Which preamp for a pass labs?

All the "balanced" hype is pure BS.

It has it's place with long runs of interconnect >10mts for less noise.

But you are more right than you know, when you say it's BS.
  
As many sources, preamps and poweramps with balanced inputs or outputs are fake!!
In that they are single ended topology circuits, with just an opamp on the input or output to make them have balanced inputs or outputs.

All along you'll get better sound using the single ended inputs or outputs on these because then you are bypassing those opamp/s.

Cheers George   

mizioa
Which preamp for a pass labs?

Try a Schiit Freya for a trial period, it’s got all the flavours, passive, solid state, and tube switchable while your listening, your bound to find the right combo for your system.

It also has SE or XLR inputs and outputs, the best volume pot there is, a 128 relay switched, even has a remote.

It’s not a glitzy show piece, but it’s got what counts, under the hood, at a very reasonable cost. $699 it's a steal.
http://www.schiit.com/products/freya

Cheers George