一年前我买了一个Sennheiser 580,因为输入电阻有300Ohm, 一般情况下在音量大时声音会有distortion, 所以几个月后我又买了一个耳机分配器(headphone amplifier)。这个分配器结合了固态电路和真空管,所以声音比一般的固态电路分配器在同一价格range更warm. 后来我把它给买了因为我听的mp3比CD要多所以sound improvement wasn't dramatic to justify the extra cost.
现在我一直在用Sony MDR-E888, 声音还是很中性的. Compare to 580, however it's short on soundstage and bass response. 580 has much tigher and punchy bass and the treble extension is also great.