Audio Research
Audio Research Corporation was founded by William Zane Johnson in 1970 and is located in Plymouth, Minnesota, USA. They were pioneers at advancing the state-of-the-art for audio reproduction in the 1970s, re-introducing the vacuum tube as the primary active amplification device. Audio Research prefers the class-A amplifier design. https://en.wikipedia.org/wiki/Audio_Research
Brand 12
| Title | Function | Dates_produced | |
|---|---|---|---|
 | DSPre | Amplifier, Pre | |
 | LS-15 | Amplifier, Pre | 1996 |
| LS-16 | Amplifier, Pre | ||
 | Magneplanar T-10 | Speaker | 1972 |
 | PH8 | Amplifier, Phono | |
 | ST-70-C3 | Amplifier, Power | 1977 |
| Tympani I | Speaker | 1973 | |
 | Tympani IB | Speaker | 1973 |
| Tympani IIIA | Speaker | 1974 | |
| Tympani IIIA-TM | Speaker | 1974 | |
| Tympani IIIA-W | Speaker | 1974 | |
 | VT100 | Amplifier, Power | 2001 |