Modwright PH 9.0X Tube Rolling Question


I recently acquired a used PH 9.0X phono preamp and
I want to upgrade the Russian 6922 tubes. Anyone have
any experience with this particular preamp? I'll be looking
for NOS tubes.  

ericsch

I owned a 9.0 for a number of years and tried many tubes.  If you have a tube rectified power supply I would upgrade with a gz34 metal base.  It made the biggest improvement to any component I've ever owned. 

@testrun This thread is about the PH9.0, which typically doesn't have a tube rectified power supply. That said, the older SWP 9.0 did and rolling that tube led to substantial upgrades! Did you have a PH9.0 with a tube rectified power supply? I asked Dan about that years ago and he mentioned the SS and tube versions were not interchangable.

I just ordered a set of Reflektor 6C45. off of epay with a 30 return policy. They should be here by the 11 of Aug.. Now I'm interested in the WE 417A to roll instead of the Siemens E88, which is in the pre now. Has anyone tried the We-417A in their unit?

I have been fortunate to have been demonstrated in the UK a

Modwright PH 9.0 'SE' and not the 'X' Model.

This attached is the sale add for the Phonostage I was demonstrated.

_____________________________________________________________

Modwright Instruments SWP 9.0se Phono stage for Sale
You don't find these coming up for sale very often.
I am the original owner of the phono stage and bought new from Angelsound Audio about 7 years ago.
It is excellent condition and has performed faultlessly over it's entire life with me.
The phono stage is a 230V model and comes with original box and manual.
It is a MM and MC phono stage,
Front panel has ON/OFF, MUTE, Mono, MM/MC switches
There are 2 sets of DIP switches on the rear panel that adjust for the cartridge loading 50 Ohms to 47k Ohms
Tube Complement: (2)6C45's, (2)6N1P's, (2)5687 tubes
Output Impedance: ~600ohm
Frequency Response: 20Hz –– 50Khz +/-1dB
Weight: 27 lbs. (32 lbs. shipped) - approx 15kg shipped
Dimensions: 17"W x 12"D x 4"H

_____________________________________________________________

There has been a few years past now, but do recall it had a very warm sonic, that was very relaxing and I felt perfect for adding a colour to Chicago Blues Recordings.

I am not aware if the 'X' Model is with the same sonic traits.

If there is a Bloom with the 'X' model, and a it is wanted to be heard with a leaner sonic trait. My experience of the Amperex Bugle Boy's - 'Orange Text' has shown these are quite un-valve like when compared alongside a range of valves.

What is good to know is that there are tube options to produce a Warm Bloated Sound, and the Antithesis of this being quite lean.

I use Early 60's E88CC's in two devices. The choices made following quite a few periods of Tube Rolling, are Siemens and Halske in a Phonostage and Mullards in a DAC. 

Is it not strange that different Valves are selected from each other for different circuits? Tube Rolling does deliver a few curve balls.