Hertz H8 DSP-DRC High Performance 8 Channel Digital Interface Processor

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)