Pre Amp for $400 ??

SF Line 1 can be repaired. It's not sophisticated amp and Chris at partsconnexion is very cooperative with others techies.
Keep that in mind.

Look for a old tube tech; there's plenty of them around. Might not be that hard to fix. No $400 preamp is going to come close to what you're used to. I preferred my former ModWright SWL 9.0 SE over the SF Line 1 and if you wait around you can find one for around $900. 

Yes it needs to be repaired, I am wondering if maybe I should buy something else for the cost of the repairs and the hassle of shipping across the continent and over the border.

Did you have a SF Line-1? Did you get things figured out on that and are you looking for a $400 preamp to replace that or for another system? 

A true audiophile product with remote @ $400 is pretty tough... The Sumo & McCormack are both nice sounding pieces.... the Low end Classe models actually do have remotes available and $400 does happened on occasion for a CP 35 or lower, you may find a B&K with Remote.  At $600 to $800 you'll start finding more options with remote.... other than that, they'll be unproven,  but there are a few decent looking Chinese pieces on Fleabay.

Thanks - I should add that:

1. I don’t need a phono stage,

2. But I do want a remote - and one that can switch sources, not just change the volume

Bryston 0.5 B is another preamp I will vouch for.

Coincidentally upon looking there happens to be a SUMO that is available https://www.audiogon.com/listings/solid-state-sumo-athena-0620-preamplifier-2016-04-11-preamplifiers...

Here ya go !
https://www.audiogon.com/listings/solid-state-classe-model-thirty-preamplifier-black-with-phono-2016...

You will have a tough time finding a CP-60 for $400, even without phono. A CP-30 will be closer to the ballpark. Both of them are nice smooth transparent preamps.

Be careful not to have any caps changed prematurely. I have much older gear that was not ready for cap freshening, they checked out fine. As long as quality parts were used. Its a good idea to have a check-up from time to time. But be careful choosing a tech. Classe was never one cut to corners in my opinion. 

The McCormacks are great values.Possibly a Sumo or NAD. Carver preamps can be purchased in your price range. I have never owned one and cannot comment on performance. Chances are one might have nice synergy with the Sunfire.

Yes It's McCormack Micro Line Drive. Hunt on ebay to find it.
Also earlier Classe preamps such as CP-60 or CP-30 can be beneficial with XLR outputs.
I'd make sure I service Classe preamps with new caps before using.