Best system we’ve used so far: ideal for plant/site visits, small to large-size meetings, requiring simultaneous interpretation. Battery life is astounding; never ever have we seen anything longer lasting. As for sound, we’re amazed at the clear quality! The idea of receivers/transmitter only turning on with headphone plug inserted is great! We from Global View, in Belo Horizonte, Brazil, do recommend DSPTech system doubtlessly! We’d been used to top-notch systems, but DSPTech has surely surpassed them all!