Company Yamaha released new monitor headphones HPH-100 with closed-back architecture. They can reproduce sounds in 20 Hz – 20 kHz frequencies range, their membranes have 40 mm size, impedance is 46 Ohms, sensitivity is 103 dB and maximal power input is 1000 mW; manufacturer does not tell which magnets are used, but, most probably, neodymium. To one of the cups 2 m cable with 1/8″ mini-jack plug is connected ( there is 1/4″ jack adapter in the package ). Device’s mass is 148 g ( they are very light for monitor headphones with such membranes ). Package contains : Yamaha HPH-100 headphones themselves, 1/8″ mini-jack – 1/4″ jack adapter, warranty card and user’s guide. All in all headphones have no some very notable technical characteristics, but they are produced by very long well-known manufacturer, which produces high-quality devices without some kind of overbranded with marketing stuff, and quite interesting price : 40 – 50 USD.