Decent preamp

I'm in Chicago. That Eico looks good but I've never heard of the brand. Have you had a chance to listen to it?

No, I just did a curiosity search on eBay. I've never seen or heard one.

Eico was back in the day of buying Kits to assemble yourself, or buying factory complete assembled units. 

a budget brand, (with features and specs equal to the high priced stuff). It's a lot of preamp for that price, other brands, equal features, will ask far more.

https://www.hifiengine.com/manual_library/eico/st-84.shtml

https://www.audioasylum.com/forums/amp/messages/5646.html

http://www.tronola.com/html/st84_mods.html

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OTHERS....... Eico?????

Quicksilver or c-j.....    can be found for around or slightly more, huge value used of you can buy them right. 

Vincent Audio PHO 701. Excellent $599 unit. Very satisfied with the one I have in my main system. 

If all you need is a selector and volume, check this out:  https://www.aliexpress.com/item/32968579204.html?spm=2114.12010612.8148356.36.422e1340ix3rkL
I bought one from Ray Mottram of tubes4hifi.com under his SP10 model number, but it's the same item.  DO NOT get the remote control version!  The simpler hands-on one is the way to go.  I use with hot rodded Dyna ST70 and it is clean, quiet and liquid sounding with the stock Chinese tubes.