Upgrade my Sonic Frontiers Line-2, or buy a used solid state Pre?

Send your Line 2 to Chris for the upgrades before you go SS. I think you'd have to make the move to the XP20 to do better. The Line 2 will hold its own with your future plans. Get the Pass amp first and see how your Line 2 does. If you're running Sovtek tubes and etc. not NOS tubes you've never heard what the Line 2 can do. Plenty of info out there on what tubes in your preamp are the more critical ones to change out. My Dad has a Line 1 and tubes can change that piece a lot from being good to really good. Also a PC is very important on that piece as well.

Well I’ll offer a different view. I’ve never been a fan of Sonic Frontiers gear, and it’s hard for me to believe. On paper, they look to be wonderfully built units, but any SF preamp, amp or DAC that I’ve heard has been very dry and sterile sounding. I am a tube fan, but I have heard better SS gear than SF.

So I would suggest keeping an eye out for a used Klyne preamp. You should be able to find one in your price range. However, because they are so good, they tend to be hard to find on the used market. You would be hard pressed to beat a Klyne, even at twice your price range, IMHO.

As for amps, does that 30 watt Pass amp really drive those speakers?
I guess if you are using a powered sub the 30 wpc may be enough.

Tell me more about Klyne?
I am a Pass Labs fan.  Happy Listening!

Jmcgrogan2, I'll know soon enough if the amp drives the speakers. The speakers are 86.4db sensitivity, but I don't listen at loud volumes. The xa30.5 actually clips at 130w at 8 ohms. I expect a bigger amp would provide more powerful, detailed bass, but I'm more concerned with the midrange and up. My budget was $3k on the amp. I don't think I could do any better than the XA. From where I'm coming from, I don't think I'm going to be disappointed with the bass anyway.

Adg101, I have a new set of EH tubes. I used to buy NOS tubes, but they've become crazy expensive.

Very Happy with the EH tubes I run in my ModWright. I use EH tubes from Cryoset Certified and have been very pleased with them. 

I recently picked up a set of Daedalus DiDs Isolation Devices which I can't speak highly enough about. Took them over to my Dads system to throw under his Line-1 and it made a huge improvement on his pre as well; really opened it up. 

The SF Line series of preamps are more solid state sounding than an older ARC and CJ tube pre's I agree but not dry. You throw in the right tubes and it's another story. My LS36.5 is a killer preamp but it's not a big fat tube sound either, but I'll throw it up against much more expensive SS preamps any day. Obviously we all have our own opinion on what sounds right.

You already own the SF. I wouldn't give up too soon on it. I have a Pass amp as well and I think you throw on a nice power cord and some DiDs under your Line 2 you'll be amazed. For the money WyWires Silver Juice II is great; it's a very open, transparent PC Get the amp first and play around with your Line 2. 

Good luck