The Naim NAP 90/3 is a power amplifier from Naim Audio, recognized for its performance in delivering high-quality sound. It is designed to work seamlessly with Naim's preamplifiers, particularly the NAC 92. Users often remark on the amplifier's excellent pace, rhythm, and timing (PRT), contributing to an engaging listening experience that faithfully reproduces music with natural tonality. It showcases a detailed soundstage, with particularly impressive percussion and a clean bass response. The NAP 90/3 is constructed robustly, providing a feeling of durability and reliability. In terms of aesthetics, the NAP 90/3 marked a shift from the traditional shoebox style to a more contemporary design which some long-term users have found less appealing. This amplifier operates effectively in a cohesive Naim system, highlighting the importance of system matching for optimal sound quality. It has been noted that the NAP 90 can sometimes reveal flaws in poorly recorded material, highlighting its resolution capabilities. While it may be considered entry-level in the Naim lineup, many users appreciate it for its ability to deliver great sound, making it a good option for secondary systems or for those starting their journey into high-fidelity audio.