Nobsound Super Mini Vacuum Tube Headphone Amplifier Home Stereo Desktop Audio Preamp

Features
With 3.5mm AUX input and 3.5mm headphone jack output, can be used as a headphone amp and a stereo preamp, compatible with most audio source such as MP3, ipod, phone, tablet, computer, CD player etc. and output can connect headphone, amplifier, active speaker etc. to greatly improve the sound quality.
Adopting classic 6N3 vacuum tube(much better than 6J*) to effectively eliminate the harsh digital sound, providing HiFi clear, soft and smooth, warm and sweet tube sound. The sound field is wide, especially suitable for vocals, strings, light music, classical music, etc.
Adopting solid state design, preamp part uses vacuum tube for amplification to make the input audio signal more natural with high dynamic range, and amp part uses NE5532P op amp to ensure the speed and power of audio signal transmission.
Super mini size and exquisite appearance, looks elegant and attractive. All-aluminum chassis, with power indicator and volume control, convenient to use and perfectly suitable for your desktop or a smaller space in your home or office.
Parameters
Audio input: 3.5mm AUX
Audio output: 3.5 headphone jack
Output power: ≥ 1100mW (32Ω)
Matched headphone impedance: 18-600Ω
Frequency response: 20Hz-30KHz
THD: <0.005%
SNR: ≥110dB
Working voltage: DC 12V
Dimensions(W*D*H):71*74*24mm / 2.80*2.91*0.94in (not include knobs)
Package dimensions(W*D*H): 260*200*80mm / 10.24*7.87*3.15in
Net weight: 113g / 0.25lb
Package weight: 315g / 0.69lb
Packing List
1*D2 Headphone Amplifier
1*6N3 Tube
1*Power Adapter