| Technofile | https://www.technofile.com/articles/bryston.html |
| SoundStage | https://www.soundstage.com/revequip/bryston_4b_st.htm |
| Stereophile | Stereophile: Oct 1999, vol 22, iss 10, Greenhill |
| Sound & Vision | Sound & Vision: http://www.bryston.ca/reviews/bp25/svrev.html |
| Studio Sound | Studio Sound: http://www.bryston.ca/reviews/4bst/ssrev2.html |
| Quebec Audio | Quebec Audio: http://www.bryston.ca/reviews/4bst/quebec.html |
| Audio Magazine | Audio Magazine: http://www.bryston.ca/reviews/4bst/audio.html |
| HiFi Test | HiFi Test: http://www.bryston.ca/reviews/bp25/hifitest.html |