ifi Audio iDSD Valkyrie black; Hi-res USB DAC + headphone amp; Headphone connection: 3.5 mm stereo jack and 4.4 mm balanced jack; Output impedance: <0.3 ohms; Bluetooth version 5.4; Bluetooth codecs: LDAC, LHDC/HWA, aptX Adaptive, aptX Lossless, aptX, AAC, SBC; Bluetooth chip: Qualcomm QCC5181; Runtime: up to 18 hours; Power: 2475 mW/8.9 V @ 32 ohms, 160 mW/9.8 V @ 600 ohms; Power (balanced): 5700 mW/ 13.5 V @ 32 ohms, 640 mW / 19.6 V @ 600 ohms; Connections: 1x 4.4 mm jack OUT, 1x 3.5 mm jack OUT, 1x USB-C for charging, 1x USB-C IN, 1x S/PDIF IN, RCA LIne OUT, 1x 3.5 mm jack OUT, 1x 3.5 mm jack IN/OUT, 1x 4.4 mm jack IN/OUT; 2 analogue modes: XSpace (immerse yourself in concert-like sound), XBass (bass boost for recordings or headphones with weak bass); Digital filters: Bit Perfect, Standard, Minimum, GTO, Apodising, Transient Aligned, K2 Mode, K"HD Mode; TFT screen; Power supply: 5-20V; content of delivery: iDSD Valkyrie, USB-C to USB-C cable, DC to USB-C cable, USB-C to USB-A adapter, Toslink optical adapter, USB-C to Lighning adapter, charging cable, protective bag, quick start guide; Weight: 882g;