Galion vs Luxman vs Advance Paris vs (anything else)

@ctlesq Rel's website has a cool feature where you can search for your speakers, and it will tell you the best Rel sub that matches it's performance.  If you don't find your speakers listed,  you can always reach out to Rel directly.   I have done that twice, and each time I had a senior Rel employee call me directly which was quite a nice touch.  I ultimately went against their recommendation due to room considerations and the type of sound I was looking for (they recommended two 1510 Predator subs from their home theater line (what they recommend for all Klipsch Heritage speakers), but I wanted musicality instead and went with the S/510s which was the more expensive option and the better fit for my use case).

Lastly, make sure you have a firm conviction about your intended application before you buy.  For example, if you are leaning primarily on sound quality in a 2 channel system as opposed to only occassional home theater use, Rel's Serie S line is a great choice.  But, if you want super slam for home theater use, and only occasional 2 channel use, I would recommend their HT line instead.  Note their Carbon Special sits in the middle of their S and HT lines and is fully competent with both uses (but that dual utility will cost you significantly).  My S/510s are only at 45% power for 2 channel (>98% of their use case), but I need to turn them up to 100% for home theater use (<2% of their use case).

@ctlesq  Whatever sub you choose make sure it's capable of connecting to 'high level input'. This way the subs (hopefully a stereo pair) will fully benifit from the punchy character and dynamics of the new amp you're going to get!  

Discuss this with SVS tech help live on the phone. 

One last point would be to set crossover somewhere around 50-60 hz. and don't  high pass the speakers. Let the speakers breathe!! Run full signal and let the subs fill in the  low end. 

Your system is good but it will be amazing after these additions. (I will confess that I too have been eyeing the Galion amps.)

@genomeip - great advice. I tried the sub finder. Liked what I saw, but I think a phone call would be helpful.  
 

@gdaddy1 I appreciate your suggestions - and agree a phone call would help. Steve Huff did a really nice write up on the Galion. I’ve watched a few videos. But, those were from the owner of the business and of course he is going to say it’s all the best.  But I’m willing to give it a shot. I’d like the next amp to be the amp o own for a while.  I so wish I could see/hear this stuff in person. We shall see!

Below are Galion, Luxman, Advance Paris, and my WT ultra (upgraded WIIM Amp Ultra). WT ultra is all-in-one streamer _ DAC _ Amp. WT ultra and super Linton are all OP needs. No more synergy or cable matching headache. WT ultra comes with an attached Wavetouch power cord. It’s a smart system. Alex/Wavetouch audio

Galion Audio TS34

LUXMAN L 507Z

Advance Paris A12 integrated amp

Wavetouch WT Ultra (upgraded WIIM Amp Ultra) Streamer + DAC + Amp

I don't think you can go wrong with the used Luxman 507z for around $6k---especially since they go for almost $11k new! I bought a demo unit and couldn't be happier. It's a big, heavy, beautiful unit and made in Japan so it's high quality craftsmanship. Good luck and keep us posted.