SMSL PA400

$473.90 USD ~~$473.90~~

Free shipping.

Coupon

👈 Get 8% OFF with code 'ATOELITE'

Pairs Well With

30-Day Price Guarantee

Free 30-Day Returns
Ships from our US warehouse (delivered in 3–7 days)
Found a lower price? Let us know and we will match it!

1-Year + 180-Day Warranty

So that you can buy with confidence, we provide a comprehensive warranty on every product.

Warranty Period: This product comes with a 12-month standard warranty.
Extended Warranty: Buy from our official website and you can register directly for the extended warranty, adding a further 180 days of coverage.

For more details, see the [Warranty Policy].

After your purchase, be sure to complete [Product Registration] to activate your warranty.

Free shipping

Free Shipping:
All orders ship free of charge and usually arrive within 7 days.
30-Day Return Guarantee:
If you are not satisfied, you may return or exchange the item within 30 days of delivery.
Shipping Protection (recommended):
For extra peace of mind, we recommend adding Seel Shipping Protection at checkout. With this coverage you can file a claim directly for shipping delays, loss or damage, and receive faster handling and stronger protection.

Please note that if shipping protection is not added, compensation is handled according to the carrier's rules and the applicable conditions. We are always happy to help with logistics inquiries, but the scope of compensation follows the carrier's policy.

For full details, please see the [Shipping Policy] and [Return Policy] pages.

Features

Specifications

Product Specifications	Value
Product Name	SMSL PA400
Model Number	10425586712881
Age Range	5+
Shipping	Free shipping
Delivery Time	1–5 days

Reviews (264)

Customer Reviews

4.92 out of 5 stars

Based on 12 reviews Verified Checkmark

264

See all reviews

Payment & Security

Payment methods

Your payment information is processed securely. We do not store credit card details, nor do we have access to your credit card information.

GaN Technology

The SMSL PA400 GaN Power Amplifier ushers in a new era of sound quality with Gallium Nitride (GaN) transistors, the latest in power amplification technology. Engineered with Infineon’s GaN transistors, the PA400 operates at a cutting-edge 1MHz switching frequency, delivering a sound that is both exquisitely detailed and incredibly pure. With PGA2311, the flagship volume control chip from TI, every note is reproduced with uncompromising precision.

Stereo Balanced Input

When paired with a preamp, the SMSL PA400 achieves an incredibly pure and direct sound, rich in detail. Its stereo balanced input provides an optimized, clean signal pathway, ensuring high input impedance and linear response. In this mode, the amplifier works silently in the background, never overshadowing the preamp but amplifying the musical essence with zero distortion or compromise.

XLR Mono Bridge Mode

For demanding systems, the PA400 can be paired in XLR Mono Bridge Mode to significantly boost power output. By combining two units, the amplifier quadruples its power capacity, effortlessly driving even the most power-hungry speakers. This cooperative mode suppresses background noise while enhancing soundstage depth, width, and resolution. Low frequencies extend deeper, midrange vocals are fuller and warmer, and high frequencies become cleaner and more natural. Perfect for both home theaters and high-end Hi-Fi setups.

Aerospace-Grade Aluminum Construction

Crafted from aerospace-grade aluminum alloy, the PA400 is built for durability and optimal heat dissipation. The robust CNC-milled unibody design, paired with passive cooling features, ensures stable operation under high-demand conditions. The 150-grit sandblasted surface not only improves heat resistance but also delivers a sophisticated look and feel with a smooth, refined texture.

Meticulously Crafted Design

Every detail of the SMSL PA400 is a statement of premium craftsmanship. The precision-engineered knobs and the unibody design reflect the commitment to perfection. This amplifier is as much a work of art as it is a piece of advanced technology.

Premium Components for Premium Sound

Inside, the PA400 is powered by high-quality components sourced from the best suppliers worldwide. These premium materials ensure that the amplifier delivers exceptionally low distortion and abundant energy, providing the cleanest, most powerful sound possible. The entire design is focused on delivering unmatched sound fidelity from source to speaker.

Brand:

SMSL

Category:

AMP & DAC

SKU:

SMSL-PA400

Tags:

New Arrival, Over $500