Part of the Signature Series, the SA-Z1 near field powered speaker system has been engineered to deliver a truly exceptional listening experience. By combining a coaxial driver units layout with time-alignment architecture, SA-Z1 overcomes the trade-off between frequency response and phase coherence - so you can explore a whole new world of sound. The SA-Z1 is meticulously crafted to sit on your desk and provide you with a reference listening experience, whatever your choice of music. Play music from your laptop or PC, hook up your Walkman or Xperia, or use with a dedicated digital music player. The SA-Z1 brings together Sony's legendary audio expertise, with first-of-its-kind custom componentry and benchmark audio technologies. Thanks to a trio of accumulated acoustic, electronic and signal processing technology, SA-Z1 recreates music with exceptional presence and coherence. Well-designed multi-way speakers have a flat and broad frequency response, but disengaging the impulse response (time-coherence) risks a compromised soundstage. Conversely, single driver units offer excellent impulse response but sacrifice frequency response. The SA-Z1's custom digital processing and coaxial layout delivers both - the sonic realism of a precise impulse response, along with a wide soundstage and frequency presentation. [1. Input signal (impulse) 2. Accurate wave form 3. Incorrect wave form].