NAKAMICHI NDSR357A

Nakamichi NDSR357A Digital Signal Processor Amplifier. Built for complex, active multi-speaker configurations and high-resolution sound setups, this high-power DSP purifies audio signals from your source unit and corrects acoustic timing and frequency imbalances throughout your vehicle’s interior.

Key Features

• Massive Multi-Channel Power: Internal power amplification producing 6CH × 80W + 4CH × 160W. Channels 1 & 2 support bridging up to 1 × 300W to drive dedicated subwoofers or heavy-duty components.

• Extensive Input & Output Routing: Supports 10-channel high-level (speaker level) inputs, 2-channel low-level RCA inputs, Optical and Coaxial digital inputs, USB music playback, and Bluetooth streaming. Features 12 low-level RCA output channels for full system expansion.

• 31-Band Precision Equalization: Fine-tune frequencies from 20 Hz to 20 kHz on every output channel with 0.1 dB accuracy and adjustable Q-value/slope settings.

• Advanced Crossover & Delay Alignment: Professional-grade filter types (Butterworth, Bessel, Linkwitz-Riley) with slopes ranging from 6 dB/oct to 48 dB/oct. Independent channel time alignment up to 20.000 ms (692 cm) and phase selection ($0^\circ / 180^\circ$).

• PC & Mobile App Tuning: Connect to a Windows PC via USB for deep-level parametric/graphic tuning or sync via Bluetooth for mobile adjustments.

• 6 Preset Slots: Store up to 6 custom audio tuning profiles directly on the device for fast switching.