Em bán 1 combo như sau: 2 con này e đều xách tay ở Mỹ về.

- DAC: NuForce Icon HDP (High-end Headphone Amp, USB DAC, Preamp), con DAC này e mua cách đây 4 năm giá gần 450 đô, nghe rất hay. Các bác google tham khảo thông số giúp em nhé.

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  • USB 2.0 Full Speed compliant and 1.1 supported, 8-96kHz/16-24-bit (88.2kHz is not supported)
  • S/PDIF input: Coaxial up to 192kHz/24-bit or Optical up to 192kHz/24-bit
  • Analog input: 3.5mm or RCA input
  • Audiophile-grade DA converter
  • Low-distortion, high-current headphone amplifier

- Tube Amp: Little Dot MK III Tube Headphone Amplifier, e mua năm ngoái, giá hơn 300 đô, nghe quá hay luôn. điện 220V.

SEPP (Singled-ended Push Pull) OTL in Class-A
Frequency response: 12 hz~100 Khz (-1dB)
THD+N: 0.15% (80 mW @300 ohm)
Power Output:
350 mW @ 300/600 ohm
300 mW @ 120 ohm
100 mW @ 32 ohm
Power Consumption: 30W (228V x 0.130A)
Variable Gain: 3,4,5, or 10x
Recommended Load Impedance: 32 ohm~600 ohm
Input Impedance: 50K ohms
Pre-Amplifier Output Impedance: 600 ohm
Pre-Amplifier Gain: 3-10x (also controlled via gain switches)
Pre-Amplifier Voltage: 10V RMS
Pre-Amplification circuit includes both driver and power tubes
Driver Tubes: 2x RTC5654
Power Tubes: 2x Soviet 6H6N (included)
High quality aluminum chassis
Dimensions (Metric): 270mm deep by 175mm wide by 123mm high
Weight: 3 Kg or 6.6 lbs


http://www.6moons.com/audioreviews/nuforce14/hdp.html
https://www.amazon.com/Little-Dot-Headphone-Tube-Amplifier/dp/B00CHIKIDM

http://www.loa.com.vn/image/NuForce/Icon%20HDP/Nuforce%20Icon-HDP1A.jpg http://www.loa.com.vn/image/NuForce/Icon%20HDP/Nuforce%20Icon-HDP2.jpg http://www.loa.com.vn/image/NuForce/Icon%20HDP/Nuforce%20Icon-HDP3.jpg
http://www.studio-22.com/nuforce/images/NUICONHDP_R-Large.jpg https://images-na.ssl-images-amazon.com/images/I/61oRPXWPozL._SL1500_.jpg https://images-na.ssl-images-amazon.com/images/I/71jGCg6zc%2BL._SL1500_.jpg https://images-na.ssl-images-amazon.com/images/I/61DE4KT6SsL._SL1500_.jpg

sold