Sony VAIO VGP-BPL12 Extended Battery for VGN-Z5 Series (Silver) Output Signal-to-Noise Ratio (A-Weighted) - 116 dB for Front-out Input Signal-to-Noise Ratio (A-Weighted) - 112dB Output Total Harmonic Distortion + Noise at 1kHz (-3dB) - 0.00056% (-105dB) for Front-out Input Total Harmonic Distortion + Noise at 1kHz (-3dB) - 0.0004% (-108dB) for Line-in More than 10Hz to 48KHz Frequency Response (-3dB, 24-bit/96kHz format)