Xduoo MT-602 Double 6J1 Tube Rear Transistor High Performance Tube Class-A Headphone Amplifier

xDuoo MT-604 Four 6J1 Tubes Pre-amp Class A Balanced Tube Headphone Amplifier

XDUOO MT-605 12AU7 Tube

XDUOO MU-601 DAC High Resolution USB ES9018K2M PCM384kHz DSD256 Hi-Res MU601 Decoder

XDUOO MU-603 DAC Tube Preamplifier Bluetooth 5.1 Aptx HD ES9018K2M Decoder Hi-Res MU603 Decoder Pre-amp

XDUOO TA-20 High Performance Balanced Tube Headphone Amplifier Power Amplifier

XDUOO TA-26S 6SN7 6N8P High Performance Tube Headphone Amplifier & Pre-Amplifier

XDUOO TA-30 DAC Tube Headphone Amplifier

XDUOO TA10R AK4493EQ DAC & Headphone Amplifier

XDUOO TA20 PLUS Headphone Amplifier

XDUOO TA66 Tube Headphone Amplifier & Preamplifier

XDUOO X5 Dual CS43131 Portable Music Player

XDUOO XD05 BAL - Balanced Portable Headphone Amplifier & DAC - 32bit/768kHZ DSD512

XDUOO XD05 PLUS 2 AK4493SEQ Portable DAC & Headphone Amplifier

XDUOO XD05 Pro ES9039SPRO Portable DAC & Headphone Amplifier

XENNS Mangird Top Pro