Products
HIFI Tube Earphone Amplifier USB DAC Class A 2P2 VMOS FET Tube Preamplifier Support OTG
Important: Import duties, taxes and other customs related charges all are not included into shipping cost . Buyers bear all responsibility for all extra charges incurred (if any).
HIFI Tube Earphone Amplifier USB DAC Class A 2P2 VMOS FET tube Preamplifier Support OTG
Model No: WVDA1002
There is a USB DAC with tube 2p2 and VMOS FET.
The HIFI earphone amplifier is optimized circuit design, new appearance, beautiful and practical. Pre-amplifier section of tube amplifier adopt direct thermal tube 2P2 and VMOS Field Effect Tube to constitute a hybrid tube amplifier, tube and FET combine their respective strengths to both soft and warm tube taste, another FET fast and powerful. Unique vocal timbre of tube is very suitable for human voice reproduction, especially female voice and violin is very beautiful. Because of class A output with high current, its low frequency is powerful surging, make music more appealing!
Especially sound characteristics of direct thermal tube are transparent sound, fine, good strength and control, making it more cost-effective. Direct thermal tube 2p2 is a low pressure tube, generally power supplied by battery-powered previously, there is a good low-voltage characteristics.
Component Selection
All capacitors are used imported brand one, and resistors used 1% metal film in order to ensure its overall quality. The key parts adopt high quality HIFI components like as volume potentiometer used a dedicated volume one of original ALPS. And HIFI earphone amplifier housing is aluminum alloy shell.
For internal circuit modular design, the amp’s power amplification and signal processing circuit board is divided into two main PCB to power amplifier section, and PCB signal input one for processing and DAC section.
Note:
1. Because it is the class A output, current is relatively large, the amp 's shell has a certain high temperature for long time using, , please put it at a good ventilated place;
2. The direct thermal tube has microphone effect, this is also known as "micro- sound effect”, it is a unique for direct thermal tubes. The reason is called “microphone effect”, when direct heat tube work at beginning, the filament will sound a similar “microphone back sound” by external vibration. But when the filaments are stable over time, the sound will automatically disappear. This is why direct thermal tubes have high resolving. When listening direct heat pipe, please place it on a flat table, to avoid a severe vibration on it (If you do not like it, please don’t buy it; if you buy it, you will be recognized the two points above as default.)
3. It has a line input and line output with cable. Line input can take other sources such as CD/MP3, digital players; line output can be connected to powered speakers, amplifiers, etc. Please pay attention behind the line input and earphone output is conversion, insert the earphone then line out off, unplug the earphones line output is switched on.
Product Specifications
1. Amplifier Type: Tube 2P2 and VMOS Class A amplifier.
2. Output power :> 500mW.
3. Frequency response: 20Hz-35 KHz.
4. Headphone Impedance: 32Ω-300Ω.
5. USB Input: CM108, support USB2.0
6. DAC: TDA1305T
7. SNR :> 90dB.
8. Line Input: 3.5mm stereo jack.
9. Earphone Output: 6.35mm stereo jack.
10. Support System : Win2K, Win XP, Vista, Win7 (32/64), Win8, Mac OS X. And also support OTG function that smartphone supported (Need to buy a USB to OTG cable in additional).
11. Dimensions: 132mm * 83mm * 65mm (excluding protrusions).
12. Weight: 520g.
Power Adaptor
1. Input voltage: AC110-240V / 50-60Hz.
2. Output voltage: DC24V 1000mA.
3. Weight: 210g.
4. Packing List:.
HIFI Earphone Tube Amplifier (including tubes) X 1
USB Cable x 1
Power supply x 1
Customer Reviews
Shipping
1.Important: Import duties, taxes and other customs related charges all are not included into shipping cost . Buyers bear all responsibility for all extra charges incurred (if any).
2. We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address. We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
3. When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
4.Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound. The shipping rate can be showed at the Checkout page. There are two options for shippig as below.
A. Standard Shipping(≤2KG): The Post Registered Air Mail, USPS/ePacket, PostNL, Singapore Post, or DHL Global Mail
B. Express Shipping: EMS, DHL, UPS , or Fedex, Special Route.,etc. For faster shipping and smooth transaction, we will change the shipping company among them
C. Economy Shipping: China Air Post Mail / Parcel, Hongkong Air Post Mail / Parcel, or shipment by sea etcReturns Policy
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Seller Guarantees
1. One year Manufacturer`s limited Warranty for defective items (excluding items damaged and/or misused after receipt). Accessories come with a 3-month warranty.
2. Defective items MUST BE reported and returned within the warranty period (with the original packaging, if possible). You must tell us what the defect is and give us your order number. WE DO NOT REPAIR OR REPLACE ITEMS WITH AN EXPIRED WARRANTY. You agree to all of the above-listed policies upon ordering on our store.
