P.S. This is A HiFiDIY Product Produce by Mr. Weiliang from China
Output stage sampling expensive ON tube king MJE15034,35. Circuit uses the dynamic characteristics of the best no negative feedback architecture, Pure Class A output. So have a very low output impedance and frequency response was very wide, five times higher than the low end of the TPA6120 load capacity, headphone load range 8-600 Europe. Can even be pushed to small passive speakers. Voltage amplifier stage sampling LME49720 or OPA2604.
Similar products with unique protection circuit relay headphone amp (yellow picture element), so expensive headphones with peace of mind
Pure battery-powered, with the most expensive lithium-polymer battery, did not add any switching power boost circuit composed, long battery life 20 hours. Computers and other devices on the headphones and no high-frequency interference, the tone is more pure. Headphone jack is gold-plated pins, reducing the contact resistance. All rely on USB charging port is to enhance the power amp with low battery plus boost switching power supply board, the results sound color purity declined, reducing battery life, sound edgy.
Total for all aluminum chassis, perfect slim without water chestnut pipelined design, very delicate.
Products are batteries and chargers with a perfect overcharge and over-discharge protection, you can play while charging when desktop use, the volume can be rotated to the left turn off the power. When the charging light is red, the initial charge charger temperature highs late charge basically no temperature. After charging the charger light turns green,
Headphone load range: 8 Ohms - 600 Ohms
Output power:> 1000 mW (32 Ohms)
Total Harmonic Distortion: <0.003%
Frequency Response: 10Hz-25KHz
Built-in Bettery: 1500mAH / 13V
Bettery Life: >20hours
E11 Unit * 1
Ribbon * 2
Power Supply * 1