The SoundTube MA501T is a compact commercial amplifier designed for distributed audio systems using 25V, 70V, or 100V speaker lines. Its Class-D amplifier design provides an efficient solution for installations that require dependable paging, announcements, background music, and general-purpose sound reinforcement.

With microphone, line-level, and balanced input options, the MA501T can accommodate a variety of audio sources without requiring additional equipment for basic system integration. Its compact design also makes it well suited for commercial AV racks and equipment cabinets where space is limited.

The amplifier includes features specifically suited to commercial installations, including priority muting, selectable gain control, and protection against thermal overload and short circuits. Rack-mount brackets are included, making installation straightforward for integrators and AV contractors.

Flexible 25V, 70V, and 100V Operation

The MA501T supports multiple distributed-audio voltage configurations, allowing installers to select the appropriate output format for the speaker system.

With support for 25V, 70V, and 100V operation, the amplifier can be used in a wide range of commercial sound installations, including systems where multiple speakers are distributed throughout a building.

This makes the MA501T a practical choice for applications such as:

• Background music
• Paging systems
• Voice announcements
• Retail audio
• Office sound systems
• Hospitality installations
• Educational facilities
• Public buildings

Efficient Class-D Amplification

The MA501T uses a Class-D amplifier design to provide efficient amplification in a compact chassis. The efficient topology helps reduce heat generation compared with traditional amplifier designs while providing consistent performance during extended operation.

For commercial installations where equipment may operate for long periods, efficient amplification can help simplify thermal management within an equipment rack or AV cabinet.

Multiple Audio Inputs

The MA501T provides flexible input connections for different types of audio sources.

Input options include:

• Microphone input
• Line-level input
• Balanced audio connections

This allows the amplifier to accommodate common commercial audio sources such as microphones, mixers, paging equipment, and other line-level devices.

Priority Muting for Paging

Priority muting makes the MA501T particularly useful for systems that combine background music with announcements.

When a priority source is activated, the amplifier can mute lower-priority audio so that important announcements can be heard clearly. This is useful for paging and notification systems in environments where announcements need to take precedence over background music.

Protection for Commercial Installations

The MA501T includes protection features designed to help safeguard the amplifier during demanding operating conditions.

Protection includes:

• Thermal protection
• Overload protection
• Short-circuit protection

These features help provide dependable operation and reduce the risk of damage caused by abnormal system conditions.

Rack-Mount Installation

Rack-mount brackets are included with the MA501T, allowing the amplifier to be installed in a standard equipment rack or AV cabinet.

Its compact form factor makes it a practical option for installations where rack space is limited while still requiring a dedicated commercial amplifier.

Ideal Applications

The SoundTube MA501T is well suited for a variety of commercial and institutional audio systems, including:

• Retail stores
• Restaurants and hospitality facilities
• Corporate offices
• Schools and educational facilities
• Public buildings
• Paging systems
• Background music systems
• Commercial distributed audio
• General-purpose PA systems

Key Features

• Commercial low-voltage audio amplifier
• Supports 25V, 70V, and 100V distributed speaker systems
• Efficient Class-D amplifier design
• Microphone, line, and balanced inputs
• Priority muting for paging applications
• Selectable gain control
• Thermal protection
• Overload protection
• Short-circuit protection
• Compact installation-friendly design
• Rack-mount brackets included

SoundTube MA501T Technical Specifications