-
The supplied Russian tubes are in FY29. North American tube identification is 829B.It is a composite tube in which two Cambodian tetrodes are packaged in the same glass shell. Using it in a power amplifier with push-pull output can reduce the trouble of tube selection and match.
-
The FY29 filament voltage is 6.3V, the current is 2.25A, the screen voltage is 600V, the curtain grid voltage is 200V, the zero letter screen current is 40mA, full letter current is 110mA. The grid bias voltage is -18V, the optimal load impedance from the screen electrode to the screen grid is 13750Ω, and the output power (effective value) reaches 50W when the signal is full.
-
In order to further simplify the circuit, this unit uses a composite tube 6N3 for preamplification and inversion. In this way, a single 6N3 and an FY29 can be used to complete the power amplifier task, and it has a 10W power output. The sound is soft and smooth, warm and delicate. This is why the tube amplifier has not been completely replaced after the emergence of many new technologies.
-
This machine is small in size, unique in shape, but strong in thrust. Do not use the power of ordinary transistors or digital power amplifiers to analogize the actual thrust of this tube power amplifier, because of the high power supply voltage and unique output cow structure, the output internal resistance change is relatively small for high and low-frequency signals, and it has good low-frequency driving ability.
-
This unit is suitable for pushing ordinary bookshelves and most floor speakers. We have tested that the difficulty to push Dynaudio / Dynaudio contour 1.8-floor speakers have also been impressed. We have added a new Bluetooth 5.0 receiver module to facilitate the wireless connection of portable devices such as mobile phones.
Specifications
| Specifications | Details |
|---|---|
| Model | FY29 829B |
| Output Power | 10W x2 Class A (= 50w * 2 as class AB amp) |
| The Filament Voltage | 6.3V |
| Current | 2.25A |
| Screen Voltage | 600V |
| Curtain Grid Voltage | 200V |
| Zero letter Screen Current | 40mA |
| Full Letter Current | 110mA |
| Grid Bias Voltage | -18V |
| Dimensions | 215 width X190 height X308 |
| Device Weight | Net weight 12.3KG |
What‘s in the box？
| Item | Quantity |
|---|---|
| Fosi Audio FY29 Power Amplifier | x 1 |
| AC Input Cable | x 1 |
| Qingfeng FU29 Push-Pull Tube Amplifier | x 1 |
Worldwide Shipping
We can ship to any country or region in the world. Shipping is free worldwide, except for special regions/countries where we are unable to offer shipping, such as Ukraine.
1. Overseas warehouse delivery
2. China(Shenzhen) delivery
1. Overseas warehouse delivery
Overseas warehouse delivery: United States, Canada, United Kingdom, Germany, France, Italy, Netherlands, Portugal, Spain, Sweden and Hong Kong, Macau, Taiwan in China are free shipping for you.
Order processing time: All orders require 1 business day for preparation and packaging, excluding Saturdays and Sundays. Holidays will be extended according to China's legal time.
Pre-order products: The shipping date is based on the specific product labeling.
After shipment, you can track your order. To track your order, please click here.
United States, Canada, United Kingdom: 3-5 days.
Germany, France, Italy, Netherlands, Portugal, Spain, Sweden: 3-7 days.
Other countries：3-10 days.
Note: If there is a stock shortage in the overseas warehouse, the delivery time may be extended by 5-15 days. We will contact you via email, and you can also inquire with our customer service regarding the delivery status.
2. China(Shenzhen), shipping worldwide via 4px.
Order processing time: All orders require 1 business day for preparation and packaging, excluding Saturdays and Sundays. Holidays will be extended according to China's legal time.
Pre-order products: The shipping date is based on the specific product labeling.
After shipment, you can track your order. To track your order, please click here.
Ships from China warehouse, standard shipping usually takes 5-15 days, fast shipping takes 3-7 days ($25 shipping fee applies)
Note: If there is a stock shortage in the China warehouse, the delivery time maybe extended by 5-15 days.
We will contact you via email, and you can also inquire with our customer service regarding the delivery status.
Not all products have stock in other warehouses. If you require urgent delivery from another warehouse, please confirm with us first.
If your order does not display any shipping time, it is usually because you have purchased multiple products, each from a different warehouse, resulting in the inability to display the normal shipping time. It will default to 5-15 days.
If you have any questions, please feel free to contact us.
Taxes
European Union (EU) Countries:
For shipments from the China warehouse to EU countries:
The final price you see on the official website includes taxes.This way, you don't have to pay the taxes yourself, saving you time and effort.
However, if you prefer, you can choose to pay the taxes yourself, and we will refund the taxes paid through our platform.
Other Countries:
The final price you see on the official website does not include taxes. Imported goods/services may be subject to taxes and are governed by local country/region laws. We do not collect any taxes or value-added taxes, nor do we assume any tax liability.
If you have specific requirements, please contact us.
For countries with complex customs procedures, such as South America, we recommend ordering through AliExpress or finding a recipient in North America to assist with the shipment.
Note: Remote addresses may experience longer delivery times and incur additional costs.
✓ 30 Days Free Return
At Fosi Audio, we always strive for the highest customer satisfaction. If you are dissatisfied with the product or if it has any defects, you can request a return or refund.
Within 30 days of purchase, for any reason whatsoever, undamaged products can be returned for a full refund. Once the returned items are inspected upon arrival at our warehouse, the refund process will be initiated.
Items must be in their original packaging. For non-quality related return requests, the buyer is responsible for the return shipping costs. Returns that do not meet the above requirements may be rejected.
We cover return shipping costs for the following situations:
- Defective parts.
- Damaged equipment.
- Incorrectly shipped items.
The 30-day period starts from the day you receive the item.
*If your order exceeds the 30-day free return period and it is still unopened, you may still apply for a return. However, you will need to bear the return shipping costs, and a 15% restocking fee will be charged. (This situation only applies to products purchased from https://fosiaudioshop.com/)
How can I initiate a return?
- Please contact Fosi Audio customer support to initiate the return. Explain the reason for the return and provide the invoice or screen capture to confirm the order number.
customer support email: info@fosiaudio.com
Phone: 00852-67645515 - Fosi Audio customer support will provide you with the return address within 1-2 days.
- To expedite the refund process, make sure to send the return notification to Fosi Audio customer support with the following information:
- tracking number
- shipping receipt (If shipping fee refund needed)
- PayPal account (If shipping fee refund needed)
How long will it take to receive the refund?Once the returned items reach our warehouse, we will promptly process the refund. The refund will be made using the same method as your original payment. The processing time usually takes 3-5 business days.
![[Upgraded Version] Fosi Audio TB10D TPA3255 Power Amplifier 300Wx2 HiFi Digital Stereo Audio Amp 2.0 Channel Amplifier with Bass and Treble Control](http://fosiaudio.com/cdn/shop/files/1_aee03704-2f84-46b3-99b8-25b3fdb74472_260x.jpg?v=1700193725)
RECENTLY VIEWED PRODUCTS