Tekton Double Impacts

Since the 300B amplifier's architecture uses dual 6SN7 stages, and I omitted cathode bypass for the benefit of greater detail, the gain of the amplifier is very close to that of an integrated, however two un-bypassed stages is just shy of being able to be driven by line level (bypassing the cathodes fixes that but at the expense of some natural cathode feedback that occurs and as such, some micro-resolution is compromised- so I chose against bypassing them). Since 2 stages is just shy- and three stages is too much so to speak, the solution I chose was to incorporate an input level potentiometer on the amplifier which occurs between the preamplifier and the amp's inputs. A plug in attenuator is simply a series fixed resistance followed by a fixed shunt resistance (which is many cases loads the input excessively), the potentiometer performs the same duty except we're able to select the 100K shunt between input and ground which is an easy load for the preamp's output to drive.

On another note, I'm not sure if I'm over-staying my welcome by posting details about my gear on what is the Tekton thread, and I enjoy posting here, but if any think it's more prudent to bounce any of these conversations to an Aric Audio specific thread, feel free to post at the link below:

https://forum.audiogon.com/discussions/aric-audio-systems-unlimited-preamp

Best wishes, Aric

Aric,

In my opinion,  your posts here are welcome as your gear for many is a very nice match for many DI/SE owners.  I've also learned a bit from your posts--and that is always a plus.

Thanks Corelli that's much appreciated!

+1 Corelli. Aric your contributions are an asset IMO.
Charles 

Agreed...stated with some bias, obviously.