Greetings, Friends. I've seen several older threads on this amplifier, but none seemed to touch on this mod, so Here Tis: I've reworked the 6p3p DIY amplifier kit available from a variety of online resellers to use Western tubes.
The original kit came with a pair of 6p3p power tubes, a 6n1 driver, and a 5z4p rectifier, or in my case the Soviet 5Ц4C. Here's the schematic that comes with the kit
I found an older thread on this site dealing with this kit, and an improved design was produced by user Raindance. I've taken his pretty drawing and made 2 changes: by swapping the cathode resistors on the driver tube to 470R, we can use a 12AT7 as the driver tube. And the power supply section as designed is a tad hungry, so I've replaced the 47u with a 18u and the 330u is then replaced with the 47u to keep the rectifier from working so hard. I also have a 5uF mylar cap as bypass on the 47uF, but that's not mandatory.
I currently have it set up with an old GE 5R4GB rectifier and new Ruby 6L6GC power tubes, with a Ruby HG 12AT7 Driver. Sounds Great.
The original kit came with a pair of 6p3p power tubes, a 6n1 driver, and a 5z4p rectifier, or in my case the Soviet 5Ц4C. Here's the schematic that comes with the kit
I found an older thread on this site dealing with this kit, and an improved design was produced by user Raindance. I've taken his pretty drawing and made 2 changes: by swapping the cathode resistors on the driver tube to 470R, we can use a 12AT7 as the driver tube. And the power supply section as designed is a tad hungry, so I've replaced the 47u with a 18u and the 330u is then replaced with the 47u to keep the rectifier from working so hard. I also have a 5uF mylar cap as bypass on the 47uF, but that's not mandatory.
I currently have it set up with an old GE 5R4GB rectifier and new Ruby 6L6GC power tubes, with a Ruby HG 12AT7 Driver. Sounds Great.