What's Your Advice, Used Audio Research LS15, Or Freya+?

Good choice zerobias. Once you get it start thinking about new tube and get a good PC to bring out the best sound. If you need a headphone  amp I like the Drop/Cavelli CTH amp. It goes for $175 on Drop.com and I love mine using with Grado SR325i and HIFIman HE4xx from Drop.

@zerobias the new modal with detachable cord has Infini Caps which where a upgrade to the REL cap in the older modal. If yo sent the older modal out to ARC for a cap upgrade it would cost about $600. I have had my LS15 for 16 years and am the second owner with no problems at all, works perfect and sound great.

I cant speak on the Freya+ but I have had a ARC LS15 for over 15 years and its a great preamp. I've change tube to Tele 7dj8 and its sounds fabulous. Its now in a second system with a ARC LS25mki taking its place.

@zerobias HiFI shark haas a silver LS15 coming out of Az for a good price https://www.hifishark.com/model/audio-research-ls-15. I have nothing to do with the seller at all. The ARC LS15 will kill the Freya+ in sound. I would highly recommend get a ARC piece over Shitt. Shitt makes some nice cheap gear, I had a Mani phono stage and was very happy but then I finally got a ARC PH3 and now Im more that happy. Good luck and happy hunting zerobias.