Wake up your sound system with the OPTIM™6 6-Channel Hi-Res Sound Processor with Automatic Sound Tuning Unleash the hidden potential of any sound system with the Alpine OPTIM™6. The OPTIM6 6-channel processor was designed to complement any aftermarket sound system with existing external amplifiers or easily add an external amplifier to a factory or aftermarket sound system. The automatic sound tuning capabilities and Hi-Res Audio playback (96kHz/24Bit) give this product the competitive edge to take any sound system to the next level in performance. The Alpine OPTIM™6 removes all the complexities of tuning a sound system by providing a simple, self-guided process via the OPTIM IOS app (iPhone/iPad) or PC app with the KTX-CSP1 External Mic kit (sold separately) to quickly and precisely measure your vehicle’s interior. This innovative Auto-EQ software analyzes your vehicle’s acoustic environment and intelligently adjusts to optimize the audio output for your vehicle and provide the best possible listening experience. Hi-Res Audio Playback (96kHz/32Bit) Intuitive Realtime Sound Set-Up with 5 Minute Self-Tuning Manual & Automatic Sound Tuning with PC App Control Automatic Sound Tuning with iPhone App Anti-EQ for OEM System (Eliminates Factory EQ Curve) Auto-EQ with APVD Collection (Creates a Flat Vehicle Response) 31-Band Parametric and Graphic EQ Outputs: 6-Channel 4V RCA Digital Inputs: Coax, USB (DAC) Speaker Input: Up to 30V Optional Microphone and AUX Cable (KTX-CSP1) for PC Tuning (Sold Seperately)