FX DAC-X6 audio issues

[Andrew279cz]

Hey guys,

my new FX Audio DAC-X6 finally arrived. But I have this issue.

 

There is a strong crackling/noise sound that is very noticeable in everything. From Windows sounds to YT videos and games.

I noticed some very cheap headphones have this same issue, with certain frequencies being completly out of range.

 

Headphones: Sennheiser HD 598SR (sound perfectly fine with my onboard mobo audio (X299 Dark))

Read about Audio Jumpers and high/low impedance headphones, but I want to consult you first before opening it up and loosing the ability to RMA.

 

[rice guru]

Low impedance headphones won't sound good with them as they can be quite sensitive to noise and such. The dac x6 has a output impedance of about 10 ohms so you generally want something above 80 or to be safe a 100 ohms as you generally want your output impedance/ headphone Impedance ratio to be 1/8or 1/10 this is particularly true with iems and dynamic driver based headphones. With plants it is a bit different.

[Andrew279cz]

1 minute ago, rice guru said:

Low impedance headphones won't sound good with them as they can be quite sensitive to noise and such. The dac x6 has a output impedance of about 10 ohms so you generally want something above 80 or to be safe a 100 ohms as you generally want your output impedance/ headphone Impedance ratio to be 1/8or 1/10

So, should changing the jumper to low impedance help or will it stay the same?
Did I waste almost $80?

[rice guru]

Just now, Andrew279cz said:

So, should changing the jumper to low impedance help or will it stay the same?
Did I waste almost $80?

It might change. But it could also be an issue only way to find out really is to plug a high ish impedance headphone into it. If you can I would return it and buy something more suited to lower impedance gear. IMO the only reason to buy the dac x6 these days is if you want to drive a 250 ohm Beyer for cheaply 

[Andrew279cz]

Will try the jumper, give me a few minutes,

 

These? They are so goddamn cheap.

https://europe.beyerdynamic.com/dt-990-pro.html

 

 

[Andrew279cz]

39 minutes ago, rice guru said:

It might change. But it could also be an issue only way to find out really is to plug a high ish impedance headphone into it. If you can I would return it and buy something more suited to lower impedance gear. IMO the only reason to buy the dac x6 these days is if you want to drive a 250 ohm Beyer for cheaply 

Switched position of jumpers (stock position was both furthest from headphone jack). No difference, only slightly louder.

 

So I guess the DAC goes on the shelf, waiting for something with more impedance. 

 

Back to using adapters to 3,5mm......

[rice guru]

 

 

1 hour ago, Andrew279cz said:

Will try the jumper, give me a few minutes,

 

These? They are so goddamn cheap.

https://europe.beyerdynamic.com/dt-990-pro.html

 

 

yeah that or the 250 ohm dt 770 if you want a closed back price dont matter much I personally prefer the 990 or 770 over 598SR anyway.

[thevirq]

It's not your headphones. It's the unit from a defective batch. No fix found yet. Return it if you can.