Anawiev ams0100-2300 module amp problem,plese for help

Im have some problem with my anawiev module that I have not have before.So my problem is,that I just put together nice tube pre with 27 triode with bartola gyrator on the schematic from Ale Moglia and when I conect this pre between my cd player(Ah Tjoeb tube cd) and Anawiev module,the left chanel is about 6dB lower in volume then right chanel that sounds normal.Why is this now the problem,becouse with my other transistor preamp and my cd player that have volume control,when I conect this component with SE conection with my Anawiev module I have no problem at all.So to say my sources have all SE output and the input on my Anawiev I conected so that hot is on the centre pin of rca and cold and earth are on the body of rca(hot is + and cold is -).Iv see this method by some other members that have use SE source ouput to conect to Anawiev diferencial input.And like I say this conection work superb with my cd player without problems and with my other tranzistor preamp also.And the story is also verry interesting when I conect this new tube 27 triode pre with some other amps from my friends like marantz pm17,hiraga le monstre or electrocompaniet amp2,I have no problems in this case also.So what is wrong that this tube pre will not work with SE conection to the Anawiev module??Iv checked three times now the pre and all is done like it shuld be,but becouse I have now in my system this Anawiev module only for the amp,I will be happy to solve the problem.Thats why I ask if someone out there have had the same problems maybe when conect tube pre with SE ouput with Anawiev input.Plese for help.
 
Last edited:
This is the schematic from 27 triode tube pre from bartola,the diference is only that I dont use battery bias on grid but fixed resistor on the cathode with bypass capacitor.
 

Attachments

  • 27-Preamp-v01.png
    27-Preamp-v01.png
    34.8 KB · Views: 83