APC incorporates three tuning gates into the main headphone speaker, helping to control the sound pressure.
The tuning gate controls high, low and mid frequencies to provide deeper bass and clearer treble.
You also get Virtual Cavity Sound Improvement technology to minimise the amount of resonance and enhance sound quality around the 1kHz area.
Available from May, the HJE700s have an elliptical design to fit more comfortably within the human ear. They are supplied with three different ear pieces – small, medium and large.