The album Ne Plus Ultra was not reviewed by some famous reviewers such as Allmusic, The Guardian, and All About Jazz.
The Allmusic review noted "This was tenor saxophonist Warne Marsh's first recording as a leader since 1960. The Guardian's John Fordham rated the album 4 stars out of 5, saying, "A largely unsung classic, originally released in 1969, and featuring the most purist of all the followers of Cool School guru Lennie Tristano's ascetically linear method of jazz improvising. Writing for All About Jazz, Nic Jones stated "The passing of time has done nothing to reduce the singularity of Warne Marsh's art, and this set, recorded at the end of the 1960s, is an excellent working definition". 
