Tube Earphone Amplifier DAC Class A 6N3 SRPP Drive 6N5P 18-600 Ohm Output Power Stereo Aluminum Case Black HIFI 

Model No: WEVTD-U202
 

Suitable for those headphones as below.

1).D580/HD600/HD650/HD800

2). K701/K702/Q701

3). DT880/T70/T90

4). SR225/SR325/RS1e

Feature

1. Use 2pcs 6E2 tube as signal level indicator, 2pcs 6N3 tube for left and right channels, each served with SRPP voltage amplification, and then adopt a 6N5P tube for cathode output of left and right channel. Its noise level has been able to achieve practical requirements.

2. USB decoder: it is a tube amp with USB DAC function, U202 USB DAC portion is made of USB receiver and separate decoder chips, USB decoder chip used as CM108.Through repeated the tests, not only does U202 supports USB2.0 high speed transmission, but the thickness of sound and stability is much better than high cost of PCM2706 chips for USB1.1 profile, which is the main reason we chose it.

3.DAC decoding portion use a TDA1305T chip of famous Ph ilips  which is its excellent sound quality and some foreign famous brands of CD, amplifier manufacturers widely used .

Specifications

1. Driver impedance:18 -600 ohms

2. Output power:  3.5W (600 ohms)

3. Output levels: maximum 50v rms

4. Frequency Response: 20Hz - 20kHz (-3dB)

5. Signal to noise: > 109dB (A-wtd)

6. Total Harmonic Distortion: <0.008% 20Hz to 20kHz

7.USB input: CM108 supports USB2.0

8.DAC: TDA1305T

9.Line input: RCA  GB dual analog input

10. Line Output: RCA dual analog outputs

11. Headphone output : 6.35 stereo jack

12.Support System : Win2K, Win XP, Vista, Win7 (32/64), Win8, Win10, Mac OS X

13. Tubes:

6E2 x 2

6N3 x 2

6N5P x 1

14.Input voltage: 110V~240V AC 50/60Hz

15.Static power consumption: 35Watts

16.Dimension(L* W * H ): 230mm * 170mm *180mm (not including height of tubes)

17. Working voltage: DC24V

18.Net Weight: 3kg

19.Gross Weight 3.5kg

20.Packing List:

U202 tube earphone and preamp x 1 (including tube 6E2 x 2pcs, 6N3 x 2pcs, 6N5P x 1pc)

power cord x 1

USB cable x 1

Note:

A. Alternative tubes for 6N3, there are 6A8Q, 2C51, 5670,5185,6385,6185, WE396

B. Alternative tubes for 6N5P, there are 6AS7G, 6080, CV2523, CV2984, CV5008, CV8032, CV10322, CV8216, CV8614, 6520, ECC230, A4475, 6080WA (WB), 5998,421 A, 7236,6 H13C, 6082,6528

Connection method

1.    Computer == "3.5 to RCA cable ==" U202 headphone amplifier == " headphone amp 

2.    CD player == "RCA to RCA cable ==" U202 headphone amplifier == " headphone amp 

3.    I PAD == "3.5 to RCA cable ==" U202 headphone amplifier == " headphone amp

4.    Computer USB ( the unit has a decoder ) == "RCA to RCA cable ==" U202 headphone amplifier == " headphone amp 

Note:

1.    Heat start-up of tube amplifier is stable after power on for 15 seconds, it can start working properly aloud.

2.    The unit is a pure Class A tube output and power consumption is about 40W, so heat is great, please pay attention to ventilation when using, and prevent be scalded by the tube overheating. It is normal that the unit is high temperature for some time is use, do not worry about it, it will be self- recovery protection when temperature is above 95 degree Celsius.

3.    When it is used as a preamp, please do not put the volume knob for this unit as entire audio system volume control knob, to prevent the unit’s inherent background noise be amplified by power stage when it is in maximum gain, and avoid that the background noise of pre-amplifier amplified is bigger than useful signal in a small volume), it is strongly recommended that volume knob of power stage amp 's as the size of the volume control of the entire sound system.

Applications

If the U202 match the 2x 100W HIFI transistor amplifier, they are a heaven-made match, they will provide you high performance and excellent exprierences.