Hey guys! Good evening to everyone. This is Rodney in Raleigh, N.C. with VTubeAudio. I see a few questions here about the rectifier / tubes of choice for the ModWright Transporter. I have rolled nearly every tube imaginable, and a few not on any list here.
I really believe that the most important thing is to get "very strong" NOS tubes. A tube can look new or old and be the exact opposite. It is the hardest part of the tube business, telling the difference. A tube can test weak or strong on your tube testers but this is still very misleading. The true test is how it sounds. That is why I love this forum.
Rectifiers to try:
The GZ37 did not impress me, not even the Wycombe.
The JAN 5U4's are really good but may over emphasize the bass just a bit. If that is your thing then it is a great rectifier.
The Metal Base GZ34, all years, lends itself to balance and clarity in the sound. In other words it has no faults and doesn’t' do anything wrong. It also doesn't boost or magnify any frequency / tone but delivers a high quality sound, high class sound.
The Philips branded GZ34 / 1965 black base / single halo getter / smooth dual gray plates / chrome top / tubular shape (in my opinion) is the best. I am trying to find a few more to build my stock up a bit before advertising this fact. I think I only have one. LOL!
The best output tubes are the 6H30DR's and this is sad. I am trying to restock and could use some help finding new supplies of them.
I tried quite a few other tubes for the left and right outputs but pledged my loyalty to the 6H30n-dp's and quit rolling tubes on the outputs because I didn't see any use in it.
Please at least visit my EBay auction for the Bugle Boy Metal Base GZ34 1957 rectifier. I slipped / made a mistake when posting it and started the auction at .01 without a reserve. OOOps! I honestly did not do that on purpose. LOL!
So here is the deal. If anyone from Audiocircle wins the Metal Base GZ34 Bugle Boy, emails me that they saw this posting on AudioCircle, I will give them free of charge my Philips GZ34 or a brand new matched pair of 6H30Dr's. Your choice!
Thanks for your help and support. The VTubeaudio Website will be up and running, completely new look, very soon. Please wish me luck on it, the developer is pulling out new technology and promises that it will be very special when completed.
I do hope to find more time to follow this thread. I love it! I will check back to read up on the latest tube rolling news occasionally. What you guys have going on here is fantastic. Keep it up!
Take care guys and have a great day!