Description
KSA100MKII 450W+450W Power Amplifier Board Hifi Power Amp Board
Features:
Feedback capacitor
- Audiophile axial audio capacitor
Quality transistor
- All the transistors are imported
- And the same-level error ≤ 3% precision matching
Board version
- The latest optimized version
- Optimized core circuit parameters
Resistor usage
- Choose 0.25W/0.5W/1W/2W/5W resistors with different powers according to the current
Capacitor quality
- Imported audiophile audio capacitors
Resistor and adjustable potentiometer
- Using military resistors
- Imported gray BI adjustable potentiometer
Bipolar transistor model
- MJE15034/MJE15035 for ON Semiconductor
Protect the circuit
- Midpoint offset, switch squelch
- Over-current and over-temperature protection
Relay to protect speaker
- Adopt imported 30A sealed relay
Independent power supply
- The current and voltage stages can be independently powered
High current terminal
- Upgraded to bigger and stronger terminals
Bipolar transistor heat sink
- Upgrade to a larger plum-shaped heat sink
- Added 7812 regulator heat sink
More Details:
1. The first-stage decoupling capacitor; the output and power terminals are all high-current terminals
2. Bipolar transistor MJ15034/MJ15035 for ON Semiconductor; military resistors are used
3. 30A sealed relay enables larger current. Sealed design ensures that it does not get wet, the contacts are not easily oxidized, its service life is longer, and the performance is more stable
4. Quality feedback capacitors are audiophile capacitors; axial capacitors for Siemens and CBB capacitor for Sprague4. Quality feedback capacitors are audiophile capacitors; axial capacitors for Siemens and CBB capacitor for Sprague
5. Adjustable potentiometer uses original BI gray adjustable potentiometer; the small capacitors are imported capacitors
6. On-board speaker protection circuit with over-current and overheating protection, and without noise when it turns on/off
7. The circuit structure is excellent referring to the circuit for KERLL in the United States, and it is used with premium components to ensure better sound
8. Bipolar transistor MJ15024/MJ15025 for ON Semiconductor, the tubes of the entire board are precisely matched to the same polarity
Specifications:
- Name: KSA100MKII Class A Amplifier Board
- Frequency Response: 20-20KHz
- Signal-to-noise ratio: 100dB
- Output impedance: 4-8Ω
- Total harmonic distortion: ≤ 0.01%
- Output rated power: Class A 100W+100W (4Ω); Class AB 450W+450W (4Ω)
- Quiescent operating current: adjustable
- Signal input method: RCA unbalanced
- Finished board: 280mm (length)*113mm (width behind with heat dissipation guide plate)*45mm (height)
- Speaker protection circuit: with perfect (mute, mid-point offset, over-current, over-temperature) protection circuit during startup/shutdown
- Power supply range: dual DC 32-60V plus AC 12-18V; recommended dual DC 45V plus AC 12V
- Power supply scheme: It is recommended to use two transformers with a capacity of more than 500W to supply power independently for each channel
- Power supply mode: current and voltage levels can be independently powered or current and voltage levels share a set of power supplies
- PCB Dimensions: 280 x 90 x 2mm (LxWxThickness)
Package Included:
- 1 x Amplifier Board
- 1 x Set of Copper Pillars and Screws
- 2 x Temperature Control Tubes
- 1 x User Manual
Features:
Feedback capacitor
- Audiophile axial audio capacitor
Quality transistor
- All the transistors are imported
- And the same-level error ≤ 3% precision matching
Board version
- The latest optimized version
- Optimized core circuit parameters
Resistor usage
- Choose 0.25W/0.5W/1W/2W/5W resistors with different powers according to the current
Capacitor quality
- Imported audiophile audio capacitors
Resistor and adjustable potentiometer
- Using military resistors
- Imported gray BI adjustable potentiometer
Bipolar transistor model
- MJE15034/MJE15035 for ON Semiconductor
Protect the circuit
- Midpoint offset, switch squelch
- Over-current and over-temperature protection
Relay to protect speaker
- Adopt imported 30A sealed relay
Independent power supply
- The current and voltage stages can be independently powered
High current terminal
- Upgraded to bigger and stronger terminals
Bipolar transistor heat sink
- Upgrade to a larger plum-shaped heat sink
- Added 7812 regulator heat sink
More Details:
1. The first-stage decoupling capacitor; the output and power terminals are all high-current terminals
2. Bipolar transistor MJ15034/MJ15035 for ON Semiconductor; military resistors are used
3. 30A sealed relay enables larger current. Sealed design ensures that it does not get wet, the contacts are not easily oxidized, its service life is longer, and the performance is more stable
4. Quality feedback capacitors are audiophile capacitors; axial capacitors for Siemens and CBB capacitor for Sprague4. Quality feedback capacitors are audiophile capacitors; axial capacitors for Siemens and CBB capacitor for Sprague
5. Adjustable potentiometer uses original BI gray adjustable potentiometer; the small capacitors are imported capacitors
6. On-board speaker protection circuit with over-current and overheating protection, and without noise when it turns on/off
7. The circuit structure is excellent referring to the circuit for KERLL in the United States, and it is used with premium components to ensure better sound
8. Bipolar transistor MJ15024/MJ15025 for ON Semiconductor, the tubes of the entire board are precisely matched to the same polarity
Specifications:
- Name: KSA100MKII Class A Amplifier Board
- Frequency Response: 20-20KHz
- Signal-to-noise ratio: 100dB
- Output impedance: 4-8Ω
- Total harmonic distortion: ≤ 0.01%
- Output rated power: Class A 100W+100W (4Ω); Class AB 450W+450W (4Ω)
- Quiescent operating current: adjustable
- Signal input method: RCA unbalanced
- Finished board: 280mm (length)*113mm (width behind with heat dissipation guide plate)*45mm (height)
- Speaker protection circuit: with perfect (mute, mid-point offset, over-current, over-temperature) protection circuit during startup/shutdown
- Power supply range: dual DC 32-60V plus AC 12-18V; recommended dual DC 45V plus AC 12V
- Power supply scheme: It is recommended to use two transformers with a capacity of more than 500W to supply power independently for each channel
- Power supply mode: current and voltage levels can be independently powered or current and voltage levels share a set of power supplies
- PCB Dimensions: 280 x 90 x 2mm (LxWxThickness)
Package Included:
- 1 x Amplifier Board
- 1 x Set of Copper Pillars and Screws
- 2 x Temperature Control Tubes
- 1 x User Manual
Payment Terms
1.We accept PayPal only.
2.All major credit cards are accepted through secure payment processor PayPal.
3.Payment must be received within 7 business days of auction closing.
4.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay.
2.All major credit cards are accepted through secure payment processor PayPal.
3.Payment must be received within 7 business days of auction closing.
4.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay.
Shipping Terms
- For remote regions, we will charge your extra shipping costs. Usually it cost about 35USD-50USD. We will contact you after your payment. Thanks for your understanding.
Return Terms
1. If you receive defective item, please kindly notify us within 14 days. We will guide you the returning instruction for replacement or refund.
2. If you purchased in improper condition, please NOTE that the sipping and handling fee will not be refund, all return shipping fee should paid by the buyer unless item DOA.
3. We reserve the right to refuse any returns for objective reasons.
2. If you purchased in improper condition, please NOTE that the sipping and handling fee will not be refund, all return shipping fee should paid by the buyer unless item DOA.
3. We reserve the right to refuse any returns for objective reasons.
Custom Duties & Taxes
1. Import duties, taxes, and charges are not included in the item price or postage cost. These charges are the buyer's responsibility.
2. Avoiding some unnecessary trouble, please check with your country's customs office to inform us what we should declare its value before shipping.
2. Avoiding some unnecessary trouble, please check with your country's customs office to inform us what we should declare its value before shipping.
Feedback
1. If you are dissatisfied for any reason, please don't be quick to leave us neutral or negative feedback. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers.
2. If you are satisfied with the product you received, please kindly leave us a positive feedback and 5 star DSR. If there is any problem of your order, please feel free to contact us firstly, we are responsible and credible seller, will follow it for you asap.
2. If you are satisfied with the product you received, please kindly leave us a positive feedback and 5 star DSR. If there is any problem of your order, please feel free to contact us firstly, we are responsible and credible seller, will follow it for you asap.
Am 17.09.2022 hat der Verkäufer die folgenden Angaben hinzugefügt:
Am 10.01.2024 hat der Verkäufer die folgenden Angaben hinzugefügt: