Recommendations on a passive preamp

Depending on your budget and your preference for a resistor-based or transformer-based passive you may want to consider:

Goldpoint
Space Tech Labs
Welborne Labs
Electra Print

All of the above will let you have as many inputs and outputs that you require. I just recently went through this process and in addition to those above, looked into the Placette, Reference Line, Luminous, and Bent Audio. In the end I decided to have a TVC built for me by Kevin Carter at K&K Audio that uses S&B transformers. This will run higher in cost than those you listed and some of those I mentioned, but Kevin's work is great.

I have had many passive preamps but none of the ones you are considering.

The best for me have been First Sound Passive and Axiom.

Hope this helps

Fernando

I have been very pleased with my Reference Line 1a passive. The desire for remote control overcame the hesitation at the price. A very well built unit.

I have seen non-remote Reference Line passive go for as little as $400.

I have heard some good things about the Music First pre.

If you can find a Mod Squad Line Drive deluxe on the 'gon it would be worth considering also....