[ken6217]

Your defect is unique.

I'm waiting for you to dwell back into the Abyss. Glad you're happy with VC. Still one of my favorites. I like monkeypod the most. Drooling over the Macassar.

But it'd be lovely to have your amp running as functionally designed.

The African Blackwood hits hard like the Abyss (obviously not the same). I didn’t find this the same as the Sapele.

Well after having the Abyss two times, I’m now just in the Head Fi abyss.

I’ll try a couple of suggestions that the dealer made, but I’m philosophically against that as I shouldn’t have to put a Band-Aid on a problem that’s inherent with a component.

 

[paradoxper]

The African Blackwood hits hard like the Abyss (obviously not the same). I didn’t find this the same as the Sapele.

Well after having the Abyss two times, I’m now just in the Head Fi abyss.

I’ll try a couple of suggestions that the dealer made, but I’m philosophically against that as I shouldn’t have to put a Band-Aid on a problem that’s inherent with a component.

I can see the appeal for the harder woods.

Don't blink, don't stare.

If you can establish a temporary solution, you can identify the origin. It's very possible you have, say, a defective transformer or failed regulation, it's also very possible you have a ground fault and power variability isn't so cut and dry.

 

[ken6217]

Well since there are others here with the same issue, I think it points to the amp. I never had this issue with any other tube amp. Also why would I hear it on the VC and not on a lower impedance ? Why would it be louder using XLR than using 4.4 mm? If the problem is external to the amp, then I should hear it all of the time with all headphones and connections.

With regards to the electrical side in my home. I ran 10 gauge Romex from the outlet to the panel and then a 20 amp breaker. The amp is the only item on the circuit. Every tube amp on this circuit has been dead quiet except for a slight hum externally from the transformers of the AR REF 75Se, which AR said was normal.

 

[paradoxper]

Well since there are others here with the same issue, I think it points to the amp. I never had this issue with any other tube amp. Also why would I hear it on the VC and not on a lower impedance ? Why would it be louder using XLR than using 4.4 mm? If the problem is external to the amp, then I should hear it all of the time with all headphones and connections.

With regards to the electrical side in my home. I ran 10 gauge Romex from the outlet to the panel and then a 20 amp breaker. The amp is the only item on the circuit. Every tube amp on this circuit has been dead quiet except for a slight hum externally from the transformers of the AR REF 75Se, which AR said was normal.

I'm unsure about the other user's circumstance.
You'd naturally pick up pollution more easily with the VC as it's the most sensitive. It's also why with Primavera, etc tube amps and former
1266 noise was not a consideration. At all.

It's easy enough to eliminate ground fault being cause and work back.

 

[linziyi]

Well since there are others here with the same issue, I think it points to the amp. I never had this issue with any other tube amp. Also why would I hear it on the VC and not on a lower impedance ? Why would it be louder using XLR than using 4.4 mm? If the problem is external to the amp, then I should hear it all of the time with all headphones and connections.

With regards to the electrical side in my home. I ran 10 gauge Romex from the outlet to the panel and then a 20 amp breaker. The amp is the only item on the circuit. Every tube amp on this circuit has been dead quiet except for a slight hum externally from the transformers of the AR REF 75Se, which AR said was normal.

Is this similar to what you are hearing?

https://voca.ro/1et7cYEA6XAP

This was recorded from my headphone by putting the mic close to the earcup. It’s about 120Hz

 

[linziyi]

I'm unsure about the other user's circumstance.
You'd naturally pick up pollution more easily with the VC as it's the most sensitive. It's also why with Primavera, etc tube amps and former
1266 noise was not a consideration. At all.

It's easy enough to eliminate ground fault being cause and work back.

What would be an easy way to eliminate ground fault?

 

[paradoxper]

What would be an easy way to eliminate ground fault?

Any of the aforementioned isolators will work fine.

 

[ken6217]

Is this similar to what you are hearing?

https://voca.ro/1et7cYEA6XAP

This was recorded from my headphone by putting the mic close to the earcup. It’s about 120Hz

I can’t tell as it’s not loud enough.

 

[ken6217]

I ordered the IFI isolator and also a power strip that the dealer recommended me to try. It kind of pisses me off using a power strip as I do not like them nor do I like power conditioners.

 

[linziyi]

I ordered the IFI isolator and also a power strip that the dealer recommended me to try. It kind of pisses me off using a power strip as I do not like them nor do I like power conditioners.

Which power strip did your dealer recommend?

 

[ken6217]

Monster HTS power strip.

His quote:
Ive used these VS very expensive power stuff and nothing cuts out the noise like these - I dont know why. Especially for tube amps.

 

[linziyi]

Monster HTS power strip.

His quote:
Ive used these VS very expensive power stuff and nothing cuts out the noise like these - I dont know why. Especially for tube amps.

When is your power strip coming in? I am super eager to hear if that reduce the noise at all!

 

[ken6217]

To me, taking out noise can't be selective. I wonder what else it takes away that you don't want taken away?

 

[ken6217]

To me, taking out noise can't be selective. I wonder what else it takes away that you don't want taken away?

It says between Friday and Monday. I wouldn't hold my breath. The USPS near me is somewhere between inept and a cluster f uck.

I also ordered the IFI Defender through Amazon and that will be hear tmw. I'll let you know.

 

[ken6217]

Any of the aforementioned isolators will work fine.

The question is, is the hum we are discussing ground fault for certain?