Electrostatic headphone amplifier recommendation


Finding a reasonably priced electrostatic headphone amp is proving harder than I thought.  It seems like everyone likes the blue Hawaii  for my stax 'phones (SR 009) but at $6k!  Yikes!  I'm hearing mixed things about Staxs own amps, that they can be a little noisy.  Looking to spend less than $2500 ( used).  

russellrcncom
I use my Stax SR L700 ($1500) with a Stax SRM 006s driver ($1300) using NOS RCA clear top tubes, and get great results.

I used to own a Stax SR 009 headphone, but that was too overly detailed, and "bright " for my tastes.

I have heard very expensive driver amps that are not any better.