Smsl SU1 noises

Hipocrates said:
IF and only if, you are using windows, you need to locate and XML file called XMOSUSBDACCpl.xml, is on program files under XMOS. You can open it with notepad
then and change a hidden setting for the streaming option to visible, and on drivers, program setting change it to always on.

It removes the noises caused for constantly turning on and off. At least on mine did it, and the little thing works all the time since then.
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I am, and I can try that easy enough.

mroboto said:
Did you try another mouse ?
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its a wireless bluetooth keyboard with a touchpad built in. The BT receiver does plug into the USB though. Can' really run a different mouse since I use this as a media center and I dont have anywhere to use one.

mroboto said:
Did you try updating the BIOS, Drivers ?
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it says everything is up to date. I'm not inclined to install any third party software to manage any of that.

mroboto said:
The only thing that can help is to replace it for a newer with better chipsets etc.
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Not spending money on a new computer. If this can't be made to behave in a relatively low effort and low cost manner I'll just go back to using analog sources.
 
gadget73 said:
it says everything is up to date. I'm not inclined to install any third party software to manage any of that.
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I use in on my own computers, and friends, family, or people in need for computer help, The only annoying things is the invites to install another IOBit software , you can skip, uncheck, and Don't click on Install button Twice (During installation its for another software, wait...)

And the Windows Scheduled tasks it add

But followed by Autoruns as I wrote > Scheduled Tasks > IOBit > Disable or Delete (Anything useless that came from third party software).

It's not necessary to update drivers each week when the system is stable, but when problems or weird things happens, that may help simply.

It may find more than 15 obsolete drivers on your system, and Free Version updates 15 drivers only.

But they often offers Free Giveaway keys for the Pro version that effectively works for limited time.
 
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Hipocrates said:
I can't tell very well from your description, but there's a bug on some of those models.

IF and only if, you are using windows, you need to locate and XML file called XMOSUSBDACCpl.xml, is on program files under XMOS. You can open it with notepad
then and change a hidden setting for the streaming option to visible, and on drivers, program setting change it to always on.

It removes the noises caused for constantly turning on and off. At least on mine did it, and the little thing works all the time since then.
Click to expand...
doesn't seem to be that.

I think its just dirty power. I set it to SPDIF input and it makes the same noises as when set to USB, so that implies the garbage is coming in on the power lines rather than the data. I guess I'll try a cable with ferrite beads first, and if that doesn't do it, I'll get the other gizmo that converts it to SPDIF and power this with a stand-alone power supply.
 
gadget73 said:
doesn't seem to be that.

I think its just dirty power. I set it to SPDIF input and it makes the same noises as when set to USB, so that implies the garbage is coming in on the power lines rather than the data. I guess I'll try a cable with ferrite beads first, and if that doesn't do it, I'll get the other gizmo that converts it to SPDIF and power this with a stand-alone power supply.
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Good to know
 
Good shielding will likely help. I got a 15 foot StarTech brand USB cable (USB 2.0, A male connector to C male connector) and it was a big improvement over the active cable.
 
I don't think I was wrong investing in a 1300W power supply, a new rig for my source (Computer) when I only use 200 Watts for tube amplifier to power up speakers :)

Good luck.
 
Its a Dell, they have odd proprietary nonsense parts. Power supply upgrades really aren't an option. Also doesn't really make sense spending money on a nearly 10 year old business model that I got for free.
 
I said 1300W, for a personnal PC may be overkill to some, but the power supply have headroom when temporary current outrage, enough that my TRC Shock Shield disengage current to the amp, but the computer on another line continue to run as if nothing happens.

For your main digital source for media etc, build your own PC from scratch, a decent power supply and case are the base to build on.
 
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that costs money, or I could trash pick things for free and keep something out of the landfill. If my cheapness and environmental responsibility line up, I consider that a bonus.
 
gadget73 said:
doesn't seem to be that.

I think its just dirty power. I set it to SPDIF input and it makes the same noises as when set to USB, so that implies the garbage is coming in on the power lines rather than the data. I guess I'll try a cable with ferrite beads first, and if that doesn't do it, I'll get the other gizmo that converts it to SPDIF and power this with a stand-alone power supply.
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Have you tried an oscilloscope to monitor the mains power?
gadget73 said:
Its a Dell, they have odd proprietary nonsense parts. Power supply upgrades really aren't an option. Also doesn't really make sense spending money on a nearly 10 year old business model that I got for free.
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You have the right idea to go with older business class machines. My preference is the upper end HP hardware. Some of the Lenovo stuff is solid as well. Dell would be a tertiary choice. All of my desktop type power supplies are dead, so that would be a point to health check.

Some random thoughts that would cause noise:
Lack of hardware resources. For windows, I use perfmon to look at the CPU, Memory, disk at a quick glance.
A poorly written hardware driver.
A poorly designed hardware data bus. Basically garbage at that point for anything audio.
 
The price makes these a winner. Work buys only Dell stuff, and I get it out of the e-waste pile. I do have a newer one I could possibly swap in here but this machine is the larger format and it has both an optical drive and a bay for a 3.5" drive. I have a 1.5TB storage drive stuck in there for data backups in addition to the SSD boot drive. The replacement machine is one of those compact jobs with just the 2.5" SSD inside. I'd need to either get external enclosures or buy external drives to use with it. I don't do a ton with the optical drive but its currently my only means of watching DVD movies.

Haven't put a scope on it. I just got the cable with the ferrite, no noticeable difference. I did try feeding it from a USB charger, dead silence. No signal input since I don't have anything else to feed it from but its absolutely garbage coming in on the power line from the PC.

Tried both the stock Windows driver and the one thats supposed to be for this DAC, no difference. Also since the same noise comes in whether or not its set to USB for the input I don't think its driver related.

Doesn't seem to be lack of resources. Quick look shows 52% memory used, and under 5% for disk, memory, and CPU.

Poorly designed data bus is certainly possible.

so I guess at this point its SPDIF converter and external power supply so it gets data from the PC without getting power from it.
 
It's possible that you have more than one issue. It would be interesting to temporarily swap in the other machine. I would need to check what I have, but fairly certain that you can purchase a USB y cable that is pinned to take an external supply .

As far as external usb drives, I'm using Sabrent external drive docks. My only gripe is that it will put the disk in sleep mode after a long period.
 
Had a look at the SU1 manual for power requirements at ＜5W where your Dell with USB 2.0 would max. at 2.5W. Hmm...:idea:
 
that might be related too. Hadn't checked the power output capacity.

I've seen those cables that allow for external power supplies, but of course when I went looking for one I couldn't find one that seemed to clearly be for that purpose. I'm sure there is some specific name for it that I don't know, and with the right terminology I'd find it.

the spinning rust drive goes to sleep in this machine, so that really wouldn't be any different than what I get now. There isn't anything critical on there, its basically a backup to all of the schematics and junk stored on my workshop PC, manuals for various things, etc.

In the meantime I ordered the PO-100 and an SPDIF cable since I couldn't find the one I know I have here someplace.
 
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