Little Dot LD Q+ Tube Hybrid Headphone amplifier USB DSD DAC 100V to 250V 

Features:

This is a tube and transistor hybrid headphone amplifier USB DAC

This machine has compact industrial design,is that the complex tube / transistor / IC

HD ASIO USB decoding has been intergrated into a diameter of only 68mm of PCB board.

Although the volume of the machine is small, but it can easily drive 32-300 ohms headphones.

Technical Parameters:

1, decoding section:

Using SA9227 high sampling rate USB + CS4398 ASIO program, independent power supply (do not take the power from the PC).

PCM: Support 16-32 bit word length; 32-384KHz HD sampling rate

DSD: support DSD64,128,256 format, DOP / Native native hardware decoding

2, amp sections: All-discrete, PNP / NPN transistor complementary pair, fully symmetrical Pure Class A amplifier output circuit.

Powerful sound mellow, sweet chilly. Amp can be replaced in order to upgrade in the future 

3, the input terminals: 3.5mm line input (LO) : Micor USB digital input socket

4, the output terminals:  3.5mm headphone jack (PO), 3.5mm line output decoding (LO)

5, the distortion:   0.01% (Output: 1V rms 1000Hz)

6, the signal to noise ratio: 92dB

 7, frequency response:5Hz - 50KHz (-3dB)

8, the output power: 300mW (32 ohm) ,100mW (300 ohm)

9, magnification: GAIN: 6

10, adapt headphone impedance range: 8 ohms to 300 ohms 

11, power consumption: 10 VA

12, volume:

   Host: Diameter: 76x70 (h) mm

   Power: 145x55x50 (h) mm

13, Weight:

  Host: 188 g

  Power: 880 g