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Help Center2016 Newest Melodious MA2 High Fidelity HiFi Headphone Amplifier For Beyerdynamic DT880/990
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2016 Newest Melodious MA2 High Fidelity HiFi headphone amplifier For Beyerdynamic DT880/990
2016 new HIFI headphone,with 110V/220V adjustment,Handmade personally soldering and debugging,fine workmanship, excellent quality.
The Amp reference to Beyerdynamic A2 headphone amplifier,and new design circuit and case,the appearance is similar to A2,even one screw can not be seen all around,machine feet is made of aluminum CNC,with gold-plating.
Good PCB and FR4 board,with more 2 aunce copper and gold-plating workmanship.Power use original import TALEMA enclosed transformer(Beyerdynamic use it)CMC input terminal,Switzerland
Neuitrk headphone socklet,Omron headphone protection relay,ONSEMI ON LM317/337.
Resistance is English WELWYN MFR4,capacitance is LXZ,Germany WIMA,Japanese ALPS 27
potentiometer,Panasonic audio capacitance,Germany silvered mica capacitor,operational amplifier is MC33078,philips rectifier tube,BC550C/560C geminate transistors,ST BD139-16/BD140-16 audio geminate transistors(Beyerdynamic A2 headphone amplifier use it).
Specification:
Input: RCA standard set of interfaces.
Output: standard 6.35mm headphone jack (also called 6.5mm)
Power: 110V-240V AC (can switch it)
Distortion: <0.002%
Adapter: 30 - 600 Ohms
SNR: ≥103 dB
Separation:> 80/10 KHz
Dimension: 26.2 x 5 x 15.9 cm (excluding protruding parts)
Net Weight: Approx 2.5 kg
Gross Weight: Approx 3 kg
1.Voltage
Can you change the voltage and plug?Our voltage is 110V or 220V,and our plug is EU,US or others.
Yes,we will change the voltage and plug according to your shipping address.
2.RMA
Hi seller,I bought one device from your shop before,but it is broken now under warranty,can you help me repair it?
Yes,please send the defective device or wrong device to our Chinese address(please contact our salesman).
Once we received it,we will send you the new replacement or refund immediately.
3.Warranty
I bought your product 7 years ago,but it's broken now,can you repair it?
Oh...Dear friend,our warranty is 1 year,would you like have a try of the newest one?
4.Samples
Hi,man,I love your products too much,can you send me a sample to test?I will place big order in future.
Hi,my friend,Please buy products from our Aliexpress store directly.
/store/601461
5.Shenzhen Shop
Hi,brother,I am going to Shenzhen,China,can I visit your shop?
Yes,my friend,welcome to our shop,you can have a try of your favorite devices,and it would be better if you could inform me in advance,so I can prepare for your needed devices.
Shop address: 4F9,No.3018,Gume,Wanshang Electric City,Huaqiang north road,Futian zone.Shenzhen,China.
T:86-0755-82521355
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