I first discovered the Eficion F300 loudspeaker ($14,800/pair) at RMAF 2008, where its full-range sound deeply impressed for the price. Since then, the speaker has undergone numerous refinements. Split into two separate compartments, separated by Stillpoints, this is a 3-way 4-driver vented box with a frequency response of 25Hz–40kHz, 89dB sensitivity, and 8 ohms impedance, with a minimum of 6.4 ohms. The front tweeter is an Air Motion Transformer, its rear-firing super tweeter a Heil ESS aluminum ribbon, and its 7" midrange and 12" woofer both from Aurum Cantus. All this has produced a more controlled and detailed sound. Other refinements are identified on the Eficion website.

At least two people I know came up to me in the hallways of the Marriott to urge me to check out Intuitive Audio's new Gamma Summit speakers ($10,000/pair). As soon as I walked into the room, the fabulous bass on Patricia Barber's rendition of "Keep on Using Me Until You Use Me Up"—I'm guessing at the title—told me why. The system's riveting presentation also featured the kind of musical highlights for days that audiophiles love. Next I heard the same Mahler Symphony 2 recording I've been playing a lot at RMAF 2009. The speakers did an extremely fine job of controlling and highlighting the bass line, and also sounded very vibrant on top. Congratulations to designer Dale Pitcher for a job well done.

<B><I>Stereophile</I>: </B>You are president of Esoteric Audio Research, a British manufacturer of tube amplifiers, and a world-renowned designer of tube equipment and output transformers. I thought we'd begin with a little background. Where were you born? What kind of education did you get to prepare you for a career in audio?

<B><I>Stereophile</I>: </B>You are president of Esoteric Audio Research, a British manufacturer of tube amplifiers, and a world-renowned designer of tube equipment and output transformers. I thought we'd begin with a little background. Where were you born? What kind of education did you get to prepare you for a career in audio?

<B><I>Stereophile</I>: </B>You are president of Esoteric Audio Research, a British manufacturer of tube amplifiers, and a world-renowned designer of tube equipment and output transformers. I thought we'd begin with a little background. Where were you born? What kind of education did you get to prepare you for a career in audio?

<B><I>Stereophile</I>: </B>You are president of Esoteric Audio Research, a British manufacturer of tube amplifiers, and a world-renowned designer of tube equipment and output transformers. I thought we'd begin with a little background. Where were you born? What kind of education did you get to prepare you for a career in audio?

<B><I>Stereophile</I>: </B>You are president of Esoteric Audio Research, a British manufacturer of tube amplifiers, and a world-renowned designer of tube equipment and output transformers. I thought we'd begin with a little background. Where were you born? What kind of education did you get to prepare you for a career in audio?