Need advice replacing my preamp

'my' personal experience running 100% true differentially balanced systems is that "I" have heard the difference between 0.5M XLRs and 1.0M XLRs from the SAME company: Eichmann Express Copper. Now that was ~ 10 years ago but I never tried it with other XLR cables

@tweak1 @jimbones  If the equipment does not support the standard, you'll be hearing differences between cables. That is also why you see so much disagreement about the value of balanced operation.

@atmasphere  I agree, I am trying to rule out the cables first. BTW I should have clarified that I would like to go Solid State and fully balanced over time. The idea is as I am getting older I dont want to futz with tubes and noise issues so I want to position myself with equipment that will give me that reliability and low noise. Thanks.

Atmosphere

When Paul McGowan started selling reasonably priced true balanced preamps I made the switch. True balanced preamps I have owned includes several PS Audio preamps, Lector Audio (special ordered), Parasound (although the pres are 100% true balanced their balanced IOs are), Audio Alchemy DDP-1. Virtually all amps were monoblocks, with the exception of my EVS 1200 which is dual mono 2 AS1200 IcePower modules, but one power cord, although there are 2 PC IECs installed

What about the Benckmark preamp? 

I was running 12 Meters of  Mogami XLR Cables from Atma-Sphere MP-1 to the mono-blocks. could not tell that between the Purist audio XLR Neptune which cost thousand of dollars.

However the above system was from Atma-Preamps to Atma-Poweramps.

When i tested Atma-Pre-amp to a SET amplifier Cables made a diffrent. So i dont know how this works on the AES ralph talks about but it seems other manufacture XLR balanced connection don't really seem fully balanced????