I'm looking at possibly getting the DT 990 Pro 250, but only have a Fiio E11 headphone amp to power it. I know the 250ohm is pretty high and was wondering if the E11 would be efficient enough to power the HPs. I had done some searching and never found a definitive answer on this question. I don't have any extra money to upgrade my amp, so I'm stuck with the E11 (which I actually like fine). Thanks in advance for the responses.
E11 sufficient enough to power DT 990 Pro 250ohm headphones?
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The E11 will do fine. It is often more about the sensitivity of the headphone than the impedance. The DT990 has a 96dB sensitivity making it not ideal for portable devices, but with the E11 amp there should be no issues with getting them loud enough.
You can learn more here:
Here are the worst case numbers for the 250 Ohm DT990
The FiiO Specs can be found here:
The E11 is not the ideal amp for the 250 Ohm DT990, but it should work. I would recommend something with a little more power for best performance.
Be sure to check out the $200 and under amp shootout here: