Naim NAP 250 Power Amplifier

The Sixth-Generation Evolution of an Audio Icon

Inspiration drawn from 50 years of British audio heritage meets ultra-modern linear amplification. First debuting in 1975, the Naim NAP 250 is one of the most famous power amplifiers in hi-fi history. This sixth-generation New Classic 200 Series model delivers more power, ultra-fast transient response, and pristine clarity to drive demanding loudspeakers.

Housed in a precision-crafted, solid aluminum enclosure, the NAP 250 matches the exact footprint and design aesthetics of the New Classic range, complete with Naim's signature brushed black finish, an adjustable backlit logo, and a responsive heatsink architecture.

Engineering Marvel: Statement NA009 Transistors & Discrete Regulation

Under the hood, the NAP 250 utilizes custom NA009 power transistors—originally developed for Naim's flagship $300,000 Statement amplifier. Running in a pure Class AB linear topology, it delivers 100 Watts per channel into 8 Ohms and is supported by Naim’s proprietary Discrete Regulator (DR) power supply technology to ensure stable, ripple-free voltage to the output stage.

Key Performance & Technological Innovations

100W Pure Class AB Output: Delivers 100 Watts RMS per channel into 8 Ohms (190W into 4 Ohms), with transient burst delivery up to 300 Watts into 2 Ohms ($\pm28\text{A}$ peak current) to handle low-impedance dips in complex speakers.

Statement-Derived NA009 Transistors: Features 8 custom NA009 transistors (4 for power supply regulation and 4 for output stages), each mounted on ceramic insulators for ultra-low capacitive coupling.

True Balanced XLR Inputs: Upgraded with symmetrical stereo XLR inputs using newly developed, ultra-fast low-noise Class-A input buffer stages.

Soft-Start Sequence & Twin PSUs: Uses a large linear supply driven by a heavy toroidal transformer for playback, alongside an eco-friendly SMPS for 0.5W standby mode with soft-start circuit protection to prevent breaker trips.

Adaptive Heatsink & Silent Operation: Features an advanced thermal management system and an eddy current divider between speaker binding posts for enhanced signal separation.

Optical System Automation: 3.5mm optical control interlinks synchronize power states and logo illumination levels across the NSC 222 streaming preamplifier without creating electrical ground loops.

Audition the Naim Experience at Brisbane HiFi

Sound this visceral, detailed, and musically engaging needs to be heard and felt in person. From its legendary grip on low frequencies to the razor-sharp timing and dynamic authority characteristic of Naim engineering, the NAP 250 sets a benchmark for stereo power amplification.

At Brisbane HiFi, our dedicated audition spaces offer the ideal setting to experience the Naim NAP 250. Whether you are pairing it with the NSC 222 streaming preamplifier, pairing it with the NAC 332 preamplifier, or integrating it into an existing reference system, our expert audio team is here to guide your audition.

Experience Living Art: Visit the Brisbane HiFi showroom to hear the Naim NAP 250 in person, or speak with our team about custom two-channel hi-fi system integration.

Product Specifications

Type: 2-Channel Class AB Stereo Power Amplifier

Power Output: 100 W RMS per channel into 8 Ω (@0.1% THD+N) | 190 W RMS into 4 Ω (@1% THD+N)

Burst Power (2 Ω, 20ms): 300 W into 2 Ω (@1% THD+N)

Peak Current / Transient Power: $\pm 28\text{ A}$ Peak into 1 Ω (780 W Peak Power)

Frequency Response: 1.4 Hz to 100 kHz (-3 dB)

Voltage Gain: +29 dB

Signal-to-Noise Ratio (SNR): 111 dB (A-weighted, ref. 100 W into 8 Ω) | 91 dB (ref. 1 W into 8 Ω)

Total Harmonic Distortion (THD+N): 0.013% @ 2/3 full power into 8 Ω (1 kHz)

Analogue Inputs: 2 x True Balanced XLR (47kΩ) / 34kΩ Single-Ended via legacy adapter cable

Analogue Outputs: 4mm Loudspeaker Sockets

Power Consumption: <0.5W (Standby), 26W (Quiescent/Idle)

Dimensions (W x H x D): 432mm x 91.5mm x 317.5mm

Weight: 16.8 kg

What’s in the Box?

1 x Naim NAP 250 Power Amplifier

2 x XLR-to-XLR Balanced Audio Interconnect Cables

1 x Optical System Automation Cable

1 x Naim Power-Line Lite Mains Cable (Australian Plug)

Quick Start & Safety Documentation