Sram boxed licensed 2017 RED 22 speed sprocket disk QUARQ DZero power meter supporting disk

Sram boxed licensed 2017 RED 22 speed sprocket disk QUARQ DZero power meter supporting disk
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Oписание продукта

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2X7W Tube Amplifier Class A Single-ended 6N9 Pre-amplifier 5Z4P Rectification 6P3P Power Amp USB Disk SD MMC Card FM Radio Remote Control HIFI Audio (Model No: WVTU-6P3P)


This is a pure class A single-ended tube amplifier with a radio and MP3 playing through USB disk or SD card. Its output power is 2x7W, used tube 6N9 as a pre-amplifying, 2pcs 6P3P as a power amplifier, 5Z4P as tube rectification. USB player support U disk / SD card / MMC card, support MP3 format with memory function. Support a variety of EQ sound modes, support for infrared remote control. Also supports FM radio function with LED digital display.


There is RCA terminals and a converted switch for USB and CD player input signals are on the rear of the amplifier, and with a band radio antenna input.


When using the MP3 player and FM radio function, the volume will be significantly smaller than the CD input on the same potentiometer clock, this is because the output levels of the CD signal is higher than the two others, and please adjust volume up more at this moment.





1.    Support to play MP3 music of U disk and SD (WMA and other formats are not supported);

2.    With memory IC, if inserted U disk or SD card it will automatically play when power on;

3.    Support a variety of EQ music mode (each press EQ button to change an effect);

4.    Power and memory: after power on again to start playing from that song off state;

5.    FM radio function. After connecting the antenna, it can receive your local FM radio station,     the effectdepend on geographical environment varies, some places will be blocked because it cannot receive radio signals under the environment, please move your antenna position or audition for a new place.





Product Specifications

1.    Output Power: 2 x 7W (8Ω, 1kHz, THD = 10%)

2.    Frequency response: 13Hz ~ 33k Hz-3dB (8Ω)

3.    Total Harmonic Distortion: 1.5% (load resistance 8Ω, 1kHz, the output power of 1W RMS)

4.    SNR: ≥90dB

5.    Whole consumption: ≤80W

6.    Input impedance: 100kΩ

7.    Input Sensitivity: 0.8Vrms

8.    Output Impedance: 4 or 8Ω

9.    Operating voltage: 220V / 50Hz

10. Tube: 6N9P x 1, 5Z4P x 1, 6P3P x 2.

11. NW: 6.2KG

12. Dimensions (W * D * H): 310mm * 170mm * 170mm

13.  Accessories

Power cord x 1


Remote control x 1






about shipping

1. Worldwide Shipping (Except some countries).

2. Orders processed timely within 3~5 business days after the payment verification. 

3. We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address.

4. The images shown are not the actual item and are for your reference only.

5. SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season

6. We supply 4 kinds of shipping services as below

A. Expedited Shipping: DHL, UPS or Fedex. For faster shipping and smooth transaction, we will change the shipping company among them.  Estimated Delivery Time: 3~7days

B. Standard Shipping: EMS, eParket (US available) or DHL Global Mail (Germany available only) Estimated Delivery Time: 3~7days

C. Economy Shipping: China Air Post Mail / Parcel, Hongkong Air Post Mail / Parcel, Sweden Post, etc.Estimated Delivery Time: 15~60days

D. Special Routes: Russian Special Route, Estimated Delivery Time: 30~ 40days;

                                   Australian Special Route, Estimated Delivery Time: 10~ 15days;

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).

return & refund

We will check the item carefully and make sure the quality before shipment. If some unexpected problems happened, please contact us firstly.If it is quality problem, buyer may submit argue within 7days after receiving the item, buyer must provide photos , video and other evidences to seller for identify. Man-made damaged, buyers take full responsibility.

1) .The buyer return us the goods and responsible for return shipping costs; after we receive the goods ,we will send a new product to buyer and pay for the resend shipping cost.

2) .If the goods (total price including shipping is less than 10USD) has quality problems, we will resend a new product in buyer next order; if buyer don’t plan to make a new order in the near term, buyer can pay the resend shipping cost and ask to resend a new product. 

3). Due to the taxes problem, buyer refuse to receive the goods, buyer need to be Responsible for freight out and home.

about guarantee

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 aliexpress.

about feedback

We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important. We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns. 

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