Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: FosPower Audio Cable (10 FT), Stereo Audio 3.5mm Auxiliary Short Cord Male to Male Aux Cable for Car, Apple iPhone, iPod, iPad, Samsung Galaxy, HTC, LG, Google Pixel, Tablet & More
Product feature: Connectors: 1 mini-stereo (3.5mm) male to mini-stereo (3.5mm) male, 24k gold plated connectors resist corrosion and reduce tarnish, Copper braided and aluminum foil shielding provides cable flexibility and greatly reduces undesired EMI/RFI interference, Polyethylene Foam (PF) dielectric insulator greatly minimizes signal loss, Tin plated copper core reduces oxidation and increases wire life
Product price: $8.99
Product brand: FosPower
Target attributes: Audio Channels
Answer: attribute: audio channels
value: stereo
source: product feature
attribute: audio channels
value: stereo
source: product title