Power that adapters to every listening style

The SMSL PA200 is a power amp built for audiophiles who value power, flexibility, and detail. Buy one to use in stereo mode at 85Wrms per channel at 8Ω, or buy two to use in mono mode and unlock up to 400Wrms at 4Ω—enough power to handle passive speakers with serious demands. Its gallium nitride (GaN) transistor design runs at switching frequencies up to 1MHz, which helps vocals sound a bit clearer and percussion land more crisply. Dual inputs (RCA and XLR) connect easily to different source components, and carefully selected audio-grade components work beneath the hood to deliver stable, transparent playback. 

GaN: a new frontier

Gallium nitride transistors are a newer semiconductor technology that can switch signals at higher speeds and with fewer losses than many traditional silicon components. In practical terms, this means the PA200 can handle signals with more agility and less distortion. By reaching switching frequencies up to 1MHz, it supports tighter control over the audio waveform, helping notes hold their natural shape instead of becoming smeared or dulled. This greater accuracy, combined with the transistor’s ability to run efficiently without excessive heat, allows the amplifier to push challenging speakers without strain. 

Mono mode for a boost in power

With a flip to mono mode, two PA200 units combine to drive speakers with four times the power. This higher output can handle more demanding loudspeakers. 

Peak performance 

With a total harmonic distortion plus noise rating at 0.003% and an SNR above 100dB, the PA200 offers performance numbers that let you sink into the sound. 

Wide bandwidth for full-spectrum sound

From shimmering cymbals to the lowest registers of a thumping bass line, the PA200’s wide frequency response and dynamic range let music come through without it feeling boxed in. 

Product highlights

• Advanced gallium nitride transistor design for refined, stable sound

• Switchable stereo and mono modes for flexible speaker configurations

• Audiophile-grade components and safety circuits

• Low distortion (0.003%) and high SNR (110dB max)

• Gold-plated RCA and XLR inputs

• Wide frequency response and dynamic range

• Comfortable power output that supports challenging speakers

Specs

• Dimensions: 8.66in x 1.81in x 6.89in (220mm x 45.9mm x 175mm)

• Weight: 3.17lbs (1.44kg)

• Inputs: RCA, XLR

• Outputs: Speaker right, speaker left

• Input sensitivity (stereo): 0.68Vrms/22kΩ

• Input sensitivity (mono): 2.1Vrms/22kΩ

• Output power (stereo): 4Ω, 160Wrms x2 | 8Ω, 85Wrms x2

• Output power (mono): 4Ω, 400Wrms x1 | 8Ω, 250Wrms x1

• THD+N: 0.003%

• SNR: 109dB

• Channel separation: 75dB

• Standby power: <0.5W

• Power consumption at normal volume: 40W

What’s included

• PA200 amplifier unit

• AC power cable

• Remote control

• User guide

Apos Promise

• Free Priority Shipping
• Price Match Guarantee
• Apos One-Year Transferable Warranty
• 45-Day Returns