Audio Research S-100 Stereo Power Amplifier The Audio Research founder Bill Johnson demanded that solid state designs never fail to engage the listener. In this way, they were to follow the north star of their Reference Tube Amplifiers. Fulfilling this demand, the S-100 solid state amplifier defies the customary limitations to musical expression and purity that otherwise plague this class of product. Like the S-200, the S-100 is a pure Class A/B design, on a dual mono platform. Despite being scaled down from its larger sibling, the S-100 is conservatively rated and doubles into 4 ohms via dual toroidal transformers and a fully balanced stereo circuit. Once again, bipolar transistors were chosen over MOSFETs for their purity, transparency, and better dynamics. Beginning with a beautifully machined aluminium chassis in either black or silver anodised finish, S-series amplifiers nod to the classic Audio Research design character, but from a sleeker and more modern angle, with custom machined heat sinks and no visible fasteners from the front or top. The S-100 and S-200 amplifiers represent the Audio Research latest and most advanced entries into solid-state amplifier design. After all the measurements and bench testing, every product is proofed by ear, as it has been for decades. All of their S Series amplifiers are produced in our Minnesota facility alongside their Reference Tube Amplifiers. Audio Research S-100 Specifications Power Output – 100 Watts channel into 8 ohms, 200 Watts channel into 4 ohms THD – <.1% from 0.25W to rated output into 8 ohms @ 1Khz Input Sensitivity – 1.4V RMS Balanced for rated output Input Impedance – 100kΩ Balanced or Single-Ended Gain – 26dB Input Sensitivity – 1.8VRMS for rated output Noise – <60µV output Frequency Response – /- 0.1db from 20Hz to 20KHz Damping Factor – ?? from 20Hz to 1KHz Power Requirements – @120VAC, Standby: 0.25W. On, idle: 48W, Rated output: 475W Dimensions – Width 19″ (48.26 cm), Height 7” (17.78 cm), Depth 17.5” (44.45 cm) Weight: 41lbs (19kg) Net, 63lbs (28.5kg) Shipping FacebookShare on XLinkedInWhatsAppEmailCopy Link
