Instruction: Determine the relevance between the query and the product title provided, and select your response from one of the available options.

Input:
Query: precision power amplifier
Product: PRECISION POWER - iON Series i520.4 Class D 4-Channel 520W Full-Range Digital Stereo Amplifier with MOSFET Power Supply

Options:
A: The product is relevant to the query, and satisfies all the query specifications.
B: The product is somewhat relevant. It fails to fulfill some aspects of the query but the product can be used as a functional substitute.
C: The product does not fulfill the query, but could be used in combination with a product exactly matching the query.
D: The product is irrelevant to the query.
Answer: A: The product is relevant to the query, and satisfies all the query specifications.