SMSL SU-1 DSP
Digital to Analog Converter with 32-Band PEQ
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Optional pairings. A cable and ear tips are already in the box.
Overview
The details behind SMSL SU-1 DSP.
A New Level of Sound
Building on the exceptional design and outstanding performance of the original SU-1, the SMSL SU-1DSP takes things to the next level with a series of significant upgrades. Featuring advanced 32-band PEQ tuning technology, combined with meticulous acoustic tuning and circuit optimization by our engineers, it delivers a more refined, pure, and immersive listening experience. The SU-1DSP seamlessly blends outstanding audio performance with sophisticated industrial design, offering an exceptional experience that delights both the ears and the eyes.
Precision Tuning & Personalized Sound
Powered by a high-performance DSP core, the SU-1DSP supports precise 32-band PEQ adjustments, allowing you to fine-tune the frequency response to match your headphones, speakers, and listening environment. Easily create a sound profile tailored to your personal preferences. With EQ settings memory, your custom tuning is saved and ready to use whenever you listen. Note that DSP adjustments made via the web interface also apply to the Optical and Coaxial inputs.
High-Resolution Decoding & Precision Clock
Equipped with the latest XMOS XU-316 chip and the AKM AK4493S DAC, the SU-1DSP delivers powerful digital processing capabilities, supporting PCM audio up to 32-bit/768kHz and hardware decoding of DSD512. Complemented by dual high-precision, low-phase-noise femtosecond crystal oscillators, it provides an ultra-low jitter clock source. This precision technology enhances imaging definition and soundstage separation, delivering a spacious and immersive listening experience.
Ultra-Low Distortion & Pristine Background
The SU-1DSP features an optimized circuit layout and meticulous tuning. With total harmonic distortion as low as 0.00013%, it delivers remarkably clean and accurate sound reproduction. A pristine background and an excellent signal-to-noise ratio of 121dB reveal subtle instrumental overtones and delicate sonic textures, bringing every detail of your music to life. It faithfully reproduces the intricate details and dynamic range of studio-quality recordings.
High-Performance Power Filtering
The SU-1DSP features a high-performance power filtering system designed to reduce power-supply noise and interference from connected devices. Its optimized power management enables excellent performance through USB power alone, eliminating the need for an additional external power supply. With a simple plug-and-play design, it helps keep your desktop setup clean and clutter-free while delivering high-quality audio with ease.
Premium Build & Flexible Placement
This model features an anodized CNC-machined aluminum alloy chassis, complemented by an artistically crafted front panel. Blending advanced audio engineering with modern industrial aesthetics, its precision machining creates a premium look and feel. Designed to save space without compromising versatility, the ultra-compact SU-1DSP supports both horizontal and vertical placement to suit different setups, fitting effortlessly into your space.
Technical details
- Product Name
- SMSL SU-1 DSP Digital to Analog Converter
- Inputs
- USB, Optical, Coaxial
- Outputs
- Single-ended line out
- Output Level
- 2.0Vrms
- THD+N
- 0.00013% (-117dB)
- Dynamic Range / SNR
- 121dB
- Supported Formats
- PCM up to 32-bit/768kHz, DSD512
- USB Transmission
- Asynchronous
- USB Compatibility
- Windows / Mac OS / Linux (Driver-free)
- Clock
- Dual high-precision low-phase-noise femtosecond crystal oscillators
- Size
- 96 × 27 × 78 mm (W×H×D)
- Weight:
- 198g
- Note
- Does not support MQA.
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Your order
Which countries do you ship to?
We are generally able to ship to most countries via Express Shipping, and many countries via Standard Shipping. You may clarify this with our team to check whether Standard Shipping is available to your country.
We cannot ship to addresses that are "PO boxes or APO/FPO".
*Note: Generally, we can only do Selected Shipping to India and Russia. We can only do Express Shipping to Africa, Argentina, Hawaii, Kuwait, Mauritius, Montenegro and Sri Lanka, to name a few.
This may be subjected to changes due to unpredictable issues such as Covid, war, and etc.
How much does shipping cost?
We have two shipping methods - Standard Shipping and Express Shipping.
Standard Shipping is free for most countries, while Express Shipping is 15-35USD depending on your country. If your order is over 270USD, Express Shipping is free*.
*This applies for most countries. However, large items such as headphones and desktop DAC/AMPs (e.g. HarmonicDyne G200, MUSICIAN MDP-2, and etc.) are excluded.
Shipping fees exclude import taxes or processing fees that may be applicable for your country. Linsoul is not responsible for such fees. Should you refuse to pay the tax/customs fees, shipping fees will still be deducted from the amount paid for thetwo-way freightcharges. The cost of the freight charges may be more than the amount reflected on your order due to tax and other miscellaneous fees.
Some parcels claimed to be “returned to the seller” may be destroyed by the post office or customs officers when buyers refuse to accept their parcels or fail to pay for their taxes.No refundwill be processed for such cases.Standard Shipping via YunExpress is a tax-inclusive option for some countries. However, Linsoul will not be responsible for additional administrative or handling fees charged by your local courier company or customs. Please kindly check this with your local customs.For certain remote areas, there may be additional charges via Express Shipping. We will contact you if there is a need to make additional payments. Please contact us before placing an order, should you have any queries regarding shipping.
How long does it take to receive the order after it is placed?
For in-stock products, your order will be shipped within 3 working days. You may check with our staff regarding the in-stock status of any products.
Customized items will take a longer time. Please contact our staff for more information.
On normal non-sale days, once your parcel has been shipped out:
- For Standard Shipping, it takes about 2-4 weeks for items to be delivered after shipping out. For some countries, it might take up to 2-3 months, depending on your country, its customs and other factors.* The duration for transit is something beyond our control. Linsoul will not be making refunds for such cases. Please consider an upgrade to Express Shipping or keep the waiting time in mind.
- For Express Shipping, it takes about 3-7 days for items to be delivered after shipping out.
*Note: Timings might be affected due to festive seasons or other unforeseen circumstances
What happens if the parcel has been shipped but not delivered?
First, kindly contact your local courier using the local tracking number.
If your parcel were to be in transit for at least 3 months, it may have been lost in transit.
For orders below $50USD, you may either opt for a one-time reshipment of parcel OR a full refund of the amount paid in cash via PayPal/Credit/Debit card.
For orders above $50USD, we will only process a 50% refund of your order paid in cash via PayPal/Credit/Debit card. Should there be any concern about Standard Shipping, you are encouraged to opt for DHL Express Shipping instead.
Customers are to bear the consequences and fees incurred, if the parcel was undelivered due to any of the following situation:
- Wrong address or phone number provided by recipient
- Recipient was uncontactable when courier company contacted
- Refusal to sign for the package by recipient
- Lost or damaged parcel because recipient opted for “no-signature delivery”
- Refusal to pay for the local tax/processing fee by recipient
- Refusal to provide supporting documents for custom clearance by recipient
Who will pay for the import tax/custom fees
Customers have to bear any form of custom/import/processing fees that are applicable for your parcel.
Should you be unwilling to pay for the fees and reject the delivery of the parcel, you will still have to pay for the shipping cost. Linsoul will only refund the amount of your order after deducting the two-way shipping fees incurred.
What shipping companies do you use?
We collaborate with these courier companies:
- Standard Shipping: 4PX, UBI, NinjaVan, and Yun Express
- Express Shipping: DHL Express, FedEx and SF Express
How do I get help for my order?
Cancellation or/and modification of orders can only be done manually via our staff, provided that our Warehouse Team has not processed your order.
As our Support Team might not be available during non-working days and weekends, please place your order wisely.
Should you really need to cancel or/and modify your order after purchase, please contact us via our support email (Support@Linsoul.com) or website chat. We will help you with the changes if that could be done.
In general, upon receiving your parcel, please confirm the contents of the package and ensure that the package is in good condition before signing for it. All customers are strongly advised to take an unboxing video of their parcel and packaging when opening their parcels and products.
For faulty/missing items, please send an email to support@Linsoul.com for after-sale services. The following details are required.
- Send an email to support@Linsoul.com with an appropriate Subject Title
- Provide your order number and state the issue clearly
- Attach photos and videos to show that your product is faulty/missing. Shipping details on the parcel packaging have to be clearly visible.
If the photos/videos provided are insufficient to prove the stated issue, we will enquire more. Once the issue has been confirmed, we will arrange for a replacement, partial refund or a full refund (where applicable). For incorrect products, Linsoul reserves all rights in deciding whether you need to return the incorrect item or not. Please kindly contact us via email first. Our team aims to review your email within 3 working days.
For other queries, the fastest way to contact us is via our website or Discord
Linsoul Audio will not be responsible for parcels that have been damaged during the transit process.
Do I get tracking details for my order?
After placing an order, you will receive the order confirmation email. After your order has been shipped out, you will also receive a tracking email. You can track your order via the tracking number online. Should you not have received the emails or face any difficulties tracking your order, please kindly contact us for support.
For more than 1 orders placed under the same account and shipping address, Linsoul will automatically combine the orders and ship them out via one tracking number. Should you have special requests to have the orders shipped separately, please kindly contact us via Discord or our website's chat. We will do our best to help.
How do I cancel my order?
Cancellation or/and modification of orders can only be done manually via our staff, provided that our Warehouse Team has not processed your order. Orders that have been shipped cannot be cancelled and modified.
As our Support Team may not be available during non-working days and weekends, please place your order wisely as support cannot be guaranteed for such requests.
Should you really need to cancel or/and modify your order after purchase, please contact us via our support email (support@Linsoul.com) or website chat. We will help you with the changes if that could be done.
Can I return an opened item?
Request a return within 30 days of delivery while the product is factory-sealed. Contact support for instructions before returning anything.
Where should I send the product for the return process?
To initiate the return shipment, kindly send an email to support@Linsoul.com within 30 days upon receiving the sealed product(s). The RMA form and details will be provided to you via email.
When must the product be returned after receiving the RMA form and details?
After receiving the return instructions from us via email, kindly arrange the return shipment of the parcel within 5 working days, and update us with the tracking link via email again. Failure to do so will result in a cancellation of the return process.
When will I receive my refund after returning the product?
In most cases, after receiving and inspecting the returned product, your refund will be processed within 5 business days. Refunds may incur a currency exchange loss or transaction fee, depending on your source of payment (e.g. Bank or PayPal). Linsoul will not be responsible for such fees.
What warranty applies?
Most products come with a 1-year warranty; cables and accessories have shorter or separate terms.
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