- Double chest-piece made of either stainless steel or pleasantly light aluminium.
- Special membranes on both sides, Ø 48 mm and 36 mm, with particularly flat and soft non-chill rims for improved adaptation on the skin.
- Overall length: 77 cm.
- duplex® de luxe is supplied with two pairs of replacement ear-tips, a replacement membrane each and a name plate.
100 Hz – 1,500 Hz max. 22.0 dB at 300 Hz