What phono preamp are you using?

Icon Audio PS1.2 MC with NOS Telefunken tubes - sounds great with the Tele tubes and Hana ML series cart @ 200 ohm load.  With the NOS Tele tubes (not new anymore) running $400 - $500 each now I thought I'd try a Hagerman Trumpet MC.  It's still burning in but starting to blossom.  I upgraded the power supply with SBooster and installed gold lion gold pin tubes.  The goal is to get this phono stage sounding as good or better than the icon audio/Telefunken combo and it's almost there.  I'm not sure why the IA/Tele/Hanna ML combo sounds so good but it does.  As we know...it's all about getting the right match of components that work well with each other and I just got lucky with that combo.  Another highly knowledgeable friend of mine recommended the Trumpet MC.  He's had his a while now and loves it.  It comes highly regarded as probably the best value in a phono stage right now.

"Did you get the 15-16V unit?" 

I did get the 15-16V unit.  I've kept it at the 15V setting.  1 volt isn't a big jump in potential.  I'm guessing it wouldn't cause an immediate catastrophic failure.  It could be that the unit would be operating on the high side of nominal voltages and that would be okay but I'm just speculating.  I'm a mechanical engineer and only know enough about electrical to get into trouble.  It would be a safer bet to get Jim's input.  I'll ask my friend who did this same setup if he has tried any other voltage settings.  He's been in contact with Jim and very electronics savy.  

@bekeske  Jim's response makes sense and compares well with my contact.  He of course recommended checking with Jim to be sure.  His thoughts were it should be okay.  The tubes would likely run a bit hotter and thus might cut tube life a little shorter but this would likely depend on the tube design itself (some are more sensitive to running hotter than others).  Ran my system a good amount this weekend since it was rainy outside and the Trumpet is really starting to shine.  I think it's pulled up along side my other setup that I'm very fond of.  It may even be better in detail, settling on the right amount of warmth.  The depth/width of soundstage is what I've been waiting for which is where my IA Tele combo really excelled.  Sound stage on that combo is very good.  Once I get some a little more time on the Trumpet, I'll A/B them.  Currently, I'm not running dampers on the tubes.  I think I like them off for now.  These tubes seem fairly low in microphony for now at least.  I suppose that could change and I'm told a little pinch of microphony is not necessarily a bad thing.  

@bkeske

I would agree it sounds surprisingly good with the wall wart and if you're stock tubes are working well, probably leave those alone too.  Mine no matter what order I placed the 4x 12ax7 tubes, I had a balance issue so I ordered up matched gold lions and this sorted it right out.  The lions are really starting to shape up.  I will have an opportunity to AB against my friends with stock tubes April 24. We both use the SBooster supply, thus in theory any noticeable difference will likely be in the tubes assuming we have similar break-in and ignoring any production variance (not a likely contributor).