Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Samsung HT-E355K Multi Region 5.1 Channel Karaoke DVD Home Theater System 110-240 Volt
Product description: Bring the fun of karaoke to your home and your music collection. You can sing along with all the tracks you love on CD, MP3 or DVD. Sophisticated voice cancellation technology removes the recorded singer's voice, leaving only the background music. If you add a microphone, you can give your own voice the benefit of great sound quality and truly complement the music. With My Karaoke, you are the star of the show.With ConnectShare Movie, simply plug your USB memory drive or HDD into your Home Entertainment System and enjoy the content you love. ConnectShare Movie feature reduces the number of devices needed to view, listen and play your favourite content. Play music directly through the speakers of your Home Entertainment System and transfer movies and photos to the big screen. Now, experience a wide variety of content from the comfort of your living room. Your Samsung Home Entertainment System is designed to deliver a deeper bass sound. The bass emits the same watt as before, but delivers a deeper and richer sound. The vibrations radiate through the speaker system to ensure all low notes are produced. The powerful sound will take your entertainment to the next level and make you feel as if you were in the theatres. Enjoy powerful sounds with Samsung's Home Entertainment Systems.
Product feature: Multi Region Home Theater System with Dual Voltage (110-240 Volt) and Karaoke, DIVX (including XVID) Yes JPEG Yes MP3 Yes WMA, WMV (1/2/3/7) Yes, # of Sound Modes (DSP) 8 Dolby Digital Yes Dolby Pro Logic II Yes DTS No Giga Sound Yes MP3 Enhancer Yes Power Bass Yes Smart Volume Yes User EQ Yes Local EQ Yes, Crystal Amplifier Plus Yes USB Recording AUX, Radio, CD, Mic
Product brand: Samsung
Target attributes: Configuration
Answer: attribute: configuration
value: 5.1 channel
source: product title