To those who have moved on from Tube Research Labs Dude and/or Samson

It sounds like you are very happy with TRL amp and preamp.  Why change if you are happy.  I have done that many times and simply ended  up spending alot of money but really not improving my enjoyment of my system.
TRL is great sounding equipment. Enjoy what you have. 

You would be quickly remorseful should you decide and part with TRL gear. For some time I coveted(and still do) The Dude, and tried to great lengths to seek out and procure the highly reviewed beast to no avail. I then worked with Aric at Aric Audio who did his best to replicate the magic of that preamp with a piece called, The Motherlode. It is the piece that has spent the most time in my rig, and will never part with it.

Should you DO decide to sell The Dude, kindly consider reaching out to me in the event that I have the opportunity to piece together a second listening room.

Thank you!

Probably the best thing is to upgrade the Dude.  Better PS Capacitors, volume control caps and resistors.  That will take it to another level for sure.

Happy Listening

Had Samson mono long ago, excellent SQ but lacks bass.   Remember Paul told bias needs calibrated periodically.  Good amp for the money.