 As a result, his solos remain only on "Desert Girl" and "The Thinking Stone".François Couture at AllMusic gave "Quantum" four stars out of five, calling it "a quantum leap above previous Planet X releases" and "a surprisingly mature album".He praised the album's stronger compositions and better diversity over previous Planet X material, and listed "Alien Hip Hop", "Matrix Gate", "Space Foam", "Kingdom of Dreams" and "Desert Girl" as highlights.