SMSL A300 Amplifier: Exceptional Audio Quality with Versatile Inputs and Powerful Output

Introducing the S.M.S.L A300 Power Amplifier – an extraordinary audio amplifier that sets new standards in performance and versatility. With its unrivaled precision in volume control and ultra-low distortion, this amplifier showcases the pinnacle of audio excellence. Equipped with a cutting-edge German Infineon digital amplifier chip, it delivers exceptional power efficiency and an immersive listening experience. Crafted with utmost attention to detail, its sleek all-aluminum alloy design exudes elegance while ensuring long-lasting durability.

SMSL A300 Power Amplifier is a state-of-the-art audio amplifier that allows for fine-tuned volume regulation and little distortion. This robust amplifier has an electronic volume control chip manufactured by the Japanese firm NJRC, model NJW1194, which allows for precise and seamless volume adjustments.

S.M.S.L A300 Amplifier

High efficiency and low power consumption are guaranteed by the product use of the latest digital high-power amplifier chip from German semiconductor manufacturer Infineon. This stereo amplifier is great for a broad variety of audio applications since it can be bridged (BTL) into a single-channel amplifier with more power to drive huge speakers.

Its cutting-edge acoustics and treble/bass adjustment make it universally compatible with any set of speakers or genre of music. Wireless audio applications benefit greatly from Bluetooth 5.0’s reception technology due to the higher quality audio and longer range it provides.

To power the main speaker in a 2.1 arrangement without involving the subwoofer, it has a high-pass filter circuit. This makes it an excellent choice for use in domestic, outdoor, and studio AV systems.

The RCA, Bluetooth, and USB inputs on the SMSL A300 provide high-quality sound with a THD+N of 0.004% and an SNR of 103dB. Its high pass mode cutoff frequency is just 50 Hz, and its channel separation is 85 dB. The amplifier’s 280 mV input sensitivity and 22 k impedance provide it a wide range of use.

Feel the mighty 165Wx2 or 85Wx2 of output power in stereo mode, or the mighty 330Wx1  in BTL mode. Its 40W power consumption at typical loudness is very low given its capabilities. This item is the perfect option for those who value portability without sacrificing sound quality.

Using anodizing technology and a chamfering process, the tiny amplifier shell of the SMSL A300 is crafted with exquisite craftsmanship and a delicate touch via CNC precision processing. This not only increases the amplifier’s longevity, but also makes it appear excellent in any room.

Overheating and overcurrent protection circuits of the product are both flawless, guaranteeing the amplifier’s continued safety and functionality even under extreme situations. It comes with a 12-month guarantee that allows buyers to get their money back or a new one if anything goes wrong.

Product Parameters:

Input port:

  • BT, RCA, USB


  • 0.004%


  • 103dB

Channel separation:

  • 85dB

Cutoff frequency:

  • 50Hz

Input Sensitivity:

  • 280mV

Input Impedance:

  • 22kΩ

Output Power (Stereo) for SMSL A300:

  • 4Ω: 165Wx2
  • 8Ω: 85Wx2

Output Power (BTL):

  • 4~8Ω: 330Wx1

Power consumption:

  • 40W


  • 210.5 x 41 x 198mm (WxHxD)


  • 2.86Lbs

SMSL A300 Review

This product is a very powerful and flexible audio amplifier with many potential uses. The patented sound and treble/bass adjustment, along with the built-in high-pass filter circuit and electronic volume control chip from the Japanese NJRC company and the new digital high-power amplifier chip from the German Infineon make it a great option for home theaters, outdoor sound systems, and studios.

The tiny amplifier contains an innovative protection circuit and a case constructed from aircraft-grade aluminum alloy that has been CNC precision machined for durability and beauty. In addition, the SMSL A300 comes with a 12-month guarantee, so you can buy it with complete peace of mind and concentrate on the excellent sound quality.

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