When I hook it up to play there is music for a second or two and then no music for a second or two. This repeats itself over and over again. Ideas?

I do not have that problem with this device, HOWEVER, I do have that very same problem with another SMSL dac ( M500 MKII), and I have not been able to figure out why this happens. I do not use Windows, and I only play wav files with Linux based software, and Linux operating system. Make your own conclusions.

how come the output voltage is so low when I connect it to the optical on my TV? I thought the output was suppose to be 2 Vrms.

only tried whit coaxial in rca out

Without a separate power input, how much faster does the battery drain on the cell phone?

It consumes very low energy. I don't use it via USB. I haven't tested it.

I'd like to listen to one of those new MQA-encoded CDs. Will the optical output of my legacy CD player pass the MQA-encoded signal to this SMSL?

Yes, because the SMSL is reading, converting the signal and your legacy CD player is functioning as a transport only.

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S.M.S.L SU-1 MQA MQA-CD Audio Decoder AK4493S XU316 768kHz/32Bit DSD512 Hi-Res DAC

Product ID: 523773336

Details

Brand
Fanmusic
Interface type
Coaxial USB
Mounting type
Wall Mount
Number of channels
2
Number of pins
8

⚡High-res decoding: 768kHz/32Bit PCM & DSD512

🎧AKM AK4493S DAC chip, ultra-low distortion <0.00013%

🔊Supports MQA & MQA-CD for authentic studio sound

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₨74486

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Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎶 Unlock the studio sound everyone’s chasing — don’t just listen, experience it!

COMPACT POWERHOUSE - Sleek copper design with multiple digital inputs fits effortlessly into any modern audiophile setup.
TRUE 3 D SOUNDSTAGE - MQA technology eliminates time blurring, recreating the original studio atmosphere in your listening space.
STUDIO GRADE CLARITY - Experience pristine sound with AKM's latest AK4493S DAC chip, delivering distortion below 0.00013%.
UNIVERSAL COMPATIBILITY - Plug & play with Windows, Mac, Linux, Android, and iOS—driver support included for hassle-free setup.
SEAMLESS MQA CD PLAYBACK - Decode MQA-CDs directly via optical or coaxial inputs for verified high-res audio authenticity.

The S.M.S.L SU-1 is a high-resolution DAC featuring the cutting-edge AKM AK4493S chip, supporting MQA and MQA-CD decoding to deliver authentic studio-quality audio. It handles PCM up to 768kHz/32Bit and DSD512, ensuring ultra-clear, distortion-free sound. Compatible across major OS platforms with USB, optical, and coaxial inputs, this compact, copper-bodied unit transforms your digital music into a rich, immersive 3D soundstage, making it a must-have for discerning audiophiles seeking premium sound without premium prices.

Specifications

ASIN	B0C1Y7C9HH
Best Sellers Rank	9,943 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 30 in Digital-Analog Converters
Brand	Fanmusic
Compatible Devices	Personal Computer
Country Of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (1,658)
Included Components	no
Interface	Coaxial, Optical, USB
Item Dimensions L x W	9.6L x 7.8W centimetres
Item Weight	195 Grams
Manufacturer	S.M.S.L
Manufacturer Part Number	SU-1
Material	Copper
Model Number	SU-1
Mounting Type	Wall Mount
Number of Channels	2
Number of Pins	8
Product Warranty	Warranty for non-human damage within one year, repairs after one year at your own expense.
Smart Home Compatibility	Not Smart Home Compatible
Unit Count	1.0 count

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₨74486

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Sri Lanka.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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