Nakamichi NDST500A 12-Channel DSP Car Audio Processor Built-In Amplifier Hi-Res For Sale

Nakamichi NDST500A 12-Channel Hi-Res Digital Signal Processor (DSP) with Built-In 10-Channel Amplifier

The Nakamichi NDST500A is a high-performance automotive digital signal processor designed for advanced factory-system integration, aftermarket audio upgrades, and precise vehicle sound tuning. It combines a powerful 12-channel DSP with an integrated 10-channel amplifier, allowing a sophisticated multi-speaker audio system to be built without necessarily requiring separate external amplification for every channel.

The NDST500A supports Hi-Res audio and provides extensive tuning control including a 31-band equalizer, individual channel crossover settings, phase adjustment, time alignment, output gain control, and multiple user presets.

KEY FEATURES:

• 12-channel digital signal processor
• Built-in 10-channel amplifier
• Hi-Res Audio capable
• Bluetooth audio streaming
• Optical digital input
• Coaxial digital input
• High-level speaker inputs for factory/OEM system integration
• RCA low-level connectivity
• 31-band equalizer
• Individual output-channel crossover control
• Adjustable phase and time alignment
• Six programmable sound presets
• Compatible with Nakamichi DSP tuning software
• Designed for OEM/factory or aftermarket head-unit integration
• Remote-control capability

BUILT-IN AMPLIFIER OUTPUT — RMS @ 4 OHMS:

• 4 channels × 25W
• 4 channels × 40W
• 2 channels × 80W

PEAK AMPLIFIER OUTPUT:

• 4 channels × 50W
• 4 channels × 80W
• 2 channels × 160W
• Bridged output up to 1 × 300W

DSP / AUDIO SPECIFICATIONS:

• Dynamic Range, RCA Input: ≥100 dB
• Signal-to-Noise Ratio, RCA Input: ≥90 dB
• Total Harmonic Distortion: ≤0.05%
• Frequency Response: 20 Hz–40 kHz
• High-Level Input Impedance: 240 ohms
• Low-Level Output Impedance: 51 ohms
• RCA Input Signal Range: 7.5 Vpp
• High-Level Input Signal Range: 26 Vpp
• RCA Output Signal Range: 8 Vpp
• Output Gain Range: Mute / -59.9 dB to 0.0 dB

31-BAND EQUALIZER:

• Adjustment range: 20 Hz–20 kHz
• 1 Hz frequency adjustment accuracy
• Q-value range: 0.404–28.85
• Gain adjustment: -12.0 dB to +12.0 dB
• 0.1 dB gain adjustment accuracy

CROSSOVER CONTROL:

Each output channel includes independently adjustable high-pass and low-pass filtering.

• Frequency range: 20 Hz–20 kHz
• 1 Hz adjustment resolution
• Filter types include Linkwitz-Riley, Butterworth and Bessel
• Adjustable crossover slopes from 6 dB/octave through 48 dB/octave
• Crossover filtering can also be switched OFF

TIME ALIGNMENT & PHASE:

Each output channel can be individually adjusted for phase and delay.

• Phase: 0° or 180°
• Delay: 0.000–20.000 ms
• Distance adjustment: 0–692 cm / 0–273 inches

INPUT / OUTPUT CAPABILITY:

• High-level inputs
• Low-level RCA inputs
• Bluetooth digital audio
• Optical digital input
• Coaxial digital input
• 12-channel low-level output capability
• Built-in amplified speaker outputs

The flexible input arrangement makes the NDST500A particularly useful for upgrading modern factory audio systems while retaining the original head unit, as well as for use with compatible aftermarket source units.

POWER & PHYSICAL SPECIFICATIONS:

• Operating Voltage: DC 9V–16V
• Standby Power Consumption: ≤0.1W
• Dimensions: approximately 255 × 175 × 47 mm
• Approximate Gross Weight: 2.08 kg

The NDST500A allows extensive control over the vehicle soundstage, including speaker level balancing, frequency distribution, crossover points, time correction and equalization. Up to six tuning configurations can be stored directly in the processor for quick recall.

Please refer to the photos for the exact unit, accessories, documentation and packaging included with this listing.

Please carefully review all photos before purchasing. You will receive the exact item shown in the pictures, including the item, accessories and packaging as pictured. The photos are considered part of the description and show the exact condition and contents of the item you will receive.