Oh my....what a perfect setupAnother MT-602 update. I knew these were going to be an issue with very efficient headphones and I had a few different idea’s on that. Well today is show time and I am using my Grado’s with this amp, with help.
Today’s chain is Laptop to BF2 to Schiit Loki to Violectric V220 (had to open the case to change a few jumpers), line out to MT-602 and then on to my Grado’s.
Running the V220 at -12Db’s gain via the internal jumpers. Now the MT-602 is on 12:00 and I am running Voshkods. Cool.
First time ever using a pre-amp.
What kind of noise? Did you unplug your headphones from the TA-26 when using it as a Preamp? How long are your RCA cables to your AMP from the TA-26? Are those RCA cables well shielded? Is the noise a hum/or high frequency "hash" - variable not constant?Oh my....what a perfect setup
What about mt 602 as a preamp - do it have any noices??
I want it also as a preamp for my poweramp and speakers but for ex. TA 26 give a huge level of noise in speakers when i tried to use it as a preamp
I had to use the V220 as the pre-amp to get around the very high gain that the MT-602 has. With efficient headphones, it needs the help.Oh my....what a perfect setup
What about mt 602 as a preamp - do it have any noices??
I want it also as a preamp for my poweramp and speakers but for ex. TA 26 give a huge level of noise in speakers when i tried to use it as a preamp
Hello!✌What kind of noise? Did you unplug your headphones from the TA-26 when using it as a Preamp? How long are your RCA cables to your AMP from the TA-26? Are those RCA cables well shielded? Is the noise a hum/or high frequency "hash" - variable not constant?
I had problems with my Topping A90 RCA output, and I had to find cables with a Quad Shield design - floating shield at destination (RCA shield), and that got rid of the noise for me.
Before that I tamed the ground loop noise by upgrading my power strips on consolodating the power to the connected chain of devices and that remove that noise source.
Later I bought a Ravpower Battery powered Pure Sine Wave power source to run my Topping A90 / D90 - and that wasn't connected in any way to the local ground - such small battery sources don't have ground connections when running disconnected from charging power - and this one has a charger that is also ungrounded. That change took away more noise and increased the black silent backgroud.
What also can help is using XLR connections, with a similarly Quad Shielded floating shield at destination (XLR cable shield), which the D90/A90 support.
IDK if getting RCA to XLR converter at the TA-26 end, and self-powered speaker / pre/integrated amp with XLR input might also help reduce the noise.
It took me a while to work all this out with my set up, so please hang in there an keep trying solutions
I looked up the cables, translated, I see the In-Akustik has a ground wire - are you connected it? The Cordial cable is XLR to RCA?
I think that the noice cuz of PC - when i open any game it make the noise louderWhat kind of noise? Did you unplug your headphones from the TA-26 when using it as a Preamp? How long are your RCA cables to your AMP from the TA-26? Are those RCA cables well shielded? Is the noise a hum/or high frequency "hash" - variable not constant?
I had problems with my Topping A90 RCA output, and I had to find cables with a Quad Shield design - floating shield at destination (RCA shield), and that got rid of the noise for me.
Before that I tamed the ground loop noise by upgrading my power strips on consolodating the power to the connected chain of devices and that remove that noise source.
Later I bought a Ravpower Battery powered Pure Sine Wave power source to run my Topping A90 / D90 - and that wasn't connected in any way to the local ground - such small battery sources don't have ground connections when running disconnected from charging power - and this one has a charger that is also ungrounded. That change took away more noise and increased the black silent backgroud.
What also can help is using XLR connections, with a similarly Quad Shielded floating shield at destination (XLR cable shield), which the D90/A90 support.
IDK if getting RCA to XLR converter at the TA-26 end, and self-powered speaker / pre/integrated amp with XLR input might also help reduce the noise.
It took me a while to work all this out with my set up, so please hang in there an keep trying solutions
No - where to connect ground wire ?I looked up the cables, translated, I see the In-Akustik has a ground wire - are you connected it? The Cordial cable is XLR to RCA?
I haven't hooked up the output of the TA-26 yet myself, so IDK what to expect... I was thinking of getting a Topping PA5 to try.
I did try to "chain" the output of the TA-20 to my Topping A90 - there was no noise, but I didn't enjoy the sound qualities - I'm kinda picky
Besides the noises how does the quality of the TA-26 to AMP 3 sound? Or is it just noise? Maybe try a different power socket for the TA-26/AMP3 - try to break the ground loop - if it is ground loop noise.
Is there AC Hum? Can you please describe the noise(s) you are hearing?
Aha!
No, the ground wire would normally only be used for Phono - Turntable RCA connections. If you were using the ground wire I would have suggested disconnection and taping it back so the ground wire doesn't touch anything - it can act like an Antenna which can pick up strong RFI/EMI - near by radio stations. I also see the AMP III doesn't have a ground connection option, same for the TA-26.
Aha!
If you can find somewhere to purchase one of these:
iFi iDefender+
https://ifi-audio.com/products/idefender-plus/
Topping HS01 USB 2.0 High Speed Audio Isolator
https://www.tpdz.net/productinfo/733226.html
The noise is coming from the PC through the 5V lines of your USB cable to the DAC. Both devices isolate or interrupt the 5V line, and both devices allow injection of clean 5V power - through a USB-C connector on the body of their device - to replace the power from the PC. I am using both right now on 2 USB connections out of my PC and both are working to stop the GPU induced / noisy PC noisess that come through that 5v Power lines through the USB.
Here is a video / audio of the PC noise and how the iFi iDefender+ gets rid of it, before and after:
Is that the PC noise you are hearing?
The HS01 also works, this isn't a demo of interrupting the PC GPU noise as the previous one, but it shows a big drop of USB induced noise as well:
Improving DAC Sound Quality: Topping HS01 High-Speed Isolator Review
Unless the equipment has a ground "lug" there is no reason to connect a ground wire, and connecting it can cause problems - noise - induced from the non-shielded ground wire. In some situations you would ground all of your equipment, but that would be a real ground solution, including driving a 3'-6' copper rod into the ground - or tapping into the building ground system - but simply connecting all of your chassis with wire might bring about more noise problems with no ground "sync/drain" to bleed off the excess energy.Thaaanks!!!!
When i use Dacmagic as preamp - there are no any noises
And what about connection of ground wire - where to connect it??
