Thanks for the reply. After listening over and over to select records in the past week. My conclusion is some recordings may not have the low end I think I should be hearing, with others it's just kinda flat. On that note it maybe time to mod the Dynaco. Your analysis did help, thank you.
Also..I am looking to upgrade my exhisting pre-amp. Looking for a tube unit. I'd prefer not to go w/an 40 yr old unit only upgrade it. I would like to find a new unit. I keep seeing Blueberry on the forum, and have read as much as I could per JM's site. I need to get a users feed back on their experience w/this preamp. If it is the gold standard decribe to me what it gives you that your previous pre-amp didn't, etc.
Thanks, Adam