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.