List thread of true "Fully Balanced" Pre-amps
 

I'm talking not just a balanced in and balanced out. Where the the balanced input is converted to unbalanced and then converted back to balanced for the output.

I'm talking fully balanced, four element volume control, balanced from input to output.

To start here is one (Courtesy Bridge Audio Laboratory) :
http://www.balabo.com/images/product...l_amp_4_lg.jpg

http://www.balabo.com/images/product...l_amp_2_lg.jpg

http://www.balabo.com/images/product...l_amp_3_lg.jpg

McIntosh C500 and C1000 combos

Bob

The Cary SLP-05 is fully balanced.

http://www.mcintoshlabs.com/Assets/I...reamp-l_XL.jpg

http://www.mcintoshlabs.com/Assets/I...reamp-l_XL.jpg

VAC:

Signature Preamplifier MK IIa
Renaissance MK III

Bob

http://caryaudio.com/graphics/produc..._front_800.jpg
http://caryaudio.com/graphics/produc...ck-pre_800.jpg
http://caryaudio.com/graphics/produc...-power_800.jpg

Audio Research Reference 5, 5SE, 40th Anniversary

Ayre KX-R

http://www.vac-amps.com/sigmark2preampblackwh.jpeg
http://www.vac-amps.com/Sig_Pre_Mk2a_back.jpg

http://www.audioresearch.com/images/s/ref5_back.jpg

http://www.audioresearch.com/images/m/ref5.jpg