Audio Research Manuals & User Guides

Audio Research Corporation (ARC) is one of the most respected manufacturers of high-end audio equipment in the world. Founded in 1970 in Minneapolis, the company is renown for advancing state-of-the-art music reproduction, particularly through the use of vacuum tube technology. Unlike many competitors who shifted entirely to solid-state, Audio Research preserved and refined tube amplification to achieve 'High Definition' sonic performance.

The company’s product line includes reference-class preamplifiers, monoblock and stereo power amp統合されたリファイア amplifiers, and digital sources. Each component is handcrafted by skilled technicians in their Minnesota facility, ensuring rigorous quality control and longevity. Audio Research products are designed for audiophiles seeking the highest levels of musicality, dynamic expression, and resolution.

• Where are Audio Research products manufactured?

  Audio Research products are designed and handcrafted in their facility in Minnesota, USA.

• How do I install vacuum tubes in my new amplifier？

  Most Audio Research tube amplifiers ship with tubes packed in protective foam. Refer to your specific owner's manual for the numbered locations on the circuit board and match them to the numbers written on the tubes before powering on the unit.

• もし私が amplifier needs service?

  Contact your authorized Audio Research dealer or the factory Service Department directly. Do not ship units without prior authorization.

• Does Audio Research recommend leaving tube amplifiers on 24/7?

  No. While common for solid-state gear, Audio Research advises against leaving vacuum tube amplifiers on continuously to preserve tube life.