Like the flagship Naim NAP 500, the NAP 300 is a stereo two-chassis amplifier, one box containing the audio amplifier and the second housing the individually regulated power supply. Improved earthing arrangements have resulted in an entirely new circuit topology built on a very high quality, anti-resonance main audio circuit board. The NAP 300 uses the same 007 transistors that were custom-designed for the NAP 500. These outstanding components each provide up to 80 Amps and 350 Watts, negating the need to use parallel pairs of transistors (which always have a negative effect on sound). Additional 007 transistors are used in the fully regulated power supply, ensuring the very best performance.

Anti-vibration, resonance-controlling feet serve to protect the sensitive internal components from resonance and microphonic vibration.

A variable speed, virtually noiseless cooling fan is mounted on a large internal heat sink providing long-term stability and the ability to swing a massive 500 VA on transients. The NAP 300 is stable into any load and able to drive a 2-Ohm load for long periods of time

The Naim NAP 300 delivers awesome power without sacrificing any speed or agility to provide awe-inspiring levels of detail, ambient information and musicality