Naim NAP 250 Power Amplifier

The Naim NAP 250 Power Amplifier is a dual-channel stereo power amplifier housed in a resonance-damping brushed aluminium chassis, engineered to deliver authoritative speaker drive for high-performance two-channel music systems. Now in its sixth generation as a foundational element of the Naim Audio 200 Series, this design outputs a continuous 100 watts of Class A/B power per channel into 8 ohms, doubling dynamic stability down into difficult loads. Its dual-mono architecture and balanced signal paths ensure uncoloured sound reproduction, maintaining transient precision and spatial depth across all source material.

The Hi-Fi Centre Team Take

In daily listening environments, the NAP 250 distinguishes itself through exceptional thermal stability and effortless acoustic grip, even during sustained, high-volume sessions. The amplifier operates with virtually undetectable background noise, allowing delicate instrumental decay and subtle micro-dynamics to emerge cleanly into the room. Its substantial aluminium casing and understated illuminated badge impart a focused, industrial presence that fits naturally into any domestic living space. It offers music lovers consistent, unfaltering drive that reveals the true character and rhythmic timing of complex recordings.

Key Acoustic and Design Features

• Statement-Derived NA009 Transistors: High peak current capacity handles abrupt dynamic crescendos with total acoustic composure.
• Discrete Regulator Technology: Ultra-clean DC power feeds internal stages to eliminate floor noise and preserve low-level resolution.
• Resonance-Resistant Enclosure: Heavy brushed aluminium casework suppresses mechanical vibration and shields internal pathways from electromagnetic fields.
• Authorized Dealer Assurance: Hi-Fi Centre is an Authorized Dealer, providing full manufacturer warranty coverage, expert product guidance, and post-purchase technical support.

Technical Specifications

• Brand: Naim Audio
• Model: NAP 250 (200 Series)
• Amplifier Type: Two-channel stereo power amplifier
• Amplifier Class: Class A/B
• Power Output: 100 W per channel into 8 Ω (0.1% THD+N), 190 W per channel into 4 Ω (1% THD+N)
• Burst Power: 300 W into 2 Ω (1% THD+N, 1 kHz for 20 ms)
• Frequency Response: 1.4 Hz – 100 kHz (-3 dB)
• Analogue Inputs: 2 x True balanced XLR (47 kΩ balanced, 34 kΩ single-ended with adapter)
• Loudspeaker Outputs: 4 mm sockets
• Signal-to-Noise Ratio: 111 dB (Ref. 100 W 8 Ω A-weighted), 91 dB (Ref. 1 W 8 Ω A-weighted)
• Total Harmonic Distortion + Noise: 0.013% at 2/3 full power into 8 Ω at 1 kHz
• Crosstalk: 60 dB
• Power Consumption: 26 W (Idle), <0.5 W (Standby)
• Dimensions (H x W x D): 9.15 cm x 43.2 cm x 31.75 cm
• Weight: 16.8 kg

Frequently Asked Questions

• Which preamplifiers are compatible with the Naim NAP 250?
  While optimised for the Naim NSC 222 streaming preamplifier via true balanced XLR connections, the NAP 250 can also be integrated with legacy Classic Series preamplifiers or third-party sources using dedicated balanced or single-ended adapter cables.
• Can the NAP 250 drive low-impedance or demanding loudspeakers?
  Yes. With its dual-mono design, Statement-derived NA009 transistors, and discrete regulation, the NAP 250 delivers 100 watts into 8 ohms, 190 watts into 4 ohms, and burst stability up to 300 watts into 2 ohms, ensuring composed control across challenging loads.
• What speaker cable terminations are required?
  The amplifier is equipped with standard 4 mm sockets accepting high-grade 4 mm banana plugs or Naim twin-pin speaker plugs. High-quality low-capacitance speaker cables, such as Naim NAC A5, are recommended for optimal performance.
• How is heat managed during sustained listening sessions?
  The NAP 250 features an intelligent, ultra-quiet variable-speed cooling fan alongside substantial aluminium heatsinks, engaging automatically only during heavy thermal demand to protect internal circuitry without interfering with acoustic performance.