Mattisson Series IV 6 Strings Bass - True Temperament Fret | unisound
Bass Buddha
Bass Player Magazine - Henrik's extra-long scale Mattisson 6-string bass, designed to be tuned A-Bb, with a capo to put it in standard B-C range. | Facebook
Mattisson Bass - Anyone Had Experience with This Maker? | TalkBass.com
Mattisson Series IV Singlecut 6 String Bass Guitar – Ish Guitars
Mattisson Series I Janek Gwizdala Signature Prototype 5-String Bass | Reverb France
High end bass guitar brand Mattissonbass starts production at the TT Factory - True Temperament