The digital ground seems to shift weekly. While firmware and software updates over the Internet somewhat slow the constant upheaval, when you do buy something, you just know that as soon as you plunk down your cash, something new will come along.

So, especially with preamplifiers, why not produce a design based on modules that the user can swap in and out, to custom-configure the preamp to that user's current needs while leaving room for later expansion? Why pay for six inputs' worth of stuff when at present you need only two? Upgrades? New features? No problem—swap out a module. Or, if a circuit in one module malfunctions, you can send only that module back for repairs, not the whole thing.

The stars lined up.

According to biographer Charles Reid, the British conductor Sir John Barbirolli "burned with Elgarian zeal," attributable in part to Barbirolli's participation, as a young cellist in the London Symphony Orchestra of 1919, in the premiere performance of Edward Elgar's Cello Concerto. That performance, conducted by the composer and with Felix Salmond as soloist, was a disaster—Elgar's rehearsal time had been cut short by a lack of cooperation from another conductor on the bill, a slight the composer never forgave—yet from then on, the 19-year-old Barbirolli regarded Elgar's music with reverence.

Friday, November 30, 4–7pm, Music Lovers San Francisco (2295 Bush Street, San Francisco, CA 9411) and Saturday, December 1, 2–6pm, Music Lovers Berkeley (2116 Blake Street, Berkeley, CA 94704) will hold events to celebrate the debut of Wilson Audio Specialties' Sasha DAW loudspeaker. Featured guests will include Peter McGrath of Wilson Audio, Bob McConnell of Transparent Audio, and Jeff Sigmund of Luxman. Attendees will have two listening opportunities to choose from: one each at Music Lovers' San Francisco and Berkeley locations.