Old thread, I know, but I don't see many JE-Labs EL34 threads and there's no need to start a new build thread.
The Kegger/Gendrano/BG KT88SEUL amp was my first tube power amp build. Since then, I've refurbished Magnavox's, Pilot PP-6BQ5 amps, DGSE-1, Decware SE84 clone and lastly a 6B4G direct coupled SE.
For me, that provided a taste of some of the best of the major topologies that were within my budget. All were very good and I could live with most of them as my only amp. I DID decide that SE fits my goals and listening style and music taste the best.
I'm moving on to home improvement projects and am not planning on building much audio for a while so I decided to sell most of my audio gear to keep one nice rig that I considered the pinnacle of my 10 year audio and DIY journey.
I enjoyed the 6B4G DC amp very much and it was the one last topology that i had never experienced. It was more expensive and complicated than the schematic led me to believe. I would say for the added cost and complexity, it wasn't worth it.
So, I sold it and since I had a parts bin that I didn't want to waste, I built one final amp (for the time-being). Taking elements from the KT88SEUL and the JE Labs EL34, what I came up with is closer to a JE Labs EL34 than the KT88SE.
I have to say that this IS a sweet sounding amp. It has fine bass, great stereo separation & a quiet black background. I don't hear any short-comings what-so-ever compared to the Fi type 6B4G DC SE amp.
The differences between mine and the JE Labs include:
0.1 Intertechnik Plus coupling caps
CLC filter with 30uF (film) 10H 200uF (lytic)
Transcendar 15watt OPT and choke
500 ohm cathode R's on the finals & preamp
No volume pot
200K plate to plate feedback