AC or DC coupling in headphone amp

[Mnyb]

Hello forum I have an Violelectric HPA V90 .

You can have this headphone amps input DC coupled or AC coupled , its a dip switch on the inside the cut of frequency is 12Hz . (default is AC )

What would you use and why ?

My reasoning is that protection from DC is good my DAC is probably DC coupled I have a Topping D70 . DC can come from the recordings themself or some audio mishap on the computer.

But is the implementation any good , any one else using Violelectric/Lake People products with some insight to offer.

 

[Speedskater]

If the source is AC coupled then the amp can be DC coupled.
If the source is DC coupled then the amp must be AC coupled.

 

[Mnyb]

I have to investigate the source then .

Funny that not many other headphone amps are AC coupled. I think many have systems that are DC coupled trough the whole chain ?

Suppose Lake People is doing a lot of studio equipment where people are listening to raw signals and know the need.

 

[egellings]

I agree with Speedskater's answer.

 

[dougi]

What about it's output? It may be AC coupled or have DC protection. If so there is no risk to the headphones but perhaps some to the unit itself.