FiiO BTR13 Bluetooth Headphone Amplifier with LDAC, aptX Adaptive, aptX HD, AAC (Dual CS43131 3.5mm Unbalanced & 4.4mm Balanced Output) (Blue) 3Dconnexion The NDH 30 owes its

The NDH 30 owes its superior linearity

It can also act in passive mode

4 x AA NiMH Rechargeable Batteries (2500mAh)

The headphone output - with level control - is located on the tower

FiiO BTR13 Bluetooth Headphone Amplifier with LDAC, aptX Adaptive, aptX HD, AAC (Dual CS43131 3.5mm Unbalanced & 4.4mm Balanced Output) (Blue) 3Dconnexion The NDH 30 owes itsFiiO BTR13 The BTR13 features a PC BT PHONE three position switch, allowing you to quickly switch between computer sound card, Bluetooth decoding, and mobile phone modes. This not only eliminates the hassle of switching between different devices but also meets your multi device, multi scenario needs with just one unit. The BTR13 uses the Qualcomm QCC5125 Bluetooth chip, supporting Bluetooth formats such as LDAC, aptX, aptX LL, aptX Adaptive, aptX HD,