On March 29th, 2005 Todd A. Price with Blogcritics.org released a review of the Simpl A1, "With the Simpl A1 ($149.95) headphone amplifier attached to my iPod, the player looked like it was wearing a jet pack. That’s appropriate, since switching on the amplifier is like applying rocket fuel to the iPod."

Todd A. Price claims: "At that same moderate volume range, the Simpl A1 delivered a livelier, more sparkling sound."