As rodman99999 replied, the Philips 5R4GYS is a wonderful sounding tube and I do have a pair that I switch out on occasion[in my pre] with the Brimar military CV717/5R4GY. The Brimars sound more open and organic than the Phillips but not as detailed in the highs, with a huge sound-space and crazy good dynamics. They can be hard to find and a bit pricey... but worth the price in my opinion.
How much does tube brand REALLY affect sound in terms of rectifier tubes?
Just wondering if anyone has opinions on how much it really matters as far as sonic signature when it comes to the type of rectifier tubes you are using. There doesn't seem to be a lot of comparison info out there.
I haven't done any tube rolling yet, and was looking for advice before I start.
I have a preamp using one GZ34/5AR4, and a pair of monoblocks using one each of these same tubes.
The preamp came with a NOS Amperex Bugle Boy, and the monblocks came with new production JJ's in them.
I'm really enjoying the sound with the setup I have now, and if rectifier tubes are not going to change the sound much either way, then I will play with some other tubes instead.