105 AER

Tonal Profile

Open-back at 42 Ohms and 112 dB/mW — as sensitive as the 109 Pro at a third of the price, which makes it the cheapest way into the 'too loud from anything' bracket. At this efficiency the source's noise floor matters more than its power: a hissy dongle will be audible where a 250 Ohm beyerdynamic would hide the same hiss entirely.