We were approached by Editor and Chief Thomas Schmidt back in May and were delighted to submit the RV2501 for his testing.

He has kindly translated the review in full which is available for you here. He has produced harmonic distortion measurements as well as a spectral decay waterfall diagram.

Notably he writes,

'there is virtually no distortion right down to the low bass - that is unusually good' 

He also explains the structural differences between the Radial design and conventional loudspeakers. He came to the conclusion that the RV2501 has a level of serious function to accompany it's distinctive form.