xDuoo TA-10R USB Tube Headphone Amplifier

Compare with TA-10, TA-10R using DAC AK4493, and it supports coaxial and optical input, and the color also upgrade to red color. 

• Classic tube 12AU7
• Top level XMOS 8-core chip (XSA-U8A-64)
• AKM flagship DAC AK4493EQ
• USB/coaxial digital interface
• A class Transistor expansion
• USB OTG
• Dual clock system
• Combination of tube and transistor
• Japanese ELNA SILMC capacitors
• Shell made from aluminum
• Magnetic tube guardrail
• Power supply: AC 100–240V
• Supported OS: Windows (requires drivers), Mac
• Sample rate: SB input
• PCM: 16–32 bit/44.1–384 kHz
• DSD: DSD64–DSD256 (1bit/2.8M–11.2M)
• DXD: 24–32 bit/352.8–384 kHz
• Output power: Phone: 2,000 mW (at 32 ohms); XLR: 2,000 mW (at 32 ohms)
• Frequency response: 10 Hz–100 kHz(+/- 1 dB)
• Gain: +18 dB
• Distortion: ≤ 0.01% (1 kHz, 32-ohm load)
• Suitable headphone impedance: 8–600 ohms
• Size: 9.1 x 4.7 x 4.1 in (23 x 12 x 10.5 cm)
• Weight: 3.3 lbs (1.5 kg)
• USB input
• Two sets of AUX inputs
• SPDIF output
• AUX output