Essence Series

NA3

HiFi Wireless Access Point

The NA3 HiFi Wireless Access Point is a network device based on the CelHeart A1 architecture, featuring a fully linear power supply ARM platform where all CPU, network, and I/O components are clocked natively by the unified CelCLK II PLL system. Its wireless section provides 2.4GHz 802.11n 2x2 MIMO access up to 300Mbps — fully satisfying music browsing and control needs. WiFi optimization further enhances both local and networked music playback quality.

Through the CelHeart A1 architecture, the NA3 provides an all-LDO power supply platform comprising 11 linear regulators. This power supply platform natively uses a unified PLL to supply clocks for the network, CPU, and I/O interfaces — providing a foundational architecture purpose-built for HiFi applications. Based on this platform, the NA3 implements wireless access point functionality that helps users further elevate sound quality.

NA3 NA3S

Core Design

Core Design Philosophy

CelHeart A1 Architecture

The CelHeart A1 architecture uses a fully linear power supply design, where all clocks for CPU, network, and I/O are uniformly provided by the CelCLK II PLL system, paired with ARM performance matched to requirements, born for various HiFi applications and the ultimate listening experience

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Clock Design

The NA3 adopts the CelCLK II PLL system with 1Hz lock-in technology, using a 50MHz OCXO as the VCO clock, paired with an ideal SMA input interface to achieve high-precision global clock synchronization

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Main Power Supply System Designed for Digital Playback

Pure digital devices have fundamentally different current and voltage requirements compared to traditional HiFi equipment with analog output stages. To address this, CelAudio has designed an entirely new digital power supply architecture optimized for these demands, delivering exceptional playback performance

Network Topology

AP Module

The AP module provides a 10/100/1000M network interface and two antenna interfaces. It also incorporates the CelCLK II PLL system and supports BNC 10MHz external clock input.

Switch Module

The NA3S extends the NA3 with an additional switch module, providing two dedicated 1000Mbps SFP interfaces and two RJ45 interfaces — all using synchronized clock signals from the CelCLK II PLL system on the AP module.

This module features a special SFP_CTL interface that enables software-controlled power switching, physically disconnecting or connecting the device attached to the SFP_CTL interface — with significant impact on local playback quality. For details, please download the usage scenario documentation or watch the related tutorial videos.

Specifications

Wireless Network	IEEE 802.11n 2x2 MIMO, 300Mbps, 2.4GHz
Clock Input	10MHz, BNC * 1, 0.6V RMS (Sine/Square Wave)
Network	RJ45 * 1, 10/100/1000M Auto-Adaptive Ethernet Interface (NA3)
	RJ45 * 3, 10/100/1000M Auto-Adaptive Ethernet Interface, SFP*2 1000M SGMII/1000BaseX (NA3S)
USB	USB2.0*1, Management Interface, Supports USB Audio
Power	110/220V AC, Fuse 5*20mm, 1A, Slow-Blow
Dimensions (WDH)	360mm * 213mm * 88mm
Weight	4.5Kg

* NA3S AP module and switch module require an external network cable connection

Model	Description
NA3	802.11n 2T2R 300Mbps Max, provides one 10/100/1000M auto-adaptive network interface.
NA3S	802.11n 2T2R 300Mbps Max, provides 3 10/100/1000M auto-adaptive Ethernet interfaces, 2 SFP 1000Mbps interfaces, supports SFP_CTL interface.