https://www.stereophile.com/content/tri-planar-tonearm-steven-stone-tri-planar-iv-ultimate-february-1995
Tri Planar
The Tri-Planar Ultimate 12” Tonearm MAY 9, 2013 by HENRY WILKINSON
https://www.stereophile.com/tonearms/the_tri-planar_tonearm/index.html
The Tri-Planar Tonearm Review By Dick Olsher Various
https://www.stereophile.com/tonearms/the_tri-planar_tonearm/index.html
Tri-Planar Mk VII UII Tonearm Review
http://www.soundstage.com/vinyl/vinyl20080915.htm
Tri-Planar Ultimate II Tonearm Review
http://www.dagogo.com/tri-planar-ultimate-ii-tonearm-review