Preamp for First Watt F7

For an affordable but excellent passive pre try one from Luminous Audio. They customize to your system. I recommend the Walker mods. Very transparent.

https://luminousaudio.com/collections/axiom-ii-passive-preamp

https://parttimeaudiophile.com/2012/12/30/mini-review-luminous-audio-axiom-ii-walker-mod/?amp

Quicksilver is very nice and warmish….. So is a Belles 20A if you can find one….

@coaster86 

I think the Van Alstine RB10 (which I have) could be a good pairing for the F7 but the F7 has a 10kΩ input impedance. 
If you buy a new one from Frank , he can make an adjustment to one of the preamp outs to be a super low output impedance that will drive the F7 nicely.  I think it drops the output impedance from something like 2200Ω to 47Ω.

@j_andrews -never thought if asking the manufacturer to adjust the impedance to better match - thanks for the tip

Thanks for your feedback. Someone messaged me this article which talks about the synergy of the MicroZotl with the FirstWatt F7. Figured I would share it here. The output impedance I believe is single digit ohms. Worth a shot, I'll probably start here if I can find a used one.