Threshold T-200. Help me choose a preamplifier


Good day, Colleagues!
Not so long ago, at an auction in Japan, I accidentally won the Threshold T-200 amplifier. I really wanted this brand, but I was looking for the T-800D model. But it turned out to buy this amplifier ... And now I am very tormented with the choice.
I spent two days on the internet looking for balanced amplifiers. Here is a list, is there anything on this list worth seeing?
Pass Labs X1 - 
This preamplifier is sold in Russia at a very good price, it seems to me. 1800 dollars. But I do not know his condition. The photographs show that the cable that connects the power supply and the preamplifier itself is frayed. And the power supply is not complete, but a small black box.
Pass Labs X2.5 - I found this preamp for 2000 euros in Croatia, but shipping will cost around 500 euros, so it is already very expensive for me. 
Black Ice F-360 - A very interesting preamplifier. The ad suggests that this preamp has very high detail and can expand the scene. :) But I don't believe in advertisements.
Leema Acoustics Pyxis ll -  This amplifier is quite expensive, I found it in my country for $ 2500 and this is a showcase sample. It has an impressive range of features, there is a phono stage, which I also need, and balanced inputs and outputs.
Electrocompaniet ec 4.7
Electrocompaniet EC 4.8
Krell KSL-2
Audia Flight Pre
Quad Artera Pre
Rotel RC-5000
Audio research LS-15
audio research LS-2B
Spectron Model 10
Audio research LS 17
BAT VK-30
McIntosh C2200 - But this is already very dear to me.

I really look forward to your help and advice in choosing.

vetusto

Does your Threshold amp require xlr shorting pins when running the amp single ended? 

I don’t quite understand your question... Both XLR and RCA cables are now plugged into the Threshold amplifier. I want to make it so that you can listen to both XLR and RCA by switching the toggle switches on the amplifier. From different preamplifiers. 
Now this is a one-time connection:
NT-505 RCA → Tube Preamplifier → Threshold Amplifier (RCA input)
NT-505 XLR → Balanced Preamp Jeff Rowland → Threshold Amp (XLR input)
NT-505 RCA → Tube preamp → Threshold amp (RCA input) - no sound
NT-505 XLR → Jeff Rowland balanced preamp → Threshold amp (XLR input) - sound
NT-505 XLR → Jeff Rowland balanced preamp → Threshold amplifier (RCA input) - there is sound. WHY THERE IS SOUND? :)))

The NT-505 requires that you define the output - XLR (2 options depending on pins) or RCA.  Did you change that setting on the NT-505 when you connected to RCA?

Yes. When switching to XLR or RCA in the settings of the Teac NT-505, I changed these parameters.

 

NT-505 XLR → Jeff Rowland balanced preamp → Threshold amplifier (RCA input) - there is sound - This connection worries me a lot.