- 77 Posts. Joined 3/2012
- Location: Hong Kong
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The Hifiman HE-400 is only 35-Ohms and I'm sure the E07 is decently able to drive 250-Ohm headphones.
Drove my HE400s with E7s for a few months before I upgraded to E17, have to say, it drives it loud, but only barely, and at moderately loud volumes the E7 induces a bit of background static noise to the HE400 because it's being pushed so hard. Shell out another $40 and get the E17 if you are planning to get the HE400s.