Average| Source | Info |
|---|---|
| Stereophile | Stereophile: Dec 2001, vol 24, iss 12, Bolin and Fremer |
| Stereophile | https://stereophile.com/phonopreamps/935 |
| Stereo Times | https://stereotimes.com/amp121002.shtml |
| Positive Feedback | https://www.positive-feedback.com/Issue11/manleysteelhead.htm |
| Absolute Sound | Absolute Sound: Feb 2005, iss 152, Garcia |
| Enjoy the Music | https://www.enjoythemusic.com/magazine/equipment/0402/manleysteelhead.htm |