The Audio Research Classic 60 is a stereo tube power amplifier that was first introduced in 1988. It is known for its warm sound signature and high build quality, featuring four EL34 output tubes and two 6922 tubes in the input stage.

The Audio Research Classic 60 is a stereo tube power amplifier that was first introduced in 1988. It is known for its warm sound signature and high build quality, featuring four EL34 output tubes and two 6922 tubes in the input stage.