Product details
The SK18752 chip is found only in Japanese audio products, the most used by SONY, and only a small amount in DENON. The SK18752 is much larger than the LM1875, and the package size is the same as the 5200. Because there is no official data, after repeated testing calculated SK18752 chip is the use of voltage rating should be in positive and negative about 33 v, output power of 30 w 8 Ω @. The maximum operating voltage is plus or minus 40V (this voltage is not recommended , the sound is characterized by high and medium frequencies and high intensity at low frequencies. A more pleasing ear. It should be that the Japanese made special tuning processing when developing these products with reference to LM1875. In addition to better semiconductor technology, LM1875 chip was used in a SONY amplifier, and no Japanese audio products were found to use American LM1875 circuit. (SONY&x27;s LM1875 amplifier board is attached at the back)
This circuit board reference tianlong DENON a power amplifier circuit, in addition to the use of operational amplifier front stage, the circuit board is compatible with SK18752 and LM1875 chips. We have a new batch of SK18752 chips in the original packaging, with good quality and fidelity. The price of the two finished boards is the same.
Product parameters
1. Size: 140X62mm
2. Circuit working voltage: AC 12-22V (LM1875 version)/AC 12-28V (SK18752 version)
3. This board is the finished board after installation and debugging, without radiator. The other main filter capacitance for the real goods
4. The front operational amplifier is 5532
5. One screen wire with plug (length: 30CM) as shown in the figure.
Shipping & After Sales Service
1.Normal products can be sent out in 3-7 days after paid;
2.Shipping ways
a. Expedited Shipping: DHL, UPS, or FedEx. For faster shipping or smoothly transaction, we will change the best shipping company among them.
Estimated Delivery Time: 3-7 Days
b. Standard Shipping: EMS, ePacket(U.S available only) or DHL Global Mail (Gemany available only)
Estimated Delivery Time: 5-15 Days.
c. Economy Shipping: China Post or HongKong Post Air Mail
Estimated Delivery Time:15-34 Days
NOTE:All shippments to Brazil and Russia may take about 35-70 days
3.We will prodvide tracking number in 3 days after shipment;
4.When you have any questions about our products please contact us through Aliexpress, we will reply in 24 hours.