19 In stock
IWISTAO Vacuum Tube 6922/E88CC Tubes Preamplifier Stage Built-in Regenerative Power HIFI Audio
Model No: WHTPR-GDX6922BIRGP
Many electrical appliances are converted from AC power to DC. Work at the peak of the AC, which causes the peak of the AC to be cut, causing a lot of harmonic interference. The distortion is generally up to 5%, or even higher when it become more serious. Power processing equipment can effectively reduce Interference, but it can’t be eliminated. The P20 which is recognized as the best American regenerative power supply, has an index of only 0.5%, and the sound is much better!
However, if the power of the regenerative power supply is large, the distortion is difficult to be low. If there is only power that less than 100W ten, it can still achieve ultra-low distortion power, which is applied to the pre-amplifier.
Now, many audiophiles had used a regenerative power equipment, which brings amazing changes in sound, reduces power interference, and significantly improves sound quality.
This tube preamplifier stage built-in an ultra-low distortion 60W regenerative power supply in order to achieve ultra-low distortion and ultra-high signal-to-noise ratio, its distortion is less than 0.01%, ultra-low distortion.
1. This tube preamplifier uses a pair of 6922 vacuum tubes (that is directly replaced by tube E88CC, ECC88, 6n11, 6DJ8), exhausting various methods to achieve strict design goals.
2. Design a 60W ultra-low distortion (0.006-0.009%), less than 0.01% AC power supply! Mostly eliminate the distortion interference of the mains!
3. Vacuum tube 6922 has a first-level common cathode amplification, and the rear cathode output is buffered. The distortion generated before and after the phase is opposite, which can offset the distortion and lay a solid foundation for low distortion;
4. Adopted a small negative feedback with 5dB to reduce distortion without affecting sound dynamics, and also keeps its sound freshly;
5. The high-performance output transformer adopts imported iron core to realize the inverting function, and the phase of test input and output is the same; adopts EI transformer with its recognized good sound, adopts imported Japanese Z11 iron core, ultra-low magnetic leakage, high efficiency, primary It is shielded and isolated from the secondary;
6. Vacuum tube adopts high voltage that is HIFI voltage stabilizing circuit, which has very low noise and an excellent circuit with ripple less than 1MV;
7. The filament voltage and high voltage are respectively supplied by two transformers, which completely reduces their direct mutual interference!
1. Power supply: AC 220V/50~60Hz
2. 10 times magnification (20dB magnification).
3. Distortion: less than 0.02% (output 1V)
a). without tubes
b). with Russia tube 6922 x 2 pcs
5. Weight: 13KG
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 themC. Economy Shipping: China Air Post Mail / Parcel, Hongkong Air Post Mail / Parcel, or shipment by sea etc
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.
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.