In 2016, the Nu-Vois Research and Development team has decided to invest in a project to upgrade the circuit boards of the Nu-Vois II devices. The new circuit boards provide improved clarity of sound, particularly at higher volumes. The new boards have also been designed to require less battery usage, increasing the amount of time your device will operate between battery recharges.
Beginning in April 2017, all Nu-Vois II devices will be shipped with the new circuit board.