Audirect ATOM 4

Technical Specifications Model: ATOM 4 DAC Chip: ESS9281AC PRO x 1 Operation amp: RT6863C *2 Audio Input: USB-C Audio Output: 0.14 inch (3.5 mm) single end/0.17 inch (4.4 mm) Frequency response: Up to 40 kHz or less than ±0.08 dB Dual Amplifier: Dual RT6863 operational amplifier in one Stage and Second Stage Switching Amplifier True Balance. 4.4mm Qutput. 3.5mm SE @utputPower: Max 2Vrms ≥126mW (32Ω) Current Drive ≥7mW (600Ω) Waltage Drive 4.4mm balanced headphone output Maximum Output Voltage: Max 4.2Vrms Output power: ≥137mW @ 32Ω(current drive) Output power: 229mW@ 600Ω (voltage drive) SNR: -119dB THD+N:0.0004% Sampling Rate: Up to 32 bit/768 kHz. DSD Support: Up to DSD512 Weight: 19g Built-in battery: No