The Matrix Audio NA-1 Headphone Amplifier utilises a fully discrete, pure Class A balanced topology to provide immense driving authority and clean analogue precision. Operating as a reference-grade hub among high-performance headphone amplifiers, the unit pairs four independent amplification channels with high-voltage power rails to maintain complete control over difficult loads. Listeners seeking pure, uncoloured acoustic reproduction will appreciate how effortlessly it preserves delicate musical textures, micro-dynamics, and natural tonality across every track.Pure Class A Driving Authority:Equipped with a pure Class A architecture and a dedicated linear power supply, the Matrix Audio NA-1 provides up to 18 W of power into 33 ohms and 4.5 W into 300 ohms via balanced outputs. This generous power reserve ensures that demanding planar magnetic headphones and high-impedance dynamic models perform with full-bodied bass, expansive dynamic contrast, and zero signal strain. The amplifier maintains low distortion and a quiet background, letting you experience pure musical energy without distraction.Versatile Preamplifier Control:Beyond driving headphones, the Matrix Audio NA-1 serves as a high-calibre analogue preamplifier for active desktop speakers or external power amplifiers. It features dedicated balanced XLR and single-ended RCA inputs alongside corresponding preamplifier outputs. Selectable gain settings enable seamless level matching between sensitive monitors and power-hungry speakers, while a vertically layered circuit design physically isolates the power and preamp stages to keep interference to an absolute minimum.Precision Aluminum Construction:The unit is housed in a precision-machined aluminum chassis that serves both functional and aesthetic purposes. The dense aluminum enclosure shields delicate internal audio circuits from external electromagnetic noise and dissipates thermal energy generated by pure Class A operation. Combined with multi-layer isolation feet and an ALPS motor-driven quad potentiometer, the volume adjustment and physical presence feel substantial and finely tuned.Authorized Dealer:We are an authorized dealer for Matrix Audio, offering product knowledge and dedicated assistance throughout your audio journey. Purchasing from a trusted brand partner ensures your purchase includes the full manufacturer's warranty, giving you complete reassurance as you build your dream listening environment.Key Features & Listener Benefits: Pure Class A Circuitry: Delivers smooth, lifelike sound and rich musical warmth across all listening levels without harshness. High-Power Balanced Output: Drives demanding planar magnetic and high-impedance headphones with up to 18 W of headroom. Preamplifier Functionality: Controls active monitors or separate power amplifiers directly via balanced XLR and RCA connections. Dual-Layer Circuit Isolation: Physically separates sensitive audio pathways from the power supply for a pitch-black, low-noise background. Precision Aluminum Chassis: Shields internal audio components from electrical interference while efficiently dispersing operational heat. Dual Gain Settings: Allows precise output adjustments to suit sensitive in-ear monitors or heavy-load full-size headphones. Technical Specifications: Circuit Topology: Fully discrete, pure Class A, fully balanced architecture Analogue Inputs: 1 x balanced XLR pair, 2 x single-ended RCA pairs Headphone Outputs: 1 x 4-pin XLR balanced, 1 x 4.4 mm Pentaconn balanced, 1 x 6.35 mm single-ended Preamplifier Outputs: 1 x balanced XLR pair, 1 x single-ended RCA pair Balanced Output Power: 18 W @ 33 Ω, 4.5 W @ 300 Ω Single-Ended Output Power: 7 W @ 33 Ω, 1.2 W @ 300 Ω Headphone Gain: +17 dB (Low Gain), +23 dB (High Gain) Preamplifier Gain: +15 dB (Low Gain), +21 dB (High Gain) Volume Control: ALPS Type 27 quad-unit motor-driven potentiometer Power Supply: 80 W fully encapsulated toroidal transformer with 39,000 µF capacitor array Chassis Material: CNC-machined aluminum Dimensions (W x D x H): 330 mm x 275 mm x 97 mm Weight: 6.16 kg Frequently Asked Questions:Can the Matrix Audio NA-1 be used as a standalone preamplifier?Yes. The NA-1 features dedicated balanced XLR and single-ended RCA preamplifier outputs alongside selectable gain settings, allowing it to function as a reference-grade analogue preamplifier for active studio monitors or external power amplifiers.Does the Matrix Audio NA-1 include a built-in digital-to-analogue converter (DAC)?No. The NA-1 is a dedicated pure analogue headphone amplifier and preamplifier engineered without digital processing stages to avoid signal interference. It pairs seamlessly with external standalone DACs or analogue source components via its balanced XLR and single-ended RCA inputs.Why does the amplifier chassis become warm during operation?The NA-1 utilises pure Class A amplification circuitry, which draws continuous bias current to eliminate crossover distortion and deliver peak fidelity. The dense CNC-machined aluminium chassis is designed to act as an effective heatsink, safely drawing and dispersing thermal energy away from the internal audio components.What headphone terminations are supported?The NA-1 provides three front-facing output options: a 4-pin XLR balanced connector, a 4.4 mm Pentaconn balanced jack, and a standard 6.35 mm single-ended socket, accommodating virtually all modern high-end headphone cables without requiring adaptors.
