S.M.S.L - AO300

Desktop DAC & Amplifier

Sale price₹ 24,999 Regular priceMRP: ₹ 29,999
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Color: Black

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Why S.M.S.L is Special


Designed in China

Established & Reputed

Trust us, our reputation in the audio world speaks for itself!

This headphone or gear comes from a well-respected brand known for its high-quality audio equipment, so you can be confident in your purchase.

If you see a product marked as “🎖️ Established & Reputed”, it means you're getting a top-tier device from a brand that's earned its stripes in the audio industry.


A masterpiece from the experts who know audio inside and out!

This headphone or gear is crafted by specialists who know their stuff, ensuring every detail is perfect.

If you see a product marked as “🌟 Specialist”, it means you're choosing a device designed by experts who specialize in creating this specific category of device.


Born in 2009

Why we love this DAC/Amp

Value for Money

Great sound always doesn't have to come with a fancy price tag.

Every once in a while we come across a product that give you a lot more value for the price.

If you see products marked as "🥜 Value For Money" you can be sure you're getting a great bang for your buck.

For Enthusiasts on a Budget

We are here to help you find the best bang for your buck.

This headphone or gear is made for all passionate hobbyists who want top-notch gear without breaking the bank.

If you see a product marked as “🪴 For Enthusiasts on a Budget”, get ready to indulge in your music with high-quality, affordable products that keep your wallet happy and your enthusiasm alive!

Incredibly Popular

Some things deserve all the attention.

This headphone or gear is a crowd favourite, winning over fans everywhere with its undeniable audio quality.

If you see products marked as “🥇 Incredibly Popular”, you’re opting for a tried-and-true choice that’s loved by many, ensuring you're getting something that’s proven to be awesome and widely acclaimed.

For Audiophiles at Home

Cause music hit differently when you are in your own space.

This headphone or gear is perfect for those who demand exceptional sound quality in their personal sanctuary.

If you see products marked as “🏠 For Audiophiles at Home”, get ready to transform your living space into an audiophile's paradise, with rich, immersive sound that makes every listening session a masterpiece.

Use Wirelessly with Bluetooth

Enjoy the convenience of seamless wireless connectivity

This headphone or gear indicates that the product supports wireless connectivity via Bluetooth, freeing you from the tangles of cords and cables.

If you see products marked as “✂️ Use Wirelessly with Bluetooth”, enjoy the freedom to stream music, make calls, and more, all without being tethered to your device, giving you the flexibility to move around and multitask with ease.

Connect With Cable

This device comes with multiple connectivity options. Be sure to check if your source and output support these input and output options.

Built like a Tank

No need to worry about durability.

If you're seeking a headphone or gear with a strong, rugged build, this snapshot indicates that this is the one for you.

If you see a product marked with “🪖 Built like a Tank", it means this product is crafted with metal in its design, ensuring exceptional robustness and durability.

Why it Sounds Amazing

DAC Chip

Know the secret to your pristine audio.

This headphone or gear reveals the secret sauce behind superior audio quality, highlighting the presence of a high-performance DAC chip for pristine sound reproduction.

If you see products marked as “⚙️ DAC Chip”, expect to experience your music with unparalleled clarity, detail, and fidelity, ensuring that every note and nuance is faithfully reproduced for your listening pleasure.

Power Output

When you need that juice to get the best out of your products.

This headphone or gear packs a punch, revealing the product's impressive power output capabilities, ensuring it can handle even the most demanding products with ease.

If you see products marked as “🚀 Power Output”, you're in for a treat with robust performance for driving high-fidelity products without breaking a sweat.

Balanced Output

Upgrading from single-ended to balanced can be the easiest way to improve your sound.

This DAC, Amp or Hi-Res player offers a balanced output, ensuring pristine audio quality with minimised interference and enhanced clarity for your listening pleasure.

If you see a product marked as "⚖️ Balanced Output”, get ready for a symphony of crystal-clear tunes, free from any unwanted noise drama!

Sampling Rate And Bit Depth

Ever wonder how those ones and zeros on your computer magically transform into the rich melodies that fill your room?

The secret lies in a tiny device called a Digital-to-Analog Converter (DAC). Think of it as a translator, taking the digital code of your music and meticulously sculpting it back into a smooth, analog wave that your speakers can understand. But just like a sculptor needs the right tools, achieving audio nirvana with a DAC depends on two key factors: sampling rate and bit depth.

Sampling Rate:

Imagine your favourite song as a complex rollercoaster track. The sampling rate refers to how often the DAC takes measurements of this digital track, measured in kHz (kilohertz) or thousands of times per second. A higher sampling rate, like 96 kHz, is like taking a ton of pictures of the track, capturing every twist and turn with incredible detail. Lower rates, like the standard 44.1 kHz used in CDs, are like taking snapshots at a theme park – fun, but you might miss some of the subtler details that make the ride truly exhilarating.

Bit Depth:

Now, think about the sculptor's tools. Bit depth refers to the precision of each measurement the DAC takes. Imagine the number of colours available to the sculptor. With higher bit depth (e.g., 24 bits compared to 16 bits), each measurement can capture a wider range of values. This allows the DAC to recreate subtler variations in the sound wave, resulting in richer and more nuanced audio. It's like having a broader colour palette for building a more detailed and lifelike sculpture of the sound.


SMSL has introduced its latest desktop DAC and Amplifier, the AO300, which boasts an array of advanced capabilities and premium components. The AO300 incorporates the Cirrus Logic CS43131 DAC chip, ensuring high-quality audio performance while keeping power consumption to a minimum, making it suitable for a wide variety of headphones. It provides support for PCM formats up to 32Bit/768kHz and DSD formats up to DSD256, enabling pristine audio playback. This cutting-edge DAC chipset empowers the AO300 to deliver exceptional audio quality, characterised by its distortion-free and noise-free attributes, resulting in a clean and transparent sound output.



The SMSL AO300 is a robust DAC and Amplifier featuring the powerful Infineon Technologies MA5332MS amplifier chipset, ensuring a potent and distortion-free power output. This Class D stereo amplifier chip, the MA5332MS, empowers the AO300 to deliver an impressive power output of up to 2x 165W at 4Ω and 2x 85W at 8Ω, making it suitable for a wide range of speaker types. Whether amplifying headphones with low or high impedance, it delivers undistorted and remarkable power. Additionally, the SMSL AO300 incorporates the NJW1194 chip to provide high-quality, low-noise audio output, flexible input options, and precise volume control, enhancing its overall audio performance.



The SMSL AO300 incorporates state-of-the-art Bluetooth technology for seamless wireless Hi-Res audio transmission. It is equipped with the XMOS XU-316 chip to manage USB connections, supporting PCM audio up to 32-bit/768 kHz and DSD audio up to DSD256. The Bluetooth connectivity offers compatibility with multiple formats, including AAC, SBC, LDAC, aptX, and aptX HD. The AO300 ensures dependable and swift Bluetooth connections that can accommodate high bitrates, ideal for transmitting high-resolution audio.



The SMSL AO300 is a versatile device that combines a decoder, headphone amplifier, and power amplifier, allowing it to perform various functions depending on the connection method used. It can serve as a decoder and amplifier by connecting to source devices via USB, Bluetooth, Optical, Coaxial, or HDMI ARC inputs and linking to a subwoofer through the SW output, or passive speakers via the speaker output. Alternatively, it can function as a decoder and headphone amplifier when connected to source devices through USB, Bluetooth, Optical, Coaxial, or HDMI ARC inputs and headphones via the 6.35mm or 4.4mm headphone output. Additionally, it can work as a standalone amplifier by connecting to your device's RCA outputs using the AUX input, connecting to a subwoofer via the SW output, or driving passive speakers through the speaker output, making it a highly versatile and adaptable audio device.



Streamline your home audio configuration with HDMI (ARC) audio return support, simplifying connections with just one HDMI cable that links the SMSL AO300 to your TV, improving audio quality and convenience. This 2.1 HiFi system incorporates speaker and subwoofer outputs to deliver a bass-rich audio experience. MQA-CD support ensures audio detail and dynamic range preservation while compressing studio-quality audio. Full MQA decoding is supported via the USB input, while the optical and coaxial inputs allow MQA-CD file decoding, resulting in natural sound quality. Additionally, it comes with a high-quality remote control for convenient and comprehensive operation. The SMSL AO300's EQ mode, along with treble and bass adjustment capabilities, allows you to modify the audio signal's frequency response, enabling personalised sound quality adjustments that match your preferences and speaker characteristics, thereby enhancing your listening experience.

1 Year Warranty

Don't sweat it, this S.M.S.L - AO300 comes with a 1 Year warranty from S.M.S.L that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about S.M.S.L's warranty in India.

Unveiling Cutting-Edge Audio Technology

Established in 2009, Foshan ShuangMuSanLin Technology Co. Ltd. is based in Shenzhen, China. S.M.S.L specializes in audio equipment including DACs, stereo headphone amplifiers, and power amplifiers. With an in-house R&D, manufacturing, and marketing team, S.M.S.L has built an extensive sales network covering 33 cities in China. Additionally, S.M.S.L has developed strategic partnerships with several countries, including Japan, Britain, Germany, Portugal, and Singapore. Their products are exported to over 30 countries worldwide and have garnered high customer satisfaction.

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Audiophile Heaven

"The speaker amplifier is powerful and controlled, the headphone amplifier is clean, warm and smooth, while the DAC is super clean and has low distortion, actually sounding better than the AUX input."

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