10th Anniversary fête – It's Linear Tube Audio's new fully differential Century monaural all-valve amplifier [$28K/pr] which packs 110/144 watts into 8/4Ω. Three 7063 handle the input and voltage-gain stage, a pair of EL84 are the drivers for the quad of 6JN6 compactron beam-power pentodes. Like all David Berning circuits, RF "ferrite impedance cores" replace classic output transformer and promise broader bandwidth, lower phase shift and zero hysteresis. Three-stage adjustable negative feedback sets bandwidth from 44 – 90kHz whilst output impedance ranges from 0.8Ω in high feedback to 5.2Ω in low. There are switchable RCA/XLR inputs and twinned binding posts for bi-wiring. Each amp weighs just 12kg, features auto biasing and global voltage acceptance from 100-260VAC to suggest a switch-mode power supply.
