The inspiration for this project

Thanks to Esa Meriläinen for the inspiration for this current-drive project.

For more information about current-drive, see his site and book:
Current-Drive – The Natural Way of Loudspeaker Operation

A peer-reviewed research paper by Esa Meriläinen:
Comparative Measurements on Loudspeaker Distortion: Current vs. Voltage Control

About current-distortion

For more information about loudspeaker distortion (KLIPPEL GmbH):
Loudspeaker non-linearities

About the Carver Challenge

Carver caused a stir in the industry in the mid-1980s when he challenged two high-end audio magazines to give him any audio amplifier at any price, and he’d duplicate its sound in one of his lower cost (and usually much more powerful) designs.
Bob Carver Corporation
The Carver Challenge at Audiophile or The original article

About professional sound engineering

And thanks to Michael Klein (his name is Small, his Magic is great), professional sound engineer at MK Stage and Sound, who helped me tuning the in-room response and translating ‘some more warmth’ and ‘a bit crispier’ into Herz and decibels.