Electronics: Njm386D, Lm386 And Salon Battery Supply Audio Mono Amplifier Module Product Details Low voltage audio power amplifier module, based on NJM386D (LM386) IC design. This item has been assembled, and electrical test passed. 105? electrolytic capacitors, metal film capacitor and polyester film capacitor. FR-4 fiber glass material PCB (Double layer). Terminal blocks, easy connection wire. Volume potentiometer with power switch. Applications: AM-FM radio amplifiers. Portable amplifiers. Battery power supply amplifiers. TV sound systems, ect. Specifications: Voltage Gain : JP1 Open 26dB, JP1 Close 46 dB. Input Resistance : 10K ohm (Volume Max.) Operating Power Supply Voltage : DC 4 - 12V. PCB Size : 50 x 32 mm (1.97 x 1.26 inch) PCB Thickness : 1.6mm (0.063 inch) Maximum Height : 24mm (0.95 inch) Other Electrical Parameters, Please Read IC datasheet. NJM386 IC Datasheet: Low voltage audio power amplifier module, based on NJM386D ( LM386 ) IC design. Voltage Gain : JP1 Open 26dB, JP1 Close 46 dB. Input Resistance : 10K ohm (Volume Max.) Operating Power Supply Voltage : DC 4 - 12V. PCB Size : 50 x 32 mm ( 1.97 x 1.26 inch ) PCB Thickness : 1.6mm ( 0.063 inch ) Maximum Height : 24mm ( 0.95 inch ) Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.