D&A Alpha Fully Balanced Desktop Hi-Res DAC & Headphone AMP Dual ES9039Q2M Decoder

Product Parameters: Inputs: USB / Optical / Coaxial / Bluetooth Outputs: XLR / RCA / 4.4mm headphones / 6.35mm headphones Line output voltage：XLR: 5.2Vrms RCA: 2.5Vrms Output Impedance: LINE OUT: 100Ω HP OUT: Near 0Ω Headphone Amplifier High Gain: Balanced: -3.3dB(L); +6dB(M); +12dB(H) Unbalanced: -9.3dB(L); 0dB(M); +6dB(H) USB transmission: USB2.0 (Asynchronous) USB compatibility: Windows 7 / 8 / 8.1 / 10 / 11(Needs Driver), Mac OSX, i0S, Linux, ANDROID MQA decoder: USB / Optical / Coaxial MQA-CD decode: Optical / Coaxial Bluetooth specification: 5.3(Support SBC, AAC, aptX, aptx HD, LDAC) Power Consumption: <50w Standby power: <0.5W Size: 195 x 55 x 208mm (WxHxD) Weight: 1.65kg /3.64 lb

• Full Protection Suite Thermal & Circuit Safeguards. Distributed cooling keeps temperature swing within ±2℃. DC/overvoltage/overload protection and pop-free relays guard your gear. The amp independently monitors all 4 output phases.
• Dual-Core Decoding Architecture, Dual ES9039Q2M DAC Chips. A true dual-mono balanced system. Independent DACs and clocks per channel eliminate crosstalk. Paired with our SIGMA DAC topology-processing 4 channels per side for summation-it slashes noise to 1/4 of conventional levels, unlocking wider dynamics and a purer background.
• 4C-FBDA Fully Balanced Discrete Amplification. Featuring 32 discrete transistors across four channels, the 4C-FBDA circuit achieves <0.1Ω output impedance and 0.00017% THD. Effortlessly driving 16-600Ω headphones, it delivers 9000mW+9000mW at 32Ω with zero dynamic compression.
• Pure Preamplifier Function. Equipped with NJU72315 analog volume control, Alpha eliminates micro-detail loss at low volumes while attenuating external noise.
• Silent Efficacy Discrete Linear Power Supply. Dual independent Mean Well modules with purification ensure clean, stable power for both DAC and amp sections.