Audiophiles in search of an all-in-one DAC/amp that doesn’t skimp on specs will find a strong candidate in the xDuoo TA-30 Tube DAC/Amp. The TA-30 is equipped with an ESS ES9038Q2M DAC and a headphone amplifier that can output an impressive 3000 milliwatts at 32 ohms—enough to drive the most demanding headphones. Within the headphone amp are two tubes: a thick-sounding 5Z3P used for high-voltage rectification, and a precise-sounding ECC82 tube used to process the audio. To meet all connectivity needs, the TA-30 has USB, coaxial, and optical inputs. It also features Bluetooth 5.0 powered by a Qualcomm CSR8675 chip which supports SBC, AAC, aptX, aptX LL, aptX HD, and LDAC formats.