Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Hifonics BRX1600.1D Brutus Vehicle Mono Subwoofer Amplifier
Product description: BRX series amplifiers. With an illuminated Hifonics logo, plus the lighted connectors and blue wash of light from the underside of the heatsink, even from a distance judges and friends will know, your system defines Power From The Gods. Brutus BRX is packed with features to enhance sound quality and power.
Product feature: Molded and angled ILLUMINATED Terminals for stress free installation access., Accu-Cross crossovers and adjustments for sound shaping., Ultra-Fi MOSFETS, NGSD Next Generation Super D-Class for extremely efficient system., 1 x 600 @ 4 Ohms, 1 x 1200 @ 2 Ohms, 1 x 1600 WATTS @ 1 Ohm
Product brand: Hifonics
Target attributes: RMS Power Rating
Answer: attribute: rms power rating
value: None
source: None