-40%
HiFi 2.0 Channel Class A Power Amplifier Board DIY Stereo Audio Amp
$ 158.39
- Description
- Size Guide
Description
Add to Favorites SellerJoin newsletter
Payment
Shipping
Return Policy
About Us
Contact Us
View All Categories
Nobsound®——Douk Audio
Germany Warehouse
USA Warehouse
UK Warehouse
HiFi Art-Elfidelity
Hi-Fi Tube Amplifier
Famous Brand Amplifier
Integrated Amplifier
Digital Amplifier
Phono Pre-Amplifier
Pre-Amplifier
Headphone Amplifier
DAC / Audio Decoder
Guitar Effects
Digital Interface / Sound Card
Bluetooth Audio Devices
AV Tube Integrated Amplifier
Record Players/Home Turntables
Hi-Fi Speakers
Aluminum Chassis/DIY Enclosure
Tubes
Hi-Fi Cable
Audio Signal Switcher
PSU / Power Supply
Speaker Protection
Audio Accessories
Amplifier Transformer
Other
Home
Feedback
Save Seller
New Listed
Ending Soon
Auction
Buy It Now
On Sale
Store Category
Nobsound®——Douk Audio
Germany Warehouse
Audio HiFi & DIY
USA Warehouse
UK Warehouse
Phono Pre-Amplifier
Digital Amplifier
HiFi Art-Elfidelity
PC filtering part
Sound card/DAC
Hi-Fi Tube Amplifier
EL34 Tube Amplifier
300B Tube Amplifier
KT88/KT66 Tube Amplifier
6P3P/6P1 Tube Amplifier
Other Tube Amplifier
Tube Amplifier DIY Kit
Diy kit
Completed in case
Tube Pre-Amplifier
Tube Headphone Amplifier
Famous Brand Amplifier
Raphaelite
Raphaelite transformer
xDuoo
APPJ
ZHILAI
Line5
Integrated Amplifier
Diy kit
Assembled board
Completed in case
Digital Amplifier
Phono Pre-Amplifier
Pre-Amplifier
Diy Kit
Assembled board
completed in case
Headphone Amplifier
Diy kit
Assembled board
Completed in case
DAC / Audio Decoder
Diy kit
Assembled board
completed in case
XMOS DAC
Guitar Effects
Digital Interface / Sound Card
Bluetooth Audio Devices
AV Tube Integrated Amplifier
Record Players/Home Turntables
Hi-Fi Speakers
Speaker Frequency Divider
Speaker Unit
Finished Speaker
HiVi Speakers
Aluminum Chassis/DIY Enclosure
Small-sized
Medium-sized
Large-sized
Personalized Chassis
Tubes
Shuguang tubes
PSVANE tubes
Electro-Harmonix
Tung-Sol
Hi-Fi Cable
3.5 Line Out Cable
Conversion Cable
Headphones Upgrade Cable
Power Cable
RCA Audio Cable
XLR Audio Cable
USB Cable
Coaxial Cable
Dock Cable
Optical Fiber Cable
Other
Audio Signal Switcher
PSU / Power Supply
Diy kit
assmbled board
Speaker Protection
Diy kit
assembled board
Audio Accessories
Amplifier Transformer
R-type Transformer
Toroidal transformer
O-type Transformer
Other Transformer
Other
Join Our Newsletter
Receive our email newsletters about new items and special promotions!
Sign Up Now !
HiFi 2.0 Channel Class A Power Amplifier Board DIY Stereo Audio Amp
Item description
This is assembled 2.0 channel board and tested well.
Introduction
When powered by ±50V power supply, the maximum undistorted output power is 110W, default class A output is 30W which needs a 6kg heat sink of each channel. If you want to higher class A output power, please use larger heat-sink and adjust the static current.
The power transistors are installed below the heat sink to facilitate the heat dissipation; the ultra-wide and thick copper foil wiring ensures the smooth pass of large current.
The board uses a mirror-symmetrical design, which is more neat and convenient to install. Compatible with TO-3 gold-sealed transistors and TO-264 plastic-sealed transistors.
With speaker protection reducing wiring inside the machine; plug-in terminals are used for power output electronics, making it easier to pull out and secure in contact.
The LOWBIAS (low bias current) selection switch has been added, which can be used to conveniently switch between pure Class A and Class AB working states.
Working voltage DC ±36-±60V, it is recommended to use DC ± 50V (AC dual 38V). It is best to supply power to two channels independently, each channel transformer power is not less than 300W, 500W is recommended, output voltage high current 0-38V, 0-38V; and small current 0-12V for the speaker protection part.
The heat dissipation aluminum bridge (350*70*15mm) is made of all-aluminum at one time and is brushed and black anodized. When installing, you only need to tightly connect and fasten the 6 fixing holes on the heat dissipation bridge with the heat sink with screws. The diameter of the fixing hole is 7mm, and the distance between the holes is 50mm.
Parameters
Working voltage: DC ±36V-±60V(DC ±50V /AC Dual 38V 6A is recommend)
Output power: 50W(±50V / 600mA quiescent current)
Default quiescent current: 100 / 450mA( class A output 30W)
Matched heat-sink of each channel: ≥7.5kg(class A 50W), ≥5.5kg(class A 30W)
PCB size: 350*128mm
PCB height: 27mm
Transistor: ON MJ15024G, MJ15025G
Radiator size: 350 * 70 * 15mm
Weight: 3Kg
Notice:
1. Default quiescent current is100 / 450mA which is measured in 420*200*60mm and 6kg heat-sink, please adjust the quiescent current according to your own heat-sink.
2. Because of different batches, the ROE capacitors will be a little different from the pictures, but their parameters and specifications are all the same.
Packing List
1 x Amplifier Board
1 Set x Signal line
1 Set x Screws
1 Set x Pillars
1 Set x Plug Spring
Payment
Delivery details
Return Policy
About us
Contact us
Payment
Safe and secure payment by PayPal.
Delivery details
Please leave
VALID TELEPHONE NUMBER
which is necessary and very important.
Customs Clearance
We are NOT responsible for any customs duties fee.
We are NOT responsible for any import tax or customs delay.
Most item will be shipped within 2 working days. For package less than 2KG, we use
Airmail
(10-25 days to most countries)
and for package over than 2KG we use
Expedited Service such as DHL, UPS and FEDEX
(5-8 days to most countries).
Return Policy
Free Return Within 30 Days
We provide return within 30 days
for all items you bought on eBay, full refund and return shipping will be provided.
1-year warranty
is provided for all items(
Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes).
If you are satisfied with our products and service please leave a 5-star
.
Feedback is very important to us just like our lives, please DO contact us before you leave a neutral
or negative
feedback, we will provide better solutions until you are satisfied.
About us
Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including
Douk Audio / Nobsound / Little Bear
etc.
As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable.
We will spare no efforts to bring great products and service for
customers
and extremely
to
improve our customers’ listening experience.
Contact us
Please don't hesitate to contact us if you have any questions or comments about our items.
And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at:
Working time
Beijing(CN)
Monday-Friday
09:00 AM - 18:00 AM
New York(US)
Sunday to Thursday
08:00 PM - 05:00 AM
London(UK)
Monday-Friday
01:00 AM - 10:00 AM
Paris(FR)
Monday-Friday
02:00 AM - 11:00 AM
During holiday, please allow us to response you early next week. Please don't leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation.
Feedback
Save Seller
New Style
Ending Soon
Auction
Buy It Now
On Sale
When powered by ±50V power supply, the maximum undistorted output power is 110W, default class A output is 30W which needs a 6kg heat sink of each channel. If you want to higher class A output power, please use larger heat-sink and adjust the static current.