Hello
I recently purchased a second hand WA6, it is my first tube amp, I noticed that it had a bit of a hum coming through the headphones, its mostly only noticeable when my playlist has finished, its still there when playing music but I have to really try and hear it to notice it.
With the stock tubes the hum is louder, when I switch to the second set of tubes the seller was using ( RCA - 13DE7 x2, Philips GZ34/5AR4 - rectifier) it reduced the hum a noticeable amount, I think it was only the rectifier that caused the change in the hum volume.
When I use the Ohm switch at the back it changes the hum sound noticeably ~ the hum present when I'm using the 100-600 Ohm switch is maybe 2-3x louder than when I'm using the 8-100ohm switch.
If I take the WA6 to other power sockets(which have nothing else attached) in the house and only plug the AMP in with a pair of headphones the hum is present so assumedly its not caused by the source chain.
I have tried out some tech to see if they would help.
All from the Ifi brand
The Hum Changes depending on what headphone I'm using
Focal Clear OG = the hum is very noticeable.
Hifiman Edition XS = Somewhat Noticeable but nowhere near as loud as the Clears.
ZMF Eikon = Slightly more noticeable than the XS.
DCA Aeon 2 Noire = Gotta listen and try to hear it to notice it.
I've tried 3 different Power cables in case one was faulty
I'm using my PC to feed my Mojo 2 which feeds the WA6
The Mojo 2 was using USB to the PC but the WA6 was picking up some weird interference from inside the PC so I switched to Optical and it stopped this.
The seller said they didn't notice a Hum but if there was one it was barely noticeable.
~~
I've seen some reviews call the WA6 dead silent, so I'm wondering if anyone has things I can try/advice please? or do I just have to get used to it?
I recently purchased a second hand WA6, it is my first tube amp, I noticed that it had a bit of a hum coming through the headphones, its mostly only noticeable when my playlist has finished, its still there when playing music but I have to really try and hear it to notice it.
With the stock tubes the hum is louder, when I switch to the second set of tubes the seller was using ( RCA - 13DE7 x2, Philips GZ34/5AR4 - rectifier) it reduced the hum a noticeable amount, I think it was only the rectifier that caused the change in the hum volume.
When I use the Ohm switch at the back it changes the hum sound noticeably ~ the hum present when I'm using the 100-600 Ohm switch is maybe 2-3x louder than when I'm using the 8-100ohm switch.
If I take the WA6 to other power sockets(which have nothing else attached) in the house and only plug the AMP in with a pair of headphones the hum is present so assumedly its not caused by the source chain.
I have tried out some tech to see if they would help.
All from the Ifi brand
- DC Blocker
- GND Defender
- AC iPurifier
- Groundhog+
- PowerShield VoltGuard AVR 1500VA (UPS) - all this did was create more hum if it was too close
The Hum Changes depending on what headphone I'm using
Focal Clear OG = the hum is very noticeable.
Hifiman Edition XS = Somewhat Noticeable but nowhere near as loud as the Clears.
ZMF Eikon = Slightly more noticeable than the XS.
DCA Aeon 2 Noire = Gotta listen and try to hear it to notice it.
I've tried 3 different Power cables in case one was faulty
I'm using my PC to feed my Mojo 2 which feeds the WA6
The Mojo 2 was using USB to the PC but the WA6 was picking up some weird interference from inside the PC so I switched to Optical and it stopped this.
The seller said they didn't notice a Hum but if there was one it was barely noticeable.
~~
I've seen some reviews call the WA6 dead silent, so I'm wondering if anyone has things I can try/advice please? or do I just have to get used to it?
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