100W
Features
1. Switching noise is small, will not have too much impact on the speaker, to protect the speaker while providing a more comfortable listening experience
2.Strong 100W power: support mono 100W high power output, easy to drive all kinds of speakers, to meet the demand for high sound quality
3. Classic circuit architecture: adopts the classic amplifier circuit design, stable and reliable operation, to ensure long time use without failures
4. As long as you install and connect correctly, no need to debug: as long as the connection is correct, no need for any debugging can be used normally, the operation is simple and convenient
5. Low noise, zero drift: small bottom noise and zero drift control, to ensure pure sound quality output, restore the real sound details.
 
Specification
Operating voltage: DC-10V-45V (recommended voltage (+35V) -0-(-35V))
Rated output power: 100Wx1 (4Ω±35V)
Maximum output power: 150Wx1 (4Ω±45V) large heat generation, not recommended
Board size: 80mm * 50m * 30mm
Input and output seat spacing: 5.08mm
Hole distance between the two tubes: 47MM
Board power tubes are: 2SC5200 + 2SA1943 (Refurbished)

 
200W
Features:
1. Dual channel support: Single channel design requires two boards to achieve dual channel functionality.
2. High voltage resistance tube: A970/C2240 tube is used for pure and undistorted sound quality.
3. Wide voltage adaptation: Supports ± 20V-90V power supply, suitable for various usage scenarios.
4. Strong output power: 200W high-power output, easy to drive 15 inch speakers.
5. Classic circuit architecture: adopting classic amplifier circuit design, stable and reliable operation, ensuring long-term use without faults.
 
Description:
The board is a mono post amplifier board, and if dual channel is required, two amplifier boards need to be purchased for circuit design and use; A970/C2240 high-voltage audio pair tube dual differential circuit and A1145/C2705 voltage amplification are used to promote the use of medium power pair tubes A1837/C4793, and the output stage uses A1943/C5200 high-power pair tubes. Wide power supply range, DC positive and negative 20V-90V can be used, as long as enough power is supplied, it can easily reach 200. Good sound quality, strong driving force board, and 15 inch speaker can be pushed without pressure!
 
Specifications:
Supply voltage: Dual voltage DC ± 20V-90V (recommended to use below 90V, do not challenge the voltage limit). )
Power: 200W (undistorted power)
PCB board size: 120 * 60MM (length * width)

 
300W
Product Features:
1. High power output, up to 300W, easily drives large speakers.
2. Uses high-voltage audio transistors for clear sound quality and strong stability.
3. Wide power supply range, supports ±20V-90V, suitable for various power environments.
4. Powerful drive capability, effortlessly drives 15-inch speakers with outstanding performance.
5. Compact size for easy installation, suitable for various audio systems.
 
Product Introduction:
This is an upgraded version of the single-channel amplifier board 1943+5200 high-power transistor power amplifier board. The board is a single-channel power amplifier board; for stereo applications, two amplifier boards are required. The circuit design employs A970/C2240 high-voltage audio transistors in a dual differential configuration, with A1145/C2705 for voltage amplification. The drive stage uses medium-power transistors A1837/C4793, while the output stage employs A1943/C5200 high-power transistors; The power supply range is wide, supporting DC ±20V to 90V. As long as sufficient power is supplied, it can easily achieve an output power of 300W, with extremely strong driving power, effortlessly driving a 15-inch speaker.
 
Product specifications:
Supply voltage: DC ±20-90V (recommended range: ±20V-75V; do not exceed the voltage limit; do not use a switching power supply.)
Output power: 300W (8Ω enclosure)
PCB board dimensions: 150mm x 75mm

 
 
400W
Product Features:
1. High power output, up to 400W, effortlessly drives large speakers.
2. Utilizes high-voltage audio push-pull tubes for clear sound quality and exceptional stability.
3. Wide power supply range supporting ±20-90V, adaptable to diverse power environments.
4. Powerful drive capability effortlessly handles 15-inch speakers with outstanding performance.
5. Compact dimensions facilitate easy installation in diverse audio systems.
 
Product Description:
This single-channel power amplifier board employs a 1943+5200 high-power push-pull output stage. For stereo applications, two amplifier boards are required. Circuit design employs A970/C2240 high-voltage audio dual-differential circuits with A1145/C2705 for voltage amplification. Mid-power stages utilize A1837/C4793, while the output stage features A1943/C5200 high-power transistors. Wide power supply range supporting DC ±20-90V. With sufficient power input, it delivers distortion-free 400W output. Exceptional sound quality and formidable drive capability effortlessly handles 15-inch speakers!
 
Product Specifications:
Supply Voltage: DC ±20-90V (Recommended: ±20V-75V; Do not exceed voltage limits. Switching power supplies are not compatible.)
Output Power: 400W (8Ω load)
Amplifier Board Dimensions: 195X60X45MM (LxWxH)

 
500W
Product Features:
1. Utilizes high-power 1943+5200 push-pull tubes for powerful drive and pure sound quality.
2. Supports wide DC voltage input range of ±20-90V, adapting to diverse power environments.
3. Delivers 500W distortion-free power with 750W peak output for robust performance.
4. Single-channel design; two boards required for stereo operation.
5. Effortlessly drives 15-inch speakers, ideal for high-power audio systems.
Product Description:
This single-channel power amplifier board employs a 1943+5200 high-power push-pull output stage. For stereo operation, two amplifier boards are required. Circuit design employs A970/C2240 high-voltage audio dual-differential circuits with A1145/C2705 for voltage amplification. Mid-power stages utilize A1837/C4793, while the output stage features A1943/C5200 high-power transistors. Wide power supply range supporting DC ±20-90V. With sufficient power input, it delivers distortion-free 500W output. Exceptional sound quality and formidable drive capability effortlessly handles 15-inch speakers!
Product Specifications:
Supply Voltage: DC ±20-90V (Recommended: ±20V-75V; Do not exceed voltage limits. Switching power supplies are not compatible.)
Output Power: 500W distortion-free power, 750W maximum power.
Amplifier Board Dimensions: 245mm x 60mm x 45mm
 

 
Product Listing:
1X Amplifier Board
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