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Preamp for Burmester power amp

Hi all, I am new to here. Currently I am using JRDG Capri with Burmester 956 Mk II power amp, to drive ATC SCM40 V2. 

I intend to to upgrade the preamp (as I think it’s the weakest part), among Pass Labs XP12, Ayre KX5 Twenty and Bryston BP 17 Cubed, which one u think is a better match with my Burmester?
nibongese

Showing 2 responses by atmasphere

atmasphere's avatar
atmasphere
11,569 posts
 
 kalali1,378 posts08-10-2018 3:09amWhy would anyone design an amplifier with only an 1,880ohm input impedance? It makes very little sense unless they want to force the buyer to (also) purchase their supposedly matching preamp. Just curious.
This is a classic con job, it happened with a hiend English company who designed their full range speaker to be way overdamped. Which worked perfectly with their sister companies well underdamped amplifiers.
Its more likely that they built the balanced inputs to support the balanced standard, which expects fairly low input impedances. Any source with an XLR output should be able to drive this no worries, but sadly, this practice is rare in high end audio.
atmasphere's avatar
atmasphere
11,569 posts
 
3)The balanced inputs of your amp have an **extremely** low input impedance of 1.88K. I suspect that the Pass and Ayre preamps would be able to drive such a low impedance with good results, but it would probably be a good idea to check with the manufacturers to be sure.
I know of a few tube preamps that can drive low impedances like this no sweat, and balanced as well.
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