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WoodenSporkAudio t1_ixfuou6 wrote

Reply to comment by icanseeyourpantsuu in 100Ω output impedance by icanseeyourpantsuu

The really low Output Impedance amp devices can be suited for a wider range of even lower impedance cans too…. Sometimes even IEMs if the amp has a low noise floor. Low impedance and medium impedance options.

Lots of power into low and high impedance… voltage on one end and current on the other to make the power rating with the impedance (resistance)

These can vary by amp how much voltage and current they have driving various impedance loads hi and low.

You can use pretty much any pair of headphones with any amp that have less than the 8:1 ratio (headphones to amp) … some will give good results and some will give bad.

Oratory1990 even talked about how a less than 8:1 ratio can be ok to a certain extent with certain headphones and the amp pairing that isn’t 0.1ohm OI. Or 1 or whatever.

Certain lower voltage and therefore power amps with or without high output impedance can be great with the right headphones. It just depends on the system and you and what you are listening to.

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icanseeyourpantsuu OP t1_ixfytki wrote

Can you give an example of the 8:1 ratio and amp?

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WoodenSporkAudio t1_ixg2flq wrote

It just means an amp with a 0.1 ohm impedance can remain totally flat on the output within its 20-20k range without the OI and headphone interaction affecting the frequency response.

Like 32 ohm headphones on a 1 ohm OI, ratio is 32:1

If it were a 4 ohm OI it’s 8:1 still flat

If it’s a ln 6 ohm oi it would be 5.333:1 with some some frequency response impact for good or for bad. It depends on the headphone impedance curve and the listener and the final FR.

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icanseeyourpantsuu OP t1_ixjkob4 wrote

Man, thanks for the reply but sorry i dont understand.

I made this post because a guy on youtube said that the 600ohm dt880s does not need more than 100mW @600ohm and that it's more on output impedance matching where the 880s require a 100ohm output impedance match.

So im looking for Amps that has this specification or would closely perform like it. So far, i only found the Bottlehead Crack which is rated 120ohms of output impedance, but it's at 349usd. I'd like to keep my budget under 250.

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WoodenSporkAudio t1_ixkk84l wrote

Is DT880 600 ohm with 100 ohm an industry thing?

If so, Then get an amp with around 7.75+ volts into 600 ohms with a 100 ohm OI

That’s approx 100mw into 600 ohms raw RMS without the complex impedance curve of the headphone and the interaction with the OI of the amp

You can drive high impedance headphones with low Ouput Impedance amps but the higher output impedance options are like a nice analog EQ very tasteful sometimes

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