Audio Research D-79

Audio Research D-79 tube amp. Of the 3 series of this amp made this is from the "a" or first series. Considered to be the most warm sounding of the series. Unit sounds great, has had the 12 AX7 tubes replaced. The main output tubes have not been replaced but should have plenty of listening time l...

Audio Research D-79 tube amp. Of the 3 series of this amp made this is from t...