Atlas Sound TSD-PA252G – 25W x 2 Stereo Two-Channel Power Amplifier

Product Overview

The AtlasIED TSD-PA252G is a compact two-channel power amplifier delivering 25 watts per channel into 4Ω (50 watts bridged mono into 8Ω), designed for AV system integration in commercial distributed audio and background music applications. It accepts balanced Phoenix-style and unbalanced RCA inputs, operates on 24VDC, and includes front-panel gain controls with removable security covers for installer-protected settings. Long-tail search applications include small two-channel power amplifier for AV integration, 25-watt stereo amplifier for commercial background music, and 24V power amplifier for installed AV systems.

Product Description

The TSD-PA252G is a cost-effective stereo power amplifier optimized for installed AV environments where moderate power output and balanced input connectivity are more important than high-power performance. With 25 watts per channel at 4Ω, it can drive a range of passive speakers in small commercial rooms, conference areas, and background music zones without the bulk or power requirements of higher-wattage units. The bridged mono configuration provides 50 watts into 8Ω for applications requiring higher output from a single channel. Two balanced stereo Phoenix-style inputs with a 10kΩ balanced / 5kΩ unbalanced input impedance accommodate line-level outputs from DSP processors, mixers, and source switchers common in integrated AV systems. Dual RCA inputs provide an alternate unbalanced connection path for sources without balanced outputs. Input signal and peak indicator LEDs on the front panel give the installer a clear visual confirmation of signal presence and clipping without requiring a test meter. Front-panel gain controls for left/right or bridged outputs allow final level adjustment at the amplifier location. Removable knob covers allow the installer to lock the gain settings after commissioning, preventing accidental adjustment by end users. THD of 0.2% at 1 kHz and a full 20 Hz–20 kHz frequency response deliver clean, neutral amplification suited to both speech and music. The compact form factor — 1.5" H x 4" W x 5.2" D — fits in tight equipment spaces, millwork enclosures, and AV furniture. The 24VDC power requirement means the amplifier can share a common power supply with other low-voltage AV components in a system. Note: power supply is sold separately.

Key Features

• 25W x 2 @ 4Ω / 50W Bridged @ 8Ω — Dual-channel operation or single-channel bridged mono for flexible zone configuration.
• Balanced Phoenix Inputs — Two balanced stereo inputs (10kΩ balanced / 5kΩ unbalanced) for noise-free long-run connections from DSP and mixers.
• Dual RCA Inputs — Unbalanced input path for consumer sources or devices without balanced outputs.
• Removable Security Covers — Knob covers lock gain settings after commissioning to prevent unauthorized adjustment.
• Input Signal & Peak LEDs — Front-panel indicators confirm signal presence and identify clipping without test equipment.
• 0.2% THD @ 1 kHz — Low distortion ensures clean audio reproduction for both speech and music applications.
• 20 Hz – 20 kHz Frequency Response — Full-bandwidth amplification with no audible roll-off within the audio spectrum.
• 24VDC Operation — Low-voltage power supply compatible with common AV infrastructure power distribution.
• Compact Form Factor — 1.5" H x 4" W x 5.2" D fits in millwork, AV furniture, and tight equipment spaces.
• Energy Efficient Design — Optimized for low standby power consumption in installed commercial environments.

Typical Applications

• Boardroom
• Conference room
• Huddle room
• Commercial meeting space
• Training room
• Multi-purpose room

Technical Specifications

Frequently Asked Questions

Q: Does the TSD-PA252G include a power supply?

A: No. The power supply is sold separately. The amplifier requires a 24VDC, 2000mA power supply.

Q: Can the TSD-PA252G be used in bridged mono mode?

A: Yes. In bridged mono configuration, the amplifier delivers 50 watts into an 8Ω load from a single output channel.

Q: What input connectors does the TSD-PA252G accept?

A: The amplifier provides two balanced stereo Phoenix-style inputs and dual RCA unbalanced inputs, accommodating both professional and consumer source equipment.

Q: What is the purpose of the removable front-panel knob covers?

A: The security covers allow the installer to lock the gain settings after commissioning, preventing accidental or unauthorized level changes by end users in commercial spaces.

Q: What type of loads can the TSD-PA252G drive?

A: In stereo mode, each channel drives a 4Ω load. In bridged mono mode, the combined output drives an 8Ω load. Verify speaker impedance before connecting.

Q: Is this amplifier suitable for background music in a small conference room?

A: Yes. The TSD-PA252G is designed for installed commercial AV applications including background music, conference room audio, and similar distributed audio environments where 25W per channel is sufficient.

Q: What are the physical dimensions of the TSD-PA252G?

A: The unit measures 1.5" H x 4" W x 5.2" D, making it suitable for millwork enclosures, AV furniture, and tight equipment spaces where a full rack-mount unit would not fit.