The Gradient Axis series offers high-quality appearance and excellent workmanship. The measured values can be seen. Massive die-cast basket with small webs, impregnated Kevlar-paper cone, linen double bead, Flirr cone, phase plug-aluminum, two-layer voice coil on Kapton 25 mm and magnetic shockproof rubber. AXP series: The AXP series is characterized by a very high efficiency of more than 93 dB within the usable range. Wherein above 10 kHz even more than 100 dB can be achieved. Nevertheless, they are no PA speakers. Rather, the audiophile characteristics are in focus.