This L30 problem is a very rare case that occurs depending on the usage environment, and I think that it is not a problem that occurs for all users.
I think it happens when intense ESD occurs in an environment where the humidity in the room is extremely low.
In my environment, such intense ESD does not occur, so I will continue to use the ones from the current lot.
I had a similar problem with the DX3Pro's headphone amplifier before, after that, then changed the model to DX3 Pro LDAC.
However, as a result the performance of the headphone amplifier has deteriorated.
I used the two DX3 Pros I bought at that time as they were, but no problems occurred.
What changes have been made to this L30 issue? I hope it doesn't affect the sound quality ...
As I always think, Topping's attitude of valuing users is very wonderful.
I think it happens when intense ESD occurs in an environment where the humidity in the room is extremely low.
In my environment, such intense ESD does not occur, so I will continue to use the ones from the current lot.
I had a similar problem with the DX3Pro's headphone amplifier before, after that, then changed the model to DX3 Pro LDAC.
However, as a result the performance of the headphone amplifier has deteriorated.
I used the two DX3 Pros I bought at that time as they were, but no problems occurred.
What changes have been made to this L30 issue? I hope it doesn't affect the sound quality ...
As I always think, Topping's attitude of valuing users is very wonderful.