Nexo NANONXAMP4 4 Channel Amplifier

nanoNXAMP4-D 4-channel power amplifier with Dante

The Dante-enabled nanoNXAMP4-D 4-channel amplifier delivers 4 x 250 watts via highly reliable Class-D power amplifiers with extremely low distortion and a switched-mode power supply (SMPS) with active power factor correction (PFC). This allows it to achieve the same sound quality and characteristic sound profile as NEXO's larger NXAMPMK2 TD controllers. Integrated signal processing utilizes FIR filters for precise equalizer settings and linear phase coherence. Pre-configured presets are available for a select range of loudspeakers from NEXO's popular ID and ePS series.

An integrated mixer and flexible matrix functions further reduce the costs of smaller installations. Setup and remote control are conveniently handled via an integrated web interface, accessible via Ethernet or the integrated Wi-Fi network.

Key features

• Speaker controller with Dante interface and four amplifier channels in a 1U, half 19' rack
• Four analog inputs (balanced + unbalanced) – suitable for line or microphone level –, SPDIF digital input/output, and four Dante or AES67 inputs (only on nanoNXAMP4-D)
• Four Class-D amplifier channels with extremely low distortion for uncompromising sound quality, 4 x 250 watts at 4 ohms
• Universal power supply (100–240 V) with PFC technology for maximum efficiency and consistent power consumption
• Remote control possible via integrated WLAN access point or Ethernet connection

Flexible, scalable and economical

The nanoNXAMP4 4-channel amplifier is available in both standard and Dante versions. It combines power and signal processing in a single device, significantly reducing the overall cost of small to medium-sized sound reinforcement systems. Perfectly matched to loudspeakers in the NEXO ID and ePS series.

Typical NEXO sound in a compact form

Despite its small size, the nanoNXAMP4 delivers first-class audio quality with 4 x 250 watts of Class-D amplification and minimal distortion. Integrated FIR filtering ensures precise equalizer settings and phase-accurate reproduction. A selection of pre-configured presets guarantees optimal performance for compatible NEXO speaker models.

Highly customizable and intuitively controllable

Thanks to the integrated mixer and matrix functions, even smaller installations can be implemented without additional hardware. Optional wall-mounted control panels allow for easy source selection and volume control directly on site.

Easy setup via web interface

System configuration and remote control are conveniently performed via an integrated, browser-based user interface accessible via Ethernet or Wi-Fi. Inputs, zones, routing, speaker presets, delays, and system information, among other things, can be managed intuitively here.

Compatible with external control solutions

The nanoNXAMP4 can be easily integrated into existing networks and supports both NEXO's own NeMo control system and common third-party protocols for remote control and system monitoring.

Space-saving design

With a footprint of just one rack unit and half the rack width, the nanoNXAMP4 maximizes channel density and saves valuable rack space. The integrated 4x In / 4x Out DSP architecture with optional Dante interface eliminates the need for additional signal processors – reducing not only hardware costs but also cabling effort.

Technical data

Number of amplifier channels: 4, bridgeable in pairs (2x2)

Maximum output power:

• 4 channel mode / 8 ohms: 4 × 200 watts
• 4 channel mode / 4 ohms: 4 × 250 watts
• 4 channel mode / 2 ohms: 4 × 250 watts
• 2-channel mode (bridged) / 8 ohms: 2 × 200 watts
• 2-channel mode (bridged) / 4 ohms: 2 × 350 watts

Power consumption:

• Idle: 20 watts
• Standby: < 2 watts
• Standby without network connection: < 0.5 watts

Signal processing / Input and output specifications

• Frequency response: +0/-0.25 dB from 20 Hz to 20 kHz
• Input impedance / Input sensitivity: 20 kOhm / +13 dBU
• Dynamic range / THD+N: >106 dB (A-weighted) / <0.05% (with flat DSP configuration)
• Latency: 1 ms (with flat DSP configuration)
• A/D & D/A converter: 24 bit at 48 kHz
• DSP processing: 64-bit

Rear connections:

Analog audio inputs:

• 4 × symmetrical (Euroblock, 3.5 mm grid)
• alternatively unbalanced (Cinch/RCA)
• Output to loudspeakers: 4 × Euroblock outputs (5 mm pitch)

Digital audio connections:

• 1 × SPDIF 2-channel input/output (RCA)
• 1 × Dante™ 4-channel input (nanoNXAMP4-D only)

GPIO port:

• 1 × Euroblock (3.5 mm grid) with
• 4 × global inputs
• 1 × global output
• Network: 1 × Ethernet port (100 Mbit/s) for remote control
• Power connection: 1 × IEC C14 socket

Front panel & remote control:

• Status indicators: 5 LEDs (WiFi / Network / Output / Input / Status)

Remote control:

• via Ethernet port (100 Mbit/s)
• or via integrated WLAN access point / WLAN client

Power supply:

• Mains voltage: Universal power supply with active PFC, 100–240 V (50/60 Hz)
• Power consumption at 1/8 load (4 ohms): 250 watts

Dimensions & Certifications:

• Dimensions: 1U, half a 19" rack width
• 44.5 × 220 × 296 mm (H × W × D)
• Weight: 2.8 kg
• Electrical safety:
• IEC62368-1 (2nd edition)
• UL62368-1
• EMC certifications:
• FCC Part 15 Class B
• CAN/CSA-CISPR 22-10
• EN55032/CISPR32, EN61000