Duelund Coherent Audio
to me
show details 2:16 PM (19 hours ago)
Reply
Volleyguy
I think the reason is that most air cores are made in the same way, quickly wound and done. However, the Duelunds are made in the same vein as their caps with a wet oil dielectricum which they are impregnated with under high pressure for several days. Supposedly this reduces unwant resonances in the inductor, which is very beneficial to the sound quality.
As I've said, I never use anything else, but the price difference is of course large compared to the Alpha Core.
The Duelunds are only made by Jensen insofar, that Duelund has access to the Jensen machinery (They are located in the same building) , otherwise they are as night and day especially soundwise, I own both types. The english Audio Notes are no longer made by Jensen, but I believe Kondo Audio Note (Japan) continues to use Jensen. Furthermore, they are no longer paper in oil, but use a plastic material (mylar). I firmly believe in the paper approach, but again each to his own, and Audio Note UK probably had their reasons.
to me
show details 2:16 PM (19 hours ago)
Reply
Volleyguy
I think the reason is that most air cores are made in the same way, quickly wound and done. However, the Duelunds are made in the same vein as their caps with a wet oil dielectricum which they are impregnated with under high pressure for several days. Supposedly this reduces unwant resonances in the inductor, which is very beneficial to the sound quality.
As I've said, I never use anything else, but the price difference is of course large compared to the Alpha Core.
The Duelunds are only made by Jensen insofar, that Duelund has access to the Jensen machinery (They are located in the same building) , otherwise they are as night and day especially soundwise, I own both types. The english Audio Notes are no longer made by Jensen, but I believe Kondo Audio Note (Japan) continues to use Jensen. Furthermore, they are no longer paper in oil, but use a plastic material (mylar). I firmly believe in the paper approach, but again each to his own, and Audio Note UK probably had their reasons.