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SMSL SU-1 Stereo DAC Review

Rate this DAC:

  • 1. Poor (headless panther)

    Votes: 8 1.7%
  • 2. Not terrible (postman panther)

    Votes: 9 2.0%
  • 3. Fine (happy panther)

    Votes: 58 12.6%
  • 4. Great (golfing panther)

    Votes: 384 83.7%

  • Total voters
    459

Loftrocket

Member
Joined
Apr 3, 2024
Messages
16
Likes
5
I look forward to hearing your thoughts on the SU-1. Please feel free to ask any questions you may have.
Oh, be sure i will! :D
First question - is it the point to make some external power connection mod if i'll use it with my android phone? I mean to solder wires directly to pcb... Or is it enough power via usb + data? Or better way to use it with some good wall charger + usb to spdif converter to connect phone?
 
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Toku

Major Contributor
Joined
Apr 4, 2018
Messages
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Location
Japan
Oh, be sure i will! :D
First question - is it the point to make some external power connection mod if i'll use it with my android phone? I mean to solder wires directly to pcb... Or is it enough power via usb + data? Or better way to use it with some good wall charger + usb to spdif converter to connect phone?
The method you showed requires powering the SU-1 from the mobile phone, which quickly drains the mobile phone's battery capacity.
To connect your mobile phone to the SU-1, connect it via a USB hub that can provide external power. A 5V/1A mobile phone charging adapter is sufficient for the external power source.
 

tlr125

Member
Joined
Jan 4, 2022
Messages
39
Likes
14
i'm using SU-1 with UPS, for some reason it doesn't sound good enough from USB-port connected to PC, feels like underpowered or smth
 

Toku

Major Contributor
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Apr 4, 2018
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i'm using SU-1 with UPS, for some reason it doesn't sound good enough from USB-port connected to PC, feels like underpowered or smth
Sorry, what is "smth"?
What kind of model is the PC you connected?
What kind of symptoms do SU-1 occur?
 

strumf666

Member
Joined
Dec 3, 2023
Messages
7
Likes
2
SU-1 uses approx 1.3W under normal use, so it's kind of hard to imagine it could be power starved unless it is connected to an very old or extremely low power device.
Using a UPS to power the SU-1 implies it has been modified, though, so that could have an impact.
 

staticV3

Master Contributor
Joined
Aug 29, 2019
Messages
8,391
Likes
13,573
Using a UPS to power the SU-1 implies it has been modified, though, so that could have an impact.
Not necessarily.

You can buy, or make a USB splitter cable which allows you to power the DAC from an external power supply.

1746155335-268275470.jpg 5c05315df15dc2.22026222.jpg
 

DSJR

Major Contributor
Joined
Jan 27, 2020
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4,663
Location
Suffolk Coastal, UK
I've now just plugged mine into one of the USB3 sockets on the back of the PC after a while from an external USB wall wart and optical feed - can't say I can hear any difference which hopefully confirms supply immunity in the SU1...
 

Bleib

Major Contributor
Joined
May 13, 2021
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Location
Sweden
USB2 or 3, it's not underpowered for me
 

Loftrocket

Member
Joined
Apr 3, 2024
Messages
16
Likes
5
I've ordered DDHiFi usb c power adapter for powering this dac and my phone.
Is there a difference between usb otg cables? I mean in sound quality. I really doubt, but asking anyway. :D
 

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seamon

Member
Joined
Feb 13, 2020
Messages
76
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39
I know, i know. :D
They should made 2 usb sockets, like M3 have.
Completely unnecessary and would have the product worse imo. A single port for power and data is good.
 

seamon

Member
Joined
Feb 13, 2020
Messages
76
Likes
39
I suggest alcohol as an alternative to this power issue.
Listen to the SU-1 sober. Realize you don't like it. Get absolutely hammered. Listen to SU-1 again. Trust me, it will sound better.
 

Toku

Major Contributor
Joined
Apr 4, 2018
Messages
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2,853
Location
Japan
I know, i know. :D
They should made 2 usb sockets, like M3 have.
There are other products that meet your needs, so you should choose one of them.
For me this product is perfect and I don't need the extra USB-C. SU-1 is a product specialized for specific applications.
 
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