iBasso D1 internal impedance

[gcompari]

Is anybody there that knows (or measured) the iBasso D1 internal output impedance, or the D1 Damping Factor with a 32 ohm headphone?

gcompari

 

[jirams]

Quote:

Originally Posted by gcompari /img/forum/go_quote.gif Is anybody there that knows (or measured) the iBasso D1 internal output impedance, or the D1 Damping Factor with a 32 ohm headphone? gcompari

Since the o/p of the D1 is buffered then I expect the impedance seen by a load will be virtually zero. Therefore the D1 will have a very high damping factor.

Do you feel knowing this is a of any real value? It is more relevant to loudspakers with their higher mass moving parts than to 'phones.

 

[gcompari]

I think it's very relevant.
You may try to listen your headphone directly connected to speaker out of power amp like Yamaha 497 (110db S/N - 320 damping factor / 8 ohm).
The problem is if D1 has really "vitually zero" out imp and if this out impedance is achieved with global negative feedback or with high current out stage. With the impedance variation of a 32 ohm headphone, if the amp internal impedance is no lower than 1 ohm you can see important frequency response variations.

 

[jirams]

Quote:

Originally Posted by gcompari /img/forum/go_quote.gif I think it's very relevant. You may try to listen your headphone directly connected to speaker out of power amp like Yamaha 497 (110db S/N - 320 damping factor / 8 ohm). The problem is if D1 has really "vitually zero" out imp and if this out impedance is achieved with global negative feedback or with high current out stage. With the impedance variation of a 32 ohm headphone, if the amp internal impedance is no lower than 1 ohm you can see important frequency response variations.

 

[gcompari]

Sorry for my english.
What is so incomprehensible?

gcompari