Pre Box S3 Your All-in-One Control Centre The Pre Box S3 is a highly versatile stereo preamplifier designed to bring together analogue, digital and wireless sources into a single compact component. Combining audiophile sound quality with extensive connectivity, it serves as the ideal control centre for modern Hi-Fi systems including turntables, streamers, CD transports and televisions. Its carefully engineered analogue circuitry features short signal paths and low-noise design principles to preserve dynamics, tonal accuracy and musical detail. Digital sources benefit from a high-quality 24-bit/192 kHz DAC with precise clocking for low jitter and accurate signal conversion. With multiple analogue and digital inputs, dedicated subwoofer output, headphone amplifier, Bluetooth connectivity, eARC support and custom-installation features, the Pre Box S3 offers exceptional flexibility for both traditional and modern audio systems.   KEY FEATURESProduct TypeStereo Preamplifier / Audio HubDACCirrus Logic CS4344 (24-bit / 192 kHz)BluetoothBluetooth 5.0 with aptX & aptX HDTV ConnectivityHDMI eARC CompatiblePhono StageIntegrated MM Phono PreamplifierHeadphone AmplifierIntegratedSubwoofer OutputDedicated RCA Sub OutputTrigger Output12V TriggerCustom InstallationRS232 Control InterfaceDesignCompact Audiophile Architecture   AUDIO PERFORMANCEFrequency Response20 Hz – 20 kHz (< -0.4 dB)Line Preamp Gain4.5 dBPhono Gain (MM)45 dBChannel Separation-72 dB @ 10 kHzSignal-to-Noise Ratio110 dB (120 dB A-weighted)Total Harmonic Distortion< 0.007%   HEADPHONE AMPLIFIEROutput Power2 × 70 mW @ 32 Ω (1% THD)Headphone Output6.3 mm JackSupported Impedance16 – 600 Ω   ANALOGUE INPUTSLine Inputs2 × Stereo RCAPhono Input1 × MM Phono RCA   DIGITAL INPUTSCoaxial S/PDIF1 × RCAOptical S/PDIF2 × ToslinkUSBAsynchronous USB-CHDMIeARCBluetoothBluetooth 5.0   BLUETOOTH SPECIFICATIONSVersionBluetooth 5.0CodecsaptX, aptX HDProfileA2DP   OUTPUTSMain Output1 × Variable RCA StereoFixed Output1 × 3.5 mm Line OutputSubwoofer Output1 × RCA Sub OutputTrigger Output12V DC (2.5 mm Jack)   CONTROL & INSTALLATIONRS232 Interface3-Pin Terminal BlockApplicationCustom Installation & System Integration   POWER SUPPLYExternal Power Supply18 V / 500 mA DCMains Compatibility100 – 240 V, 50/60 HzStandby Consumption< 0.5 W   DIMENSIONS & WEIGHTDimensions (W × H × D)206 × 55 × 153 mmDimensions with Connectors206 × 55 × 176 mmWeight1.02 kg (without power supply)