Driving a Thiel

Dave43 is right, so I will go ahead and be the fourth to tell you that your receiver is a poor match for these fine loudspeakers.

Not to say you shouldn't follow Cmalak's advice and get the Thiels of your choice and then move to better amplification as your budget allows. Just make sure that your Marantz receiver is capable of driving <4ohm loads, otherwise you will soon be listening to the wonderful sound of silence.

Better yet, why don't you pick up a pair of used Thiel 2 2's for about $800 (IMO these sound better than any of the models you mention) and use the extra funds to buy an amp that will do the job well.

Good luck.

You can get a bel Canto s500 or S1000 for amp needs for the Thiels. They sound very good together.

I am a Thiel dealer and I have found Thiel loudspeakers to work best with class AB, or class A amplifiers.
I like them best with Plinius myself.
Anything high power and high current should work well!

No, your reciever will run out of power. You will need an amp with some ba..s for any Thiel speaker. Just because an amp has hi wattage does not meean it can handle Thiels. Whatever you try make sure you can drive them at the volumes you really want to listen at. Do not baby them, other wise when you want volume you may not get it. Thiel speakers will give most any amp a through workout. Some high power amps in the 500 to 1000 watt range must be modded by the manufacturer to deal with Thiels.
Thiel makes great speakers they just have a wide ohm range and need lots of power to sound their best.
I have Moon W6's, they cannot drive Thiels with any justice.
Enjoy

I totally agree with Buff

I have Thiel2.4 and I think Cmalak never listened his speakers yet.
I strongly suggest Cmalak to put a powerful SS amp behind the 2.4 and listen how much them sound differently
I use the Parasound Halo JC1's , kinda 400/8ohms and 800/4ohms to feed my 2.4 and I bought them from a guy with ARC monos 120 .. he's another one that never listened this speaker correctly powered.
It's a impedence matter .. tubes can't correctly copy the long fall into 2 ohms that 2.4 has in the mids territory where on the contrary the powerful and good SS amps floodlight that area.