Hertz H8 DSP (includes DRC HE Remote) is a high-end OEM integration + DSP processor built to interface with factory head units and premium OEM audio systems, then deliver a fully tunable, high-performance signal to aftermarket amplifiers. With 7 signal inputs and 8 processed preamp outputs, the H8 DSP is engineered for complex multi-channel systems where staging, imaging, clarity, and bass control depend on proper summing, de-EQ, crossover management, and time alignment. It accepts four high-level (speaker) inputs that also accommodate low-level preamp signals, plus a stereo AUX input and a digital optical S/PDIF input supporting up to 96 kHz / 24-bit. The optical path helps avoid noise and interference while bypassing analog A/D conversion stages for a cleaner signal foundation when you have a compatible digital source. Key Performance Features OEM integration + DSP processor designed for factory and aftermarket sources 7 total inputs: 4-channel Master (speaker-level / preamp), stereo AUX, optical digital (S/PDIF) Optical digital input supports up to 96 kHz / 24-bit for high-resolution signal transfer 8 PRE OUT (RCA) outputs for multi-amp active builds (front/rear/center/sub routing) Configuration Wizard helps automatically sum filtered OEM channels (e.g., woofer + tweeter), flatten OEM EQ curves, and reconstruct center/rear/sub channels from stereo input Per-channel processing on each output: EQ, crossover, phase, time delay Includes DRC HE remote for in-cabin control of volume, sub level, balance/fader, input selection, and preset switching Input / Output Architecture Inputs (7): 4-channel Master (Speaker In / Pre In), 2-channel AUX (Pre In), Optical S/PDIF (max 96 kHz / 24-bit) Outputs (8): 8-channel low-level PRE OUT (RCA), configurable channel assignment for active front stage + rear + center + sub PC Connection: USB (Type B) for tuning, setup, and saving configurations Remote Control: DRC HE for audio controls + memory/input selection without a laptop Tuning Capabilities Equalization: 31-band ISO 1/3-octave graphic EQ on each of the 8 outputs (±12 dB, 20 Hz – 20 kHz) Crossovers (8 total): one per output channel with Full / HP / LP / Band-Pass modes Filter Types / Slopes: Linkwitz-Riley 12 / 24 dB; Butterworth 6 / 12 / 18 / 24 dB Crossover Frequency: 68-step adjustment across 20 Hz – 20 kHz Phase Control: 0° – 180° Time Alignment: 0 – 15 ms delay with coarse and fine adjustment for precise staging Preset Storage: two tuning configurations selectable via DRC HE (Memory A / Memory B) OEM Integration Notes Built to interface with OEM radios and OEM amplified systems using high-level signal inputs Designed to help correct factory EQ and filtered channel outputs so aftermarket amps/speakers can be tuned properly Wizard-driven setup supports summing multi-way OEM channels into a full-bandwidth signal for clean DSP tuning Optical input option can reduce noise and signal degradation compared to analog paths when a digital source is available Buyer Use Cases Adding real DSP control to a factory head unit without replacing the radio Building an active front stage (2-way/3-way) with correct crossover points and time alignment Flattening OEM EQ and summing factory multi-way outputs for a clean tuning baseline Multi-amp systems needing 8 channels of processed RCA outputs (front/rear/center/sub) Systems requiring quick in-cabin control and preset switching via the included DRC HE remote Technical Specifications THD (1 kHz, 1V RMS output): 0.005% Bandwidth (-3 dB): 10 Hz – 22 kHz S/N Ratio (A-weighted): Digital 105 dBA | Master 95 dBA | AUX 96 dBA Channel Separation (1 kHz): 85 dB Input Sensitivity (Speaker In / Pre In): 2 – 15 V RMS Input Sensitivity (AUX In): 0.6 – 5 V RMS Input Impedance: Speaker In 5 Ω | Pre In 2.2 kΩ | AUX 15 kΩ Max Output Level (RMS @ 0.1% THD): 4 V RMS Operating Voltage: 10.8 – 14.4 VDC (Supply range 7.5 – 15 VDC) Remote OUT: 12 VDC (130 mA) What’s Included (1) Hertz H8 DSP processor (1) DRC HE remote controller Documentation and included accessories as supplied by the manufacturer Why Buy From MCOR Automotive OEM integration & DSP tuning specialists Build guidance: channel mapping, amp matching, and tuning strategy support Fast fulfillment with real install-world knowledge High-end 12V system design experience (SQ + performance builds) Fitment, Installation & Warranty Notes Fitment Help: Need help confirming fitment, compatibility, amplifier matching, or installation parts? Use our Fit Guide or contact us through the chat button before ordering. Authorized Retailer: MCOR Automotive is an authorized Hertz retailer. Products purchased from MCOR include applicable manufacturer warranty coverage when installed and used according to manufacturer guidelines.
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