S.M.S.L - SU-1

Desktop Digital To Analog Converter (DAC)

Sale price₹ 7,699 Regular priceMRP: ₹ 7,999

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7 Day Replacement Guarantee

In case you receive the S.M.S.L - SU-1 with a manufacturing defect, please raise a return request within 7 days of delivery.

However, if you receive an incorrect / damaged / different product or one with missing accessories, please raise a return request within 24 hours of delivery. In case you receive a product with a missing, incorrect, or faulty accessory, you will be given a replacement accessory instead of the entire product.

Please make sure that the product is in the original packaging with all the accessories it came with. We'll also need an unboxing video and images of the parcel to investigate about the discrepancy. You may be asked to share images of the product and the packaging received for us to determine the damage or defect prior to approving the return request. The free replacement will be shipped only once the original order is returned.

A replacement will be issued only if:

- It is found to be defective
- It is determined that the product was not damaged while in your possession
- The product is not different from what was shipped to you
- The product is returned in original condition (with brand’s/manufacturer's box, MRP tag intact, user manual, warranty card and all the accessories therein)


The S.M.S.L - SU-1 is eligible for Easy Exchange within 7 days of delivery. Your exchange request will be accepted only once. We want to make sure that you end up with a product that you 100% love.

An exchange will be allowed only if the product is returned in original condition (with brand’s/manufacturer's box, MRP tag intact, user manual, warranty card and all the accessories therein)

You will receive full Store Credit in your Headphone Zone account so that you may choose another product from our website which would be more suited to your needs. Refunds will NOT be possible under our 7 Day Easy Exchange Policy.

Warranty & Services

Don't sweat it, this S.M.S.L - SU-1 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.

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1 Year of

Ideal for Audiophiles

These DAC & Amps are designed for discerning music lovers. If audio quality is important to you, a set of DAC & Amps like these would be ideal.

You can expect these DAC & Amps to present you with a refined listening experience. The audio quality exhibited by these DAC & Amps is a beautiful mix of musicality, technical brilliance and high precision.

These DAC & Amps deliver a spacious & open soundstage that makes you feel you are sitting at a live concert. Experience the magic and delve into pure sonic tranquility!

Ideal for
Desktop Use

DAC Chip

Pair with Laptop via USB

A majority of people use a laptop as the primary source device to listen to music or watch movies. Since the laptop is an essential part of the audio chain there are headphones and devices designed to work a laptop or computer system flawlessly. With the availability of USB connectivity, it becomes easier to pair various devices like an Amp, DAC or even headphones without worrying about drivers or any additional piece of software.

Connect With USB
Optical & Coaxial



The All-New S.M.S.L SU-1 MQA Audio DAC is a compact yet powerful digital-to-analog converter (DAC) that delivers exceptional audio quality, MQA technology, and a wide range of connectivity options for an immersive listening experience. The S.M.S.L SU-1 is a desktop DAC designed for high-resolution audio, featuring built-in MQA decoding support. It incorporates the latest AK4493S DAC chipset from AKM and utilises the XMOS XU-316 USB processor for precise decoding of high-resolution audio signals. With its support for Hi-Res PCM, DSD, and MQA audio signals, the SU-1 enables you to enjoy a diverse range of music formats. Whether you choose to connect via USB, optical, or coaxial, the SU-1 ensures seamless MQA decoding. Upgrade your audio setup today with the S.M.S.L SU-1 and immerse yourself in a rich and authentic sound experience.



To deliver a luxurious sound experience characterised by smoothness and richness, the SU-1 from S.M.S.L is equipped with AK4493S, the latest DAC chipset from AKM. This advanced chipset enables precise and high-quality decoding of high-resolution audio signals, resulting in an exceptionally low distortion performance of less than 0.00013%. The SU-1 also features the XMOS XU-316, a third-generation 16-core chip, working in conjunction with the AK4493S decoding chip to achieve outstanding audio fidelity. With this powerful combination, the SU-1 can handle PCM signals up to 32-bit/768kHz and DSD512, ensuring exceptional audio reproduction.



The S.M.S.L SU-1 stands out as one of the most cost-effective desktop DACs available today that supports Master Quality Authenticated (MQA) technology. MQA is a cutting-edge technology that enables high-resolution audio to be compressed into smaller file sizes, making it convenient for storage and streaming. With its MQA and MQA-CD decoding support, the S.M.S.L SU-1 ensures that you can fully unlock and enjoy the exceptional audio quality of MQA files. This makes it an excellent choice for audiophiles who seek true-to-life sound reproduction. The SU-1 offers versatile connectivity options, allowing you to connect it to various sources such as CD players, televisions, and USB devices. It features three input options, including USB, optical, and coaxial ports. Moreover, the SU-1 is compatible with a wide range of devices, including Windows, macOS, Linux, Android, and iOS devices, making it highly versatile and user-friendly.



The S.M.S.L SU-1 showcases exceptional craftsmanship, as evidenced by its meticulous design and construction. It features a robust housing made from high-quality aluminium alloy, crafted using advanced CNC machining techniques, anodizing technology, and precise chamfering processes. This not only ensures its durability but also promotes effective heat dissipation. With its premium textured finish, the SU-1 exudes a sense of sophistication. Its compact design makes it an ideal choice for those who desire a high-quality DAC without occupying excessive space.

1 Year Warranty

Don't sweat it, this S.M.S.L - SU-1 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.

Explore Collection

"Considering its input flexibility, clean implementation of the AKAK4493S dac, and good dynamics, this could be a perfect upgrade or starter DAC for audiophiles assembling their first desktop audio stack."

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"SU-1 in my opinion is well built, sounds good when paired with a good amp, depending on your preference. For the price and the features that come alongside with SU-1, I think it is a no-brainer and easy recommendation."

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"The SMSL SU-1 is a quite compact and highly capable desktop type of Digital to Analog Converter that shows good technical capability and just a very low amount of sonic coloration, which makes it to an ideal source for amplifiers."

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Check out the most common questions our customers ask. Still have questions? Talk to our Headphone Gurus.

Our customer support is available Monday to Saturday: 10am-6:30pm.Average answer time: 2-3 hours

Customer Reviews

Based on 13 reviews
Ashok A (Chennai)
Excellent DAC in this price range

Recommended for who is looking CD quality audio in DAC.
Very enjoyable and smooth sound.

Input via android device is not able to power on this dac.
You must need laptop or computer for USB input.

Thanks to headphonezone.

We really appreciate the genuine feedback, we'll share your thoughts with the brand as well!

V.S. (Chennai)
SMSL SU 1 - My 3 week experience

SU-1 is my first DAC only product, i have tested various dac-amps but none of them are purely DAC. SU-1 in my opinion is well built, sounds good when paired with a good amp, depending on your preference.

For the price and the features that come alongside with SU-1, I think it is a no-brainer and easy recommendation. If SMSL is able to release another model without the MQA rendering, I believe the cost can be brought down a little, with all that being said, i’d still recommend this dac without any doubt!
Listening Impression using Home Theatre 5.1 system set up:

• Bass is presented with good texture, nice and decent sub bass rumble
• Punchy bass with good slams.
• Soundstage is widely spreaded.
• Sounds a little bit more musical overall to my ears when paired with SU-1
• Bass has good controlled and focus to the point - sounds a little fuller.
• Mids are being brought forward a little bit so Zero.
• Treble remains smooth while still being a little energetic.

If you’re interested in getting this unit, head over to Headphonezone’s store and get one now:

Hey there! Thank you for the review and sharing your detailed experience with the SMSL SU-1 DAC. We're delighted to know you found it to be a solid performer in your setup. Just a quick note, we don't have a physical store, but you can easily purchase the SMSL SU-1 directly from our website. Your insights are valuable, and we're glad to hear the positive impressions! Thanks again for recommending it. Cheers!

Customer Philip (Bengaluru)
excellant value for money

I am still in the process of evaluating as I received the unit very recently . The performance is better than expected. I felt that it has an edge over the ifi zen air that i was using earlier in terms of musicality, sharper vocals and highs and cleaner bass. Would prefer some indication of the sampling rates , DSD, using LEDs as in the IFI unit. Yet under evaluation.

Hey Customer, thank you so much for the amazing feedback! It means a lot to us. We are so happy to hear that you are loving our products and services.

Vinu Ramasamy (Chennai)


Hey there, thank you for your awesome ratings!

Jay (Chennai)
Wonderful little gizmo this is !!

I didn't expect too much from it given the rather low-end price but it punches way, way above its weight. I was pleasantly surprised by the details it brought out and the clear separation of instruments. Some reviewers elsewhere suggested that the sound was too bright and mids were too exaggerated. I didn't find that to be the case at all. It sounded quite neutral to my ears. I couldn't be happier with this purchase !!

Hey there,

This makes us really happy and we really appreciate the genuine feedback! Your review will definitely help fellow audiophiles to make an informed decision.

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