Comparation between Opera Quinta 2011 and Focal Aria 948 resulted in a clear superiority of the Opera as concerns the resolution and control of the basses, while the mid-high section was enjoyable in both speaker systems. The control of the bass was deficitary with the Focal especially with dificult analog oscillator synth basses performed by Radiohead and Ozric Tentacles or Acoustic bass in the piece "Flight of The Cosmicippo" by Bela Fleck.