Dual Stage VACUUM PUMP VP280

Dual Stage VACUUM PUMP VP280
  • Продавецflimmer.com
  • Список ценUS $141.13piece
  • Продажная ценаUS $141.13piece
  • ДоставкаБесплатная доставка
  • Рейтинги4,6 (985)

Oписание продукта

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IWISTAO 2x18W HIFI Single-ended Vacuum Tube Amplifier Class A Rectifier 5Z3PAT Preamp and Voltage Amp 6J8PJ Power Stage Output KT88-98

This is a 2 x 18W HIFI single-ended tube amplifier with tube rectifier. Line structure to the king of  American West - 91 evolved , it takes the essence of the unipolar power amplifier circuit of  American West- 91 , adopts military grade 6J8PJ that praised by the industry\'s of as voltage amplification (6J8PJ can replace US 6SJ7 with same pin ,function, you can plug directly , do not change the line or change pin ) , whose single-stage magnification is up to 60 times , can drive high gate voltage tubes KT88, which known as bottomless pit.


WVT2218( l1l)


Adopts air medical grade silk screen 5Z3PAT as tube rectifier (5Z3PAT is several times higher than 5Z3PJ, whether it is stable or sound aspects to be good) .And adopts Shuguang KT88-98 class A power output. It is not add the feedback loop to take pure Class A output, will not let to contrive in sound performance. Sound of the unit is big dynamic, strong, more suitable to listen to some big dynamic music and vocals, strings.


WVT2218( l4l)



1. Powerful output power, maximum output power of 18W.

2. Output transformers adopt no-feedback loop technology to ensure the sound reproduction well and are high, powerful, and strong.

3. It is also assured that tube current monitoring circuit for a power tubes when replace the tubes for upgrade.

4. Core of output transformers are made of imported 0.35 audio dedicated core, and wire wrap are made of high-purity copper wire with layered staging , string and connection method , a tightly wound three in four folders; stacked thick 86-50, core flux of 13,000 . Output transformer potting techniques, epoxy potting to prevent moisture, vibration, especially for those coastal areas. Housing of export transformers is high-grade stretch hood with surface temperature paint handling, bright pattern process.

5. Power transformer: all new imported 0.35 plates stacked thick 60MM (114-60); It is also made of imported 0.35 thick core, to ensure adequate power, low temperature and a stable power supply.

6. Output sockets are high-end export-oriented base, with a transparent cover.

7. ALPS potentiometer available.

8. Double chassis designing. First one is made of 1.2mm stainless steel plate. Both to strengthen the internal U-shaped steel chassis that thickness up to 2.4 mm. It will not be deformed when a 70kg man stand up on it. The others are imported mirror stainless steel chassis, aluminum panels with high-grade aluminum CNC machining, anodic surface treatment.


WVT2218( l11l)WVT2218( l12l)WVT2218( l13l)WVT2218( l16l)

WVT2218( l3l)


PS: Tube Protection Cover x 1 (Optional; not to be included to WVT2218. If need, please buy it independently )





Product specifications


1. Aviation medical grade rectifier: 5Z3PAT × 1; preamplifier and voltage amplification tube: 6J8PJ × 2; power output tubes: export KT88-98 × 2.
2. Output power: 18W * 2
3. Frequency Response: 20Hz - 35 KHz.
4. Output impedance: 4 / 8 ohms.
5. Total Harmonic Distortion: ≤ 1% (1 kHz).
6. Input Sensitivity: 750mv.
7. Input impedance : 100KΩ ( three input signals )
8. Dimension (W * D * H): 366mm * 300mm * 185mm.
9. SNR: 89dB.
10. Working voltage: 220V / 50hz ± 10%
11. Net weight: about 16.5KG.
12. GW: 18KG
13. Accessories: power cord 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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