confucius_zero
Addicted to Fun and Learning
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So who here tried it? is it good?
So this is normal with RCA connects? Shouldnt this Show up in the measurements though?Hello and welcome to the 'fun' of ground loops and unbalanced audio!
Hello and thanks for your input. The Loxjie D10 has a separate micro usb for Power if you wanna use optical. I used that and connected the other end to a usb Port on the PC which had the exact same problem.SMSL SP200 has a 3-pin mains power connector. It is grounded to the mains earth.
The Loxjie DAC is connected via USB (+5v, D+, D-, common ground) to your computer, which I am guessing is a desktop or a laptop with 3-pin power supply?
The Loxjie DAC and SMSL amp are connected with unbalanced audio cables (signal, ground/shield).
You now have a ground loop. Mains earth connected at both ends and a ground connection all the way through the USB cable and unbalanced audio cables.
If your source is a laptop on battery or powered by a double-insulated DC power supply, then you wouldn't have a ground loop. Only one connection to the mains ground, despite everything else sharing a ground connection. I think Amir tests with a laptop, and so ground loops aren't an issue for him.
Hang on....you mention you connected via optical on the Loxjie DAC. How did you power the DAC? From a USB battery or DC power brick, or still from a mains connected computer?
I am making some assumptions here. If you list your chain completely and in a detailed way, we may be able to spot an easy solution.
Are you using the amp part too? I was using the dac part only and cant think of a way this guy pulls more then 1 Ampere when other das with same chip and more features only use 1 Ampere. (Topping D50S for example which comes with its own linear power supply at 5v1a)I measured the power consumption from the wall socket with the D10 connected to the two 5V 1A chargers and the triple-slot charger.
With the 5V 1A chargers, the consumption was at an unchanging one watt.
With the triple-slot charger, the consumption mostly stayed at 10.1 watts with peaks at 20.24 watts.
The idle power consumption for the consumption monitor was 1 W and with any of the chargers connected at idle, it did not go higher than this.
EDIT: took a closer look at the triple-slot charger and it says the "up to 3.4A" is for both non-QC slots combined, while the two individual slots are 2.4A. There are 5V and 3A chargers available and I'll probably be trying one of those as well.
Are you using the amp part too? I was using the dac part only and cant think of a way this guy pulls more then 1 Ampere when other das with same chip and more features only use 1 Ampere. (Topping D50S for example which comes with its own linear power supply at 5v1a)
I always pull out the power adapter when not using the Atom. The adapter becomes hot.To my surprise having the headphone amp on/off didn't seem to have an effect on power consumption measured from socket.
However, from some further playing around, I did notice that the my aforementioned power consumption readings stayed the same even if I unplugged the usb power cable from the dac (meaning the usb cable was only connected to the charger and nothing on the other end). The consumption did go down on the three-slot charger if I unplugged the usb cable from that completely.
Also noticed that the power consumption monitor says my JDS Atom amp's PSU consumes 20W just from being plugged in.
I somewhat believe the migraine could be due to the measured ESS Hump of the product that might mess the mids.
...Just compared it with a no hump ESS implementation: the Topping D10. The treble attack was tamed, no migraine...