I have only big old headphones (Kenwood KH 71, 1970), which has an impedance of 8 ohms and a maximum of 0.5 W input powers. Before buying the headphones, I was informed that a very low impedance headphone is even more difficult to handle than hd650. And when I got the KH 71, I feel really terrible place to Fiio E7, Sony M10 (an excellent writer) and my laptop. The volume is large enough, but the sound is totally a mess. So I hope to be acquainted with whether the E9 Fiio is able to drive my headphones old fine. Could u please give me a few advices?
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