Smart Phone Ohms ?

[timofred]

I have seen headphones vary a lot,
32 all the way to 600 Ohms.

What is the most / least a smart phone can handle ?

My phone is an Oppo A77.

Cheers, Timo.

 

[imral3]

Without having done any laboratory testing, nor listening to a lot of different products, but a little reading on the ol' interwebs coupled with a little experience of my own... to me it seems when you go above 32ish ohms is where you start to see a headphone's performance start to fade, especially in bass impact. This, of course, may also be product dependent. This is referring to full-size, over-ear headphones.

 

[RamblinE]

LG smartphones like the V20, V30, V40, V50, G7, G8, and Q7 have a 32-bit DAC with a high impedance mode. If it senses headphones at 55ohms or higher it increases the gain. The phone says you can go all the way up to 600 ohm but I think 250ohm is a satisfactory enough ceiling for most headphones.

 

[timofred]

Thanks for the replies,
So far, every pair of headphones I've tried have sounded fine, never needing full volume,
You have put my mind at ease.

 

[imral3]

I have Monoprice 8323 - 40 ohms - for portable use with Note 8 - I needed to add a Fiio A3 to give them some oomph! Not more volume, but more bass and mid clarity and punch.