I'm going to try this one again (thank you Brianrost for your previous input). Want to see if and how many of you guys are actually using these, and which is best to spend approx $350 on (the best my budget can handle right now!) I know opinion is a highly subjective thing, but I welcome any and all input! I have been wanting to upgrade to a tube preamp and need some advice. I have a chance to pickup a used Alembic F1X for a reasonable amount, but wanted some advice before doing so. Bottom line: I've never heard anyone really say anything bad about this unit, but I've also never seen one around here to go try out. I wanted to look into the SWR Grand Prix (dealer never has in stock) and the Demeter (nobody has one in Atlanta, and maybe the Ampeg SVP. I've heard raves about Eden and Aguilar, but funds are limited, and these are a bit much even preowned. There doesn't seem to be many of these floating around the used market. I guess that's a good testimonial for all of them, but it's a little tough to make a decision "sight unheard"! I do some studio work, so I would be really interested in hearing from you guys who have used any of these in the studio. Live, I play through a Crest LA901 into a Hartke 410XL, and both basses are passive Fender J's, so if you have any feedback about any of the above preamps with the Hartke cabs, that would be appreciated as well. Thanks!