"A single-channel head, the Kelemen KR-35 (left) ships with either a pair of 6V6 or EL34 power tubes and a trio of premium 12AX7 preamp tubes. рYou can swap the output tubes for virtually any 8-pin bottle,"" say Joe Kelemen. рIt's easy, because the back panel has bias adjustment points and trim controls that let you balance the power tubes using a volt meter."" Kelemen's KR-25S (right) offers two independent, footswitchable channels. The cathode-biased power section will run on 6V6, 6L6, EL34, and KT66 tubes."

On the weekend of August 21-22, amp builders, musicians, collectors, and tone fanatics from far and wide convened in Music City for the second annual Nashville Amp Expo. The organizers—Creation Audio Labs—reserved the entire Hyatt Place hotel in nearby Brentwood, Tennessee, for the event.

Hundreds of attendees roamed the hotel hallways, stopping at exhibitors' rooms to hear and test drive some of the world's finest boutique amps, and also ogle guitars, pedals, and related accessories. There were seminars too, including a guitar recording workshop led by Michael Wagener (Ozzy Osbourne, Alice Cooper, Extreme, Metallica, Skid Row, Dokken, Mötley Crüe, Megadeth). Our photo gallery brings you a hint of the wild sounds and beautiful gear that made this year's Nashville Amp Expo such an exciting experience.