Douk Audio H2 - Vacuum Tube Balanced XLR

Warm Tips Default 6N3 tube can be changed to the following models to enjoy different sound styles: US: 6A8Q / 2C51 / 5670 / 5185 / 6385 / 6185 / WE396 EU: ECC42 Soviet Union: 6H3N / 6H3II Germany: ECF82 Czech: 6CC42 Parameters Brand: Douk Audio Model: H2 Audio input: stereo L/R RCA / balanced XLR Audio output: 6.35mm headphone jack / 4-core balanced XLR Input sensitivity: 0.775V Frequency response: ±0.5dB THD: 0.08% Matched headphone impedance: 16-600Ω S/N ratio: 105dB Max Balanced output(32Ω): 400mW (low gain) / 800mW (medium gain) / 1500mW (high gain) Max Single-ended output(32Ω): 260mW(low gain) / 530mW (medium gain) / 1000mW (high gain) Working voltage: DC 12V (can't over 12V) Dimensions(W*D*H): 155(bottom)/167(top)*128*45mm / 6.10(bottom)/6.57(top)*5.04**1.77in Package dimensions(W*D*H): 310*280*70mm / 12.20*11.02*2.76in Net weight: 658g / 1.45lb Package weight: 900g / 1.98lb Packing List 1*H2 Headphone Amplifier 2*6N3 Vacuum Tube 1*DC 12V Power Adapter 1*6.35mm to 3.5mm Headphone Adapter 1*User Manual