Beale Street A120 Class D 120W Sub Amplifier

Product Overview

The Beale Street A120 Class D 120W Sub Amplifier is a compact, efficient digital amplifier designed to deliver dedicated power for demanding subwoofer applications. With 120 watts of Class D amplification, the A120 provides the power needed to drive compatible subwoofers while maintaining a cool and efficient operating profile.

The A120 accepts either stereo or mono line-level audio through RCA inputs, allowing it to receive full-band audio from a compatible amplifier, receiver, preamp, or LFE output. This flexible input design makes the amplifier suitable for integrating a dedicated subwoofer into a variety of residential audio systems.

For subwoofer performance optimization, the A120 features an adjustable phase control that allows the subwoofer output to be aligned more effectively with the main speakers based on subwoofer placement. It also provides an adjustable subwoofer crossover frequency, giving installers and users greater control over how low-frequency content is managed.

Additional integration features include stereo speaker-level pass-through using two Phoenix connectors, audio sensing, and a 12/24V DC on/off trigger input through a 3.5mm mini connection. Its compact enclosure measures approximately 5 inches wide and 1.8 inches high, allowing the amplifier to fit into installations where space is limited.

The A120 supports 115V and 230V AC input, making it suitable for a variety of power environments.

Key Features

• 120 watts of Class D amplification
• Compact design for space-constrained installations
• Cool and efficient digital amplifier design
• Stereo or mono RCA line-level audio input
• Compatible with full-band line-level audio and LFE output
• Stereo speaker-level pass-through
• Two Phoenix speaker-level connections
• Adjustable subwoofer crossover frequency
• Adjustable phase control
• Audio sensing capability
• 12/24V DC on/off trigger input
• 3.5mm mini trigger connection
• 115V/230V AC input compatibility
• 4-ohm impedance
• Designed for subwoofer applications
• Direct replacement for Beale Street A100

Subwoofer Performance Control

The Beale Street A120 provides controls designed specifically for subwoofer integration. Its adjustable crossover frequency helps manage the low-frequency portion of the audio signal, while the adjustable phase setting can be used to optimize subwoofer performance relative to the position of the main speakers.

This makes the A120 useful for installations where subwoofer placement and system integration require additional adjustment.

Flexible Audio Connectivity

The A120 features a stereo/mono RCA line-level input, allowing it to accept audio from a range of appropriately equipped devices. It can receive full-band line-level audio from an amplifier, receiver, or preamp, as well as an LFE output where supported.

A stereo speaker-level pass-through is also provided through two Phoenix connections, offering additional flexibility when integrating the amplifier into an existing audio system.

Compact Class D Design

With a compact enclosure measuring approximately 5.00 inches wide, 1.80 inches high, and 4.90 inches deep, the A120 is designed to fit into installations with limited available space. Its Class D digital amplifier architecture provides an efficient solution for dedicated subwoofer amplification.

Technical Specifications

Specification	Details
Brand	Beale Street Audio
Model	A120
Manufacturer Part Number	A120
ADI Part Number	DX-A120
Product Type	Amplifier
Amplifier Class	Class D
Rated Power	120W
Audio Channels	1
Impedance	4 Ohm
Sensitivity	1 dB
Frequency Response	40Hz–160Hz
Total Harmonic Distortion (THD)	0.5%–1%
Operating Power Consumption	150W
Input Voltage	115V AC, 230V AC
Audio Input	Stereo/Mono RCA Line Level
Speaker-Level Pass-Through	Stereo, 2 × Phoenix
Crossover	Adjustable Subwoofer Crossover
Phase	Adjustable
Audio Sensing	Yes
Trigger Input	12/24V DC On/Off
Trigger Connection	3.5mm Mini
Width	5.00 inches
Height	1.80 inches
Depth	4.90 inches
Length	5.70 inches
Replacement For	Beale Street A100
UPC	741835109444
Country of Origin	China*

*Country of origin is subject to change.

Applications

The Beale Street A120 Class D 120W Sub Amplifier is suitable for residential audio installations requiring dedicated subwoofer amplification and flexible system integration.

Potential applications include:

• Residential home audio systems
• Dedicated subwoofer installations
• Home theater systems
• Stereo audio systems
• Custom residential AV installations
• Systems requiring compact amplification
• Installations using RCA line-level or LFE audio sources

Connectivity

The A120 provides multiple connection options for flexible installation:

RCA Line-Level Input: Accepts stereo or mono line-level audio from compatible audio equipment.

Phoenix Speaker-Level Pass-Through: Provides stereo speaker-level pass-through using two Phoenix connections.

12/24V DC Trigger: Supports external on/off control through a 3.5mm mini trigger input.

Audio Sensing: Allows the amplifier to respond to an audio signal for system integration.

What’s Included

• 1 × Beale Street A120 Class D 120W Amplifier

Product Benefits

The Beale Street A120 Sub Amplifier combines 120W of Class D amplification with adjustable crossover and phase controls in a compact enclosure. Its stereo/mono RCA input, speaker-level pass-through, audio sensing, and 12/24V trigger input provide multiple options for integrating a dedicated subwoofer into a residential audio system.

As a replacement for the A100, the A120 provides an updated compact amplification solution for compatible Beale Street Audio installations.