter Diezel]

[No message]

 

[Bato]

Those tubes are prone to micro phonics. The only place I use them is in PI slots.

I know that about the LPS . This happend with it in the PI also. Thx

I had a lps as pi too because a tube guy told me it would be the best you can use. It get microphonic. Totally shit!

I never ever believe to someone else! Only Peter Diezel! Only his advice is the right one.

 

[Peter Diezel]

Most amps have cathode followers and on the early
ones there are voltages up to 220VDC on the second
cathode. Not all 12AX7 types can stand that voltage.
I know the Chinese ones have no issues with that.

The Chinese ones sounds best too me. It´s only
hard to select a non microphonic one for V1 and V2.
Laura from Valve Queen got some samples from
me and she knows what to send out and sell.

There is no problem if you like other brands of tubes,
the problem is to find good ones. The manufactures
don´t will improve the quality. It depends on the
distributor to take care and do a big effort on selection.

The Chinese 12AX7B has 1% to 2% of useable V1 pieces
in a bulk of 100.

 

[esizer]

I rock the stock tube list (thanks Laura!) and IMO, it is perfect.