---
title: "ampnode4 Panel Ports and 70V 100V Limiter LEDs – nnounce"
slug: "features-ampnode4"
description: "Speaker terminals for 70V, 100V Hi-Z or Low-Z, balanced inputs, GPIO, limiter switch and status LEDs."
updated: 2025-03-13T09:47:56Z
published: 2025-03-13T09:47:56Z
canonical: "docs.simpleway.cloud/features-ampnode4"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.simpleway.cloud/llms.txt
> Use this file to discover all available pages before exploring further.

# Features

DescriptionFront and rear panel descprition of control leds, ports and connectors.

---

| **A.** **Front panel** The front panel has 3 control LEDs: 1. status 2. network 3. signal | ![](https://cdn.document360.io/a3e67867-6316-451b-94ad-ec727ac9102a/Images/Documentation/image-1699968520913.png) |
| --- | --- |
| **B.** **Rear panel** Description from left to right. 1. Power connector IEC C14 100-240 VAC @ 50-60 Hz 2. Speaker terminals (70/100V Hi-Z, Low-Z) 3. Balanced audio IN4 and IN3 4. USB-C 5. Control LEDs 6. Limiter Switch 7. Jack input 8. Balanced audio IN2 and IN1 9. GPIO - Control inputs/output 10. LAN A with PoE 11. LAN B with PoE **Note:** The two LAN switches allow simultaneous connection to the audio and control networks, or the second LAN can be used for a redundant network. | ![](https://cdn.document360.io/a3e67867-6316-451b-94ad-ec727ac9102a/Images/Documentation/image-1699968594729.png) Control LEDs on the left-side from the LAN: - status - network - signal - 70V / 100V - switched |

**Product sticker** on device bottom contains MAC address required for device pairing.

## Control LEDs

Front panel and rear panel LEDs are aligned, the description below is valid for both.

| **Status** | Device status: - Red LED light indicates booting of the device. - Yellow LED light indicates that the operating system successfully booted and services are starting. - Green LED light indicates all services are up and running. |
| --- | --- |
| **Network** | Network connection availability check: - LED light is off, no network connection. - Blue LED light when auto mode active and no IP obtained from DHCP. Device available only through IPv6 link local. - Green LED light when at least one active interface is available with correct IP address. NOTE: The indicator is not available until all services are in operation. |
| **Signal** | Green LED lights up if DSP and the design are running. NOTE: The indicator is not available until all services are in operation or the DSP design is empty or missing. |
| **70V /100V** | Green LED lights up according to limiter setting match: - Limiter setting is 70V, LED for 70V lights up, - Limiter setting is 100V, LED for 100V lights up, - Limiter setting is 25V then both LEDs light up 70V and 100V. NOTE: The indicator is not available until all services are in operation. |
| **Switched** | Reserved for future use. |