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acuhorn S1 tube amplifiers output transformerless type. Single ended, class A. Hi-tech architecture amplifier with Vicor modules DC-DC converters. Audio path solid core PCOCC copper.

technical specifications:
input voltage mains autoranging 90-264Vac 47-440Hz
maximum input power 230 W
power tubes 6C33C one per channel
driver tube subminiature
21 stepped attenuator volume control
output power 1W
weight 2,8 kg
dimensions W 320 x D 320 x H 26 mm