Check the listing for details. DS18 DSP4.8BTM DSP Crossover Equalizer 4-Channel Digital Sound Processor. Condition: Certified - Refurbished. Listed at 179.00 USD. DS18 DSP4.8BTM 4-Channel In and 8-Channel Out Digital Sound Processor with Bluetooth and Water Resistant COMES WITH 3 YEAR WARRANTY At DS18, our team of engineers is always working to give users unrestrained control over the unmatched power our products deliver. The DSP4.8BTM, our newest digital sound processor, gives users access to every bit of power in your vehicle’s audio system, allowing you to gain the control needed to handle and achieve the quality of sound you desire.Creating a flawless audio system has never been easier. The DSP4.8BTM gives users access to a list of filtrations settings directly from our BT Interface. This interface also gives users option to save presets for certain songs or genres allowing for the perfect listening experience one hundred percent of the time.The DSP4.8BTM gives you access to a great number of tuning options that can be adjusted using the DSP4.8BTM Application on the App Store or Google Play.HighlightsBluetooth connectivity to allow for easy and accessible audio tuningEasy to use software found on Google Play or the App Store to fine tune and monitor every aspect of your signal processing.4 Channel RCA and/or HI-level speaker inputs8 Channel RCA outputs Parametric equalizer with 8 independent band per channelCrossover with filters: Butterworth, Linkwitz-Riley and Bessel.Great for:Car AudioPro AudioMotor CyclesHome StudioStunt WallsDIY ProjectsROUTING CHANNEL Routing Options A / B / C / D / A+B / A+C / B+CGAIN GAIN / GANANCIAGeneral Gain -53 to 0dB Channel Gain -33 to +9dB FREQUENCY CUTS (CROSSOVER) Cutoff Frequency 20Hz to 20KHz Types of Cuts Linkwitz-Riley / Butter worth / BesselAttenuations 6 / 12 / 18 / 24 / 36 / 48dB/OCTINPUT EQUALIZER (EQ IN) Equalization Bands 15 Bands Gain -12 to +12dB CHANNEL EQUALIZER (EQ CHANNEL) Equalization Bands 8 Parametric per Channel Gain -12 to +12dB Q Factor 0.6 to 9.9 TIME ALIGNMENT (DELAY) Time 0 to 18,95ms Distance 0 to 6500mm LIMITER Threshold -54 to +6dB Attack 1 to 200ms Release 1 to 988ms POLARITY INVERSION (PHASE) Phase 0 or 180º MEMORIES (PRESETS) Memories 3 - 100% ConfigurableINPUT A/B/C/D Input Channels 4Type Electronically Symmetrical Connectors RCAMax Input Level 4,00Vrms (+14dBu)Input Impedance 100KΩOUTPUT Output Channels 8Connectors RCAType Electronically Symmetrical Max Input Level 3,50Vrms (+13dBu)Output Impedance 100Ω DSP Frequency Response 10Hz to 24KHz (-1dB) THD+N