It use the best Ultralinear Push-pull amplifier circuit, and It uses the latest improved exports version famous vacuum tube 5881A as the power amplifier Preamplifier use SRPP amplification circuit and Nagao-type inverter circuit, make it let the audio frequency
wide, distortion is little.
The output transformer use Japanese audio special stalloy (thickness is 0.35mm) and high
strength enamel insulated wire. It used special coiling process, let the audio frequency
wide, to ensure timbre of the trebles, mediant and bass are nice, transparent and powerful.
This amplifier is made with foreign country’s famous factory audio special Enthusiast
electrolytic capacitor, nonpolarity capacitor (MKP) and high quality metallic resistance.
Main sound channel is made with imported special sound volume Potentiometers.
This amplifier can direct use earphone.YAQIN MC5881A Headphone & Integrated Amplifier

output power: 21+21W RMS (8Ω)
Distortion: 5%
Signal noise ratio (SNR): ≥78dB(A)
Frequency Response: 5Hz-79Khz (-2dB)
input sensitivity : ≤190mV
Input Impedance: ≥20KΩ
Output Impedance: 4Ω or 8Ω
Earphone output: VAILABLE
Vacuum tubes: 5881A x4 , 6N1 x4 , 6E2(electro-optical tube) x2
Power supply voltage: 110/220V 60Hz/50Hz
(100V,110V,120V, 127V, 230V, 240V version will
take 3-14 work days to order),
220V version is in stock
Dimensions(L x W x H):320mm x 210mm x 350mm
Net weight: 19kg
Gross weight: 20Kg