Naim NAP 350 Monoblock Power Amplifier

Statement-Derived Monoblock Engineering for Demanding Loudspeakers

Inspiration drawn from 50 years of British audio heritage meets ultra-modern linear amplification. The Naim NAP 350 is Naim’s flagship New Classic monoblock power amplifier. Engineered to drive complex and demanding reference loudspeakers, it delivers high power, razor-sharp transient speed, and effortless dynamic control.

Housed in a precision-crafted, solid aluminum chassis with integrated heatsinks, the NAP 350 features Naim's signature brushed finish, an adjustable backlit logo, and a fanless silent cooling architecture designed to operate quietly without disrupting delicate audio passages.

Engineering Marvel: Statement NA009 Output Stage & Fully Regulated DR Power

Under the hood, the NAP 350 utilizes matched pairs of Naim’s custom NA009 power transistors—originally developed for the flagship $300,000 Statement amplifier. Running in a pure Class AB linear topology, each monoblock is backed by fully discrete, low-noise Discrete Regulator (DR) power supplies dedicated to both the gain stage and input buffers, guaranteeing stable and ripple-free voltage.

Key Performance & Technological Innovations

Reference Monoblock Power: Delivers 175 Watts continuous RMS into 8 Ohms and 345 Watts continuous into 4 Ohms, with peak transient delivery reaching up to 1.7 kW (+/-42A peak current) to handle low-impedance dips in complex speaker crossover networks.

Statement-Derived NA009 Transistors: Utilizes 8 custom-designed NA009 transistors (4 for the power supply regulators, 4 for the output stage), each mounted on ceramic insulators to reduce capacitive coupling.

Balanced XLR Input Architecture: Features a true balanced 47kΩ XLR input utilizing custom Class-A input buffer stages for low noise and maximum compatibility across reference preamplifiers.

Soft-Start Sequence & Twin PSUs: Incorporates two internal power supplies—a large linear supply driven by a massive toroidal transformer for playback, plus an eco-friendly SMPS for 0.5W standby operation with soft-start circuit protection.

Optical System Automation: Optical 3.5mm system control interlinks synchronize power states and logo illumination levels across the NSS 333 streamer and NAC 332 preamplifier without creating electrical ground loops.

Thermally Conductive Casing & Party-Proof Cooling: Combines thick 20mm aluminum billet front panels, heavy-duty side-mounted heatsinks, and an adaptive temperature management system designed for continuous high-output playback.

Audition the Naim Experience at Brisbane HiFi

Sound this visceral, detailed, and musically engaging needs to be heard and felt in person. From the effortless low-frequency grip on demanding floorstanding speakers to the lightning-fast timing characteristic of Naim engineering, the NAP 350 sets a benchmark for modern reference amplification.

At Brisbane HiFi, our dedicated audition spaces offer the ideal setting to experience a pair of Naim NAP 350 monoblocks. Whether you are completing a full New Classic 300 Series stack (paired with the NSS 333 streamer and NAC 332 preamplifier) or upgrading your reference power amplification, our expert audio team is here to guide your audition. 

Experience Living Art: Visit the Brisbane HiFi showroom to hear a pair of Naim NAP 350 monoblocks in person, or speak with our team about custom two-channel hi-fi system integration.

Product Specifications

Type: Monoblock Linear Class AB Power Amplifier

Power Output: 175 W RMS into 8 Ω (@0.1% THD+N) | 345 W RMS into 4 Ω (@1% THD+N)

Burst Power (2 Ω, 20ms): 610 W into 2 Ω (@1% THD+N)

Peak Current / Transient Power: $\pm 42\text{ A}$ Peak into 1 Ω (1.7 kW Peak Power)

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

Voltage Gain: +29 dB

Signal-to-Noise Ratio (SNR): 114 dB (A-weighted, ref. 175 W into 8 Ω) | 91 dB (ref. 1 W into 8 Ω)

Total Harmonic Distortion (THD+N): 0.006% @ 2/3 full power into 8 Ω (1 kHz)

Analogue Inputs: 1 x True Balanced 47kΩ XLR (1 x 34kΩ Single-Ended via legacy adapter cable)

Power Consumption: <0.5W (Standby), 24W (Quiescent/Idle), 353W (Rated Output)

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

Weight: 16.5 kg per monoblock

What’s in the Box?

1 x Naim NAP 350 Monoblock Power Amplifier

1 x Naim XLR-to-XLR Balanced Audio Interconnect Cable

1 x Optical System Automation Cable

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

Quick Start & Safety Documentation