Among your best choices below Boulder pricing is going to be the Sanders line, especially the Magtechs.
http://www.sanderssoundsystems.com/products/amplifiers/amplifiers-more-information
I genuinely don’t know of any amp that has a more overbuilt output stage than his do, nor anyone besides Krell who attempts full power supply regulation in mega amps besides the Magtechs.
The amps are especially built by ex-Threshold people at Coda but for the incredibly hard to drive demands of ESL's which reach 1/3 of an ohm at the top of the spectrum.
Since these are all available for home audition, I strongly recommend you take him up on his offer.
Best,
Erik
http://www.sanderssoundsystems.com/products/amplifiers/amplifiers-more-information
I genuinely don’t know of any amp that has a more overbuilt output stage than his do, nor anyone besides Krell who attempts full power supply regulation in mega amps besides the Magtechs.
The amps are especially built by ex-Threshold people at Coda but for the incredibly hard to drive demands of ESL's which reach 1/3 of an ohm at the top of the spectrum.
Since these are all available for home audition, I strongly recommend you take him up on his offer.
Best,
Erik