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Modwright Oppo 105 - Upgrade Power Supply Tubes?

Thanks to the forum & a post by Mrtennis I upgraded the 6sn7 tubes to 1950's RCAs and am most pleased with the change in sound. In my 2 systems with my 2 ears the player went from digital sterile to nice and musical. I am not a fan of the supplied electro-harmonix 6SN7 that is supplied. Thanks again Mrtennis. And here is my question, has anyone found it beneficial to upgrade any of the tubes in the power supply?

Many thanks.
bluewolf

Showing 2 responses by mattmiller

mattmiller's avatar
mattmiller
1,527 posts
 
Yes, I use a MODWRIGHT 9.0SE Linestage. The biggest improvement to the Rectifier is a Mullard 5AR4 old stock or NOS.I bought mine from ANDY @vintagetubeservices.com for around $100.00. Awesome tube :-)
mattmiller's avatar
mattmiller
1,527 posts
 
I have used Both the Phillips 5R4GYS and the Sovtech and the Mullard 5AR4..The Mullard is the one to go with.You see in a 5R4GYS vs 5AR4 , the plates are too close together in the phillips and while this tube will work..it is not a good match for the Modwright 5AR4 driven power supply. Find yourself a good REAL Mullard for around $120. You don't need to run a $350 metal base. This tube will tighten the bass and give everything a little more weight.The phillips sounds bloated and blurry in the low regions.
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