---
title: "What's the difference between the ATSC1 and Dolby Digital Plus Encoder licenses for the LA-5300?"
slug: "la-5300--difference-between-atsc1-ddplus-license"
tags: ["ATSC 1 License", "Linear Acoustic LA-5300", "LA-5300", "Dolby Digital Plus License"]
updated: 2025-06-05T19:59:52Z
published: 2025-06-05T19:59:52Z
canonical: "docs.telosalliance.com/la-5300--difference-between-atsc1-ddplus-license"
---

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

# What's the difference between the ATSC1 and Dolby Digital Plus Encoder licenses for the LA-5300?

## Scope

This document describes the difference between the **ATSC 1** license and the **Dolby Digital Plus Encoder** license for the Linear Acoustic LA-5300

## Description

In short - there is ***NO*** difference between these two options.

The “ATSC 1” option was renamed to “Dolby Digital Plus Encoder” option since it better reflects the functions enabled by this license. In fact, the Telos Part Number used to order this option remains the same (3002-00087-000).

If you see either “**ATSC1**” or “**DDPLUS**” in the Feature Keys section of the System menu page, you have this option installed

![Feature keys with activation options and instructions for entering codes displayed on screen.](https://cdn.document360.io/57e3cd80-d493-453c-9672-ad1b043dadc3/Images/Documentation/Feature Key Section.png?sv=2026-02-06&spr=https&st=2026-11-12T11%3A14%3A47Z&se=2026-11-12T12%3A14%3A47Z&sr=c&sp=r&sig=n7oxYRGKrMoy1pJAq%2F5dyyabHMJpsbbtD2%2FKa5Arujw%3D)

Feature Keys / License section of the LA-5300 System page

Starting with version 1.0.272a, this option also supports Dolby Digital Plus with Atmos encoding (sometime referred to as “DD+ JOC”). This means the available encoding modes are:

- Dolby Digital 2.0 (2/0)
- Dolby Digital 5.1 (3/2L)
- Dolby Digital Plus 2.0 (2/0)
- Dolby Digital Plus 5.1 (3/2L)
- Dolby Digital Plus with Atmos (5.1.4)

> **Note:** Dolby Digital is the brand name for AC-3; Dolby Digital Plus is the brand name for E-AC-3; Dolby Digital Plus with Atmos is the brand name for DD+ JOC

## Let us know how we can help

If we can be of further assistance please reach out to us directly or click the **Request Support** at the top of this page