The original Aikido Preamp design was here:
https://www.tubecad.com/2004/blog0011.htm
The circuit was popularized by John Broskie.
Hi blog is Tube CAD Journal
https://www.tubecad.com/
The Aikido Preamp is going to have quite a bit of gain, perhaps 10x (20dB).
If you want something that adds no gain but still offers some (albeit minor) benefit, you could try a simple cathode follower as a preamp. Something like this perhaps: https://www.diyaudio.com/community/...r-tube-buffer-using-6n6p.169150/#post-2228200
That thread is from 2010.
Simple Tube Preamp threads:
https://www.diyaudio.com/community/threads/6v6-line-preamp.102352/ (from 2007)
https://www.diyaudio.com/community/...the-12b4-better-than-the-grounded-grid.68267/ (from 2005)
As you can see, this topic has come up before.
There are many other possibilities, and many more threads.
https://www.tubecad.com/2004/blog0011.htm
The circuit was popularized by John Broskie.
Hi blog is Tube CAD Journal
https://www.tubecad.com/
The Aikido Preamp is going to have quite a bit of gain, perhaps 10x (20dB).
If you want something that adds no gain but still offers some (albeit minor) benefit, you could try a simple cathode follower as a preamp. Something like this perhaps: https://www.diyaudio.com/community/...r-tube-buffer-using-6n6p.169150/#post-2228200
That thread is from 2010.
Simple Tube Preamp threads:
https://www.diyaudio.com/community/threads/6v6-line-preamp.102352/ (from 2007)
https://www.diyaudio.com/community/...the-12b4-better-than-the-grounded-grid.68267/ (from 2005)
As you can see, this topic has come up before.
There are many other possibilities, and many more threads.