It is made of Beryllium copper. The other shielding is from alluminum.
I compared the 004 with the M1/F1. I was amazed how much more dynamics the M1/F1 had. The shielding is a very important part for the difference. The 004 has a simple shielding of plastic.
When I compare the F1/M1 with the Oyaide I have almost the same outcome. I guess that the shielding is an important part for the reason that the M1/F1 outperforms the Furutech.
The problem is that Oyaide is still difficult to get. These days Purist Audio Design uses Wattgate connectors. Only becauae they had problems to get enough connectors. Audioquest stopped with Oyaide for the same reasons.
But for a perfectionist I am only interested in the F1/M1. For me there is not room for less. That will be a no go. But Jim from Purist Audio always give F. idiots like me the option to get it with Oyaide plugs. That is a nice thing.
I compared the 004 with the M1/F1. I was amazed how much more dynamics the M1/F1 had. The shielding is a very important part for the difference. The 004 has a simple shielding of plastic.
When I compare the F1/M1 with the Oyaide I have almost the same outcome. I guess that the shielding is an important part for the reason that the M1/F1 outperforms the Furutech.
The problem is that Oyaide is still difficult to get. These days Purist Audio Design uses Wattgate connectors. Only becauae they had problems to get enough connectors. Audioquest stopped with Oyaide for the same reasons.
But for a perfectionist I am only interested in the F1/M1. For me there is not room for less. That will be a no go. But Jim from Purist Audio always give F. idiots like me the option to get it with Oyaide plugs. That is a nice thing.