Hello,
I own the Helicon 400s but have not heard the AZAs. I am running them with a Dared 845 tube based SET at 22wpc. I never go over 12:00 on the volume and I am floored by the dynamics and how easy these speakers are to drive. I can achieve very loud volume levels and there is no evidence of amplifier stress in the music. It is clear and very detailed throughout the musical range. I had reservations trying this combo but I am now sold many times over. It must be the relatively flat impedance that makes it amplifier freindly. In addition the Helicons WAF speaks for itself. My wife actually said " they areto nice to keep in the loft".
I own the Helicon 400s but have not heard the AZAs. I am running them with a Dared 845 tube based SET at 22wpc. I never go over 12:00 on the volume and I am floored by the dynamics and how easy these speakers are to drive. I can achieve very loud volume levels and there is no evidence of amplifier stress in the music. It is clear and very detailed throughout the musical range. I had reservations trying this combo but I am now sold many times over. It must be the relatively flat impedance that makes it amplifier freindly. In addition the Helicons WAF speaks for itself. My wife actually said " they areto nice to keep in the loft".