SMSL PA400 Gallium Nitride Power Amplifier
SKU: 78975984473

SMSL PA400 Gallium Nitride Power Amplifier

Sale price$249.75 Regular price$277.50
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Description

SMSL PA400 Gallium Nitride Power AmplifierFeatures: >High End Power Amplifier. >Latest Gallium Nitride Power Transistors(GaN). >Works in Stereo as well as Mono Block Modes. >Aerospace Grade Aluminium Alloy Chassis. >XLR and RCA Inputs. >Gold Plated Input and Output Terminals. >Exquisite Design with Ventilated Side Panels. >Top Quality Components. >Overheating and Overcurrent Protection. >Dedicated Audio Switching Power Supply. >Clean Sound Amplification with 0. 003% Ultra Low Distortion.

Features:-

>High-End Power Amplifier.

>Latest Gallium Nitride Power Transistors(GaN).

>Works in Stereo as well as Mono Block Modes.

>Aerospace-Grade Aluminium Alloy Chassis.

>XLR and RCA Inputs.

>Gold-Plated Input and Output Terminals.

>Exquisite Design with Ventilated Side Panels.

>Top-Quality Components.

>Overheating and Overcurrent Protection.

>Dedicated Audio Switching Power Supply.

>Clean Sound Amplification with 0.003% Ultra-Low Distortion.

>Output Power: 250W(Stereo Mode), 500W(Mono Mode).

>Power Consumption: 40W.

>Size: 254x47.7x242mm.

>Weight: Approx 2.58Kg/5.69lbs.

SMSL PA400 is a brand new Class D power amplifier based on the high-performance Gallium-Nitride(GaN) technology. It is designed using high-quality Infineon Gallium Nitride(GaN) transistors. They operate at an ultra-high switching frequency of 1MHz to redefine the sound quality across the entire frequency band. It also features Ti’s flagship PGA2311 volume chipset for precise volume control. SMSL PA400 is designed for audiophiles who seek pristine sonic excellence, immense control, and high-efficiency performance. It packs a solid punch with a rated power of about 250W per channel in stereo mode(4Ω load), and 500W output in mono block mode(8Ω load). Treat your passive speakers with the all-new SMSL PA400 and experience outstanding sound with remarkably low distortion and supreme transient response.

Next-Generation Performance with GaN Transistors:-

SMSL PA400 is a true next-generation Power Amplifier designed for high-performance speakers. It features German Infineon’s GaN FET architecture, which ensures studio-grade sound with unmatched clarity. These GaN Power transistors operate at an ultra-high switching frequency of 1MHz to redefine the sound quality across the entire frequency band.

Pure Power Redefined:-

SMSL PA400 is a supremely powerful device that packs strong output thrust with an ultra-low THD+N of 0.003% and a SNR of 115dB. With the help of Ti PGA2311's precise volume control, the PA400 achieves pure high-fidelity audio with excellent channel separation. With clean and powerful output, the PA400 ensures deep, stable sound performance with excellent imaging and clean, distortion-free output even at high volume levels.

Stereo and Mono Block Operation, High-Power Output Thrust:-

SMSL PA400 can be used in two operating modes: Stereo mode, where it produces 250W per channel output at 4Ω impedance load, or you can use two PA400s stacked together in mono block mode for high-power requiring speakers. In Mono block mode, the PA400 achieves a maximum output power of 500W at an 8Ω impedance load. With such a strong output, low distortion, the PA400 is the perfect companion for your speakers!!

Refined Design, Protected Audio Circuit:-

SMSL has designed the PA400 in a sleek aluminum alloy chassis with gold-plated connectors. It’s not just durable, but also elegant and classy in its design. We also have a custom-developed high-power switching power supply that ensures stable power delivered to each component on the audio circuitry. It has overcurrent and overheat protection that protects the audio circuitry and ensures reliable performance for long listening sessions.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 78975984473

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Burja
San Leandro, US
★★★★★ 4
Good
Size: 89-96158T 2PCS
Good
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Reviewed in the United States on October 26, 2025
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Patrick TTillery
Los Angeles, US
★★★★★ 1
Bad solenoid
Size: 89-96158T 2PCS
One of the cylinders works, and the other cylinder was a bad one. It did not work.
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Reviewed in the United States on August 12, 2025
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Jim M
Omaha, US
★★★★★ 4
Metric Hardware
Size: 89-96158T 1PC
Works fine. This has metric hardware, which does not match the other two relays on my vintage mercury outboard. This is not a quicksilver part
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Jimmy Snow
Carnegie, US
★★★★★ 5
Boat repair
Size: 89-96158T 2PCS
Excellent for price and quality
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Reviewed in the United States on November 1, 2025
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Curtis M
Port Orchard, US
★★★★★ 5
Fixed the no boat start
Size: 89-96158T 1PC
Fixed my problem so far working good
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Reviewed in the United States on August 15, 2025

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