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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4.7 ★★★★★
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C
Verified Purchase
Caitlin Grundeland
Louisville, US
★★★★★ 3
Bigger than expected...
Color: A3 Purple and Black, Color: A3 Purple and Black
I needed a new purse because the one I have currently (that I have that for about 4 years) is falling apart on me, and I wanted a sturdier one. I ordered this one after much thinking and I paid for fast shipping to get it today! I came home from work and was excited to open it... They gave a different color than I ordered, I placed my order for purple and black, and I received gray and black (which I am not too mad about because I like those color combos too) it looked smaller in the photos, but to my discovery it's actually pretty big... The purse is in good condition, but the dangly piece will NOT turn the right way, which kind of erks me. I do like that it comes with a matching wallet though. I think I will try it for a while and see if I like it, even though it seems really bulky. I may return it because I feel deceieved. At least the purse smells good and it's good quality so far. I will come back with an update. **UPDATE** I really tried to use it, it was sturdy and held everything I needed. I think this purse would be for those who like bulky bags. It just wasn't for me. Held up throughout the time I was using it, but with this purse I wouls consider it to each their own. I use the wallet though 😉
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2019
L
Verified Purchase
lynn martinez
Los Angeles, US
★★★★★ 5
Blk mule
Size: 8.5, Color: Black
They really nice. Good looking and feel comfortable. But I believe they run small. I’m an exchange them for a size up.
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Reviewed in the United States on February 2, 2026
C
Verified Purchase
Catherine
Alexandria, US
★★★★★ 5
LOVE THEM ❤️
Size: 9, Color: Hazelnut
LOVE THESE ❤️ COMFORTABLE.. WELL MADE.. BEAUTIFUL 😍
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Reviewed in the United States on March 17, 2026
D
Verified Purchase
d & d
Alexandria, US
★★★★★ 5
Genuine leather upper and well made
Size: 10, Color: Sunlight
These shoes are well made and I love the way they look. They look great with jeans or dresses. I usually wear a 9 1/2 or 10 depending on the brand. These are a size 10 and fit. Hopefully after a breaking in period the opening at the toes will loosen up. Also, when walking they make a slap slap sound. Again, hoping after they break in that won't be the case. I got a great deal and poof a couple of days later there was a slightly better deal. I wasn't sure I'd like the color but it's actually really nice. The upper is genuine leather and they are well made.
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Reviewed in the United States on December 6, 2025
M
Verified Purchase
Mytwocents
Birmingham, US
★★★★★ 5
Beautiful shoe
Size: 7, Color: Smoke Grey
This shoe is fairly narrow, which works fine for my narrow feet. Comfortable. Light. Nice color will match with lots of colors. Fairly comfortable but the skinny part by the toe I see how this would give anyone with a medium side foot blisters. It’s fine on me.
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Reviewed in the United States on August 23, 2025

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