Denon AH-GC20
ANC, 20 h, Cable, Wireless
Denon AH-GC20
ANC, 20 h, Cable, Wireless
This is because the mobile phone does not have as good an amplifier as the headphones themselves. The amplifier is "skipped" by the headphones when they are connected to the jack, so the amplifier is only used with Bluetooth because a "raw" signal is transmitted with Bluetooth when the mobile phone is connected to the jack and it is already amplified, which is simply worse.