Goldhorn DSPA 406 (Previous Demo)
Compact and powerful DSP amplifier with seamless Bluetooth integration, designed for high-quality car audio enhancement.





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Goldhorn DSPA-406
6-Channel DSP Amplifier with 4x65W Class AB Power
Professional digital signal processing meets integrated amplification for superior car audio enhancement.

Product Overview
The Goldhorn DSPA-406 represents the perfect entry point into advanced car audio processing, combining professional DSP capabilities with integrated Class AB amplification in a compact, installer-friendly package.
Advanced DSP
ADAU1450 chip with 31-band parametric EQ per channel
Bluetooth 5.0
aptX HD codec for high-quality wireless streaming
Compact Design
180 x 129 x 36mm form factor for easy installation
Versatile I/O
4 high-level inputs, 6 RCA outputs for expandability
Technical Specifications
Professional-grade components and performance metrics
Core Processing
Amplifier Performance
Connectivity
DSP Processing
Physical Specifications
Software & Features
Key Features & Benefits
Designed for car audio enthusiasts who demand professional-grade processing with user-friendly operation
Advanced Digital Signal Processing
The ADAU1450 DSP chip delivers professional-grade signal processing with 31-band parametric EQ per channel, allowing for precise frequency response tuning. Combined with high-quality PCM1690 DAC and dual PCM1862 ADC chips, the DSPA-406 ensures exceptional audio fidelity throughout the signal chain.
- 31-band parametric EQ per output channel
- Variable crossover slopes from 6dB to 48dB
- Individual channel delay up to 15ms
- Phase control from 0° to 360°


Integrated Class AB Amplification
Four channels of 65W Class AB amplification provide clean, powerful output with minimal distortion. The voltage build-up technology ensures consistent performance even at higher volumes, while the premium NJM4580 and MC33078 op-amps deliver audiophile-grade sound quality.
- 4 x 65W Class AB power output
- THD+Noise less than 0.03%
- Signal-to-noise ratio >100dB
- Voltage build-up technology
Premium Bluetooth Connectivity
Bluetooth 5.0 with aptX HD codec support ensures high-quality wireless streaming from any compatible device. The navigation mix functionality allows GPS and phone audio to blend seamlessly with your music, while maintaining crystal-clear sound quality.
- Bluetooth 5.0 with aptX HD codec
- Navigation mix functionality
- Automatic device pairing
- Low latency streaming

Installation & Compatibility
Designed for easy integration with both factory and aftermarket audio systems
Factory Integration
High-level inputs allow direct connection to factory head units without additional adapters
Compact Form Factor
180 x 129 x 36mm dimensions fit easily under seats or in tight installation spaces
Flexible Connectivity
Multiple input options and 6 RCA outputs provide extensive expansion possibilities
Protection Features
Start-stop ready with EPS error protection system for modern vehicle compatibility
System Configuration Options
Basic Upgrade
Replace factory amplifier with DSP processing for immediate sound quality improvement
Component System
Drive component speakers directly while using RCA outputs for subwoofer amplifier
Full System Control
Use as system processor with RCA outputs feeding multiple external amplifiers
Software & Control Interface
Powerful Windows-based software provides intuitive control over all DSP functions
Windows Software Suite
- Compatible with Windows 8, 10, and 11
- USB-B connection for configuration
- Real-time parameter adjustment
- Graphical EQ and crossover interface
Advanced Control Features
- 8 memory presets for different configurations
- Input mixer for signal blending
- Automatic switching configuration
- Noise gate for analog inputs
Signal Processing Options
Crossover Functions
Butterworth & Bessel filters: 6, 12, 18, 24, 30, 36, 42, 48dB slopes
Linkwitz-Riley: 12, 24, 36dB slopes
EQ Capabilities
Peak, High Shelf, Low Shelf, and All-Pass filter types
Q adjustment from 0.5 to 15 in 0.1 steps
Linking Functions
- Volume linking (absolute or relative)
- EQ linking (relative or absolute)
- Crossover linking with EQ integration
- Frequency response synchronization
About the Goldhorn DSPA-406
The Goldhorn DSPA-406 represents a perfect entry point into professional car audio processing, combining advanced DSP capabilities with integrated Class AB amplification in a remarkably compact package. Designed for enthusiasts who demand superior sound quality without the complexity of separate processors and amplifiers.
At the heart of the DSPA-406 lies the powerful ADAU1450 DSP chip, working in conjunction with premium PCM1690 DAC and dual PCM1862 ADC converters. This combination ensures exceptional signal integrity throughout the entire audio chain, from input processing to final amplification. The integrated NJM4580 and MC33078 op-amps provide the final touch of audiophile-grade analog signal conditioning.
The four-channel Class AB amplifier section delivers 65 watts per channel of clean, powerful output with less than 0.03% THD+Noise. Voltage build-up technology ensures consistent performance even at higher volume levels, while the >100dB signal-to-noise ratio guarantees a pristine listening experience free from background noise or distortion.
Connectivity options are extensive and practical. Four high-level inputs allow direct connection to factory head units, while four RCA inputs accommodate aftermarket sources. The built-in Bluetooth 5.0 with aptX HD codec provides high-quality wireless streaming, complete with navigation mix functionality for seamless integration of GPS and phone audio.
The DSP processing capabilities are truly impressive for a unit in this class. Each output channel features a 31-band parametric EQ with adjustable Q factors, while input channels provide 5-band EQ sections. Crossover functions include multiple filter types with slopes ranging from 6dB to 48dB per octave, and individual channel delays up to 15ms allow for precise time alignment.
Installation is straightforward thanks to the compact 180 x 129 x 36mm dimensions and flexible mounting options. The unit easily fits under seats or in other confined spaces, while the black anodized aluminum construction provides both durability and heat dissipation. Start-stop compatibility and EPS error protection ensure reliable operation in modern vehicles.
The Windows-based configuration software provides intuitive control over all DSP functions, with real-time parameter adjustment and eight memory presets for different listening scenarios. Whether you're upgrading a basic system or building a sophisticated multi-amplifier setup, the DSPA-406 provides the processing power and flexibility to achieve your audio goals.
Warranty & Support
Manufacturer Warranty
Protected by Goldhorn's comprehensive manufacturer warranty coverage
Technical Support
Expert technical assistance for installation and configuration questions
Software Updates
Regular software updates and feature enhancements available for download
No video available for this product.
Product Specifications
Goldhorn DSPA 406 (Previous Demo)