{"product_id":"smsl-vmv-a1-pro-power-amplifier","title":"SMSL VMV A1 PRO Gallium Nitride Power Amplifier — 160W×2 Stereo \/ 400W Mono Class D Speaker Amp","description":"\u003cp\u003e\u003cstrong\u003eA New Kind of Power Amplifier\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe SMSL VMV A1 PRO is a compact yet commanding power amplifier built around next-generation Gallium Nitride (GaN) transistor technology. By switching at frequencies up to 1 MHz — far beyond what traditional silicon can achieve — the A1 PRO delivers ultra-clean, full-bandwidth sound with vanishingly low distortion. Whether you are driving a pair of reference stereo speakers or configuring a bridged mono setup for maximum headroom, this amplifier brings benchmark-grade performance to a desktop-friendly footprint.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGallium Nitride Technology: Faster, Cooler, Cleaner\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAt the heart of the A1 PRO lies a GaN power stage built around Infineon transistors. Gallium Nitride is widely regarded as one of the most significant advancements in power amplification in decades. Unlike conventional silicon FETs, GaN devices switch with dramatically less dead time — the micro-moments when both output transistors are momentarily off. This ultra-fast switching virtually eliminates crossover distortion, preserves transient accuracy, and runs cooler, allowing the A1 PRO to deliver substantial output power without a massive heatsink.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStereo and Mono Flexibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe A1 PRO effortlessly adapts to your system. In stereo mode it delivers 160W × 2 into 4Ω (85W × 2 into 8Ω) — more than enough for most bookshelf and floorstanding speakers. For those seeking even greater authority, switch to bridged mono mode and unlock 400W into 4Ω (250W into 8Ω). Use a pair of A1 PROs in dual-mono configuration to quadruple your power reserves and drive the most demanding loudspeaker loads with absolute control.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrecision Volume Control with the TI PGA2311\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eVolume adjustment is handled by the Texas Instruments PGA2311, a digitally controlled analog volume chip renowned for its channel matching and vanishingly low THD. If you have ever struggled with volume drift, channel imbalance at low listening levels, or noise introduced by lesser potentiometers, the PGA2311 is a genuine upgrade. It ensures precise, repeatable level control across the entire range without degrading the signal path.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAudiophile-Grade Components Throughout\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSMSL has equipped the A1 PRO with a carefully curated internal bill of materials: premium-grade capacitors, gold-plated RCA and XLR input jacks, and gold-plated speaker binding posts. These are not boutique indulgences — they directly contribute to signal integrity, long-term reliability, and consistently low contact resistance at every connection point.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBenchmark Performance, Measured and Heard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe A1 PRO's measurements speak for themselves:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTHD+N of just 0.003% — distortion remains inaudible even during complex passages\u003c\/li\u003e\n\u003cli\u003eSignal-to-noise ratio of 109 dB — the noise floor is effectively silent\u003c\/li\u003e\n\u003cli\u003eDynamic range up to 111 dB — micro-detail and macro-slam coexist without compression\u003c\/li\u003e\n\u003cli\u003eChannel separation of 75 dB — stereo imaging remains precise and stable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eDedicated Audio-Grade Power Supply\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe integrated switching power supply is purpose-built for audio performance. It delivers clean, stable energy that keeps pace with the amplifier's dynamic demands while drawing less than 0.5W in standby. You can leave the A1 PRO in your rack without worrying about heat buildup or wasted electricity.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eComprehensive Protection Suite\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSMSL has implemented full-spectrum protection circuitry covering overheat, overcurrent, and short-circuit conditions. While you are unlikely to trigger any of these safeguards during normal operation, they provide essential peace of mind — especially when running the amplifier in high-output mono mode with expensive loudspeakers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBalanced and Unbalanced Connectivity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBoth RCA (unbalanced) and XLR (balanced\/mono) inputs are provided, giving you the flexibility to integrate the A1 PRO into virtually any system topology. Gold-plated binding posts accept banana plugs, spades, or bare wire for a secure, low-impedance speaker connection.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIdeal System Pairing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe A1 PRO pairs exceptionally well with the SMSL D1 PRO DAC (or any high-resolution source with balanced outputs), creating a refined decoding-plus-amplification chain that maximizes detail retrieval and dynamic expression from your loudspeakers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e RCA (Stereo) \/ XLR (Mono BTL)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Power (Stereo):\u003c\/strong\u003e 160W × 2 @ 4Ω \/ 85W × 2 @ 8Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Power (Mono):\u003c\/strong\u003e 400W × 1 @ 4Ω \/ 250W × 1 @ 8Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD+N:\u003c\/strong\u003e 0.003%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSNR:\u003c\/strong\u003e 109 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Separation:\u003c\/strong\u003e 75 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Range:\u003c\/strong\u003e Up to 111 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Sensitivity (Stereo):\u003c\/strong\u003e 680 mV \/ 22 kΩ\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Sensitivity (Mono):\u003c\/strong\u003e 2100 mV \/ 22 kΩ\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e 40 W (Normal Volume)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandby Power:\u003c\/strong\u003e \u0026lt; 0.5 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 210 × 47.6 × 201.6 mm (W × H × D)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.56 kg \/ 3.44 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier Technology:\u003c\/strong\u003e Infineon Gallium Nitride (GaN) FET, 1 MHz Switching\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume Control:\u003c\/strong\u003e TI PGA2311 Digital Volume Chip\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e RCA \/ XLR (Mono)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Power (Stereo):\u003c\/strong\u003e 160W x 2 @ 4 Ohm \/ 85W x 2 @ 8 Ohm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Power (Mono):\u003c\/strong\u003e 400W x 1 @ 4 Ohm \/ 250W x 1 @ 8 Ohm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD+N:\u003c\/strong\u003e 0.003%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSNR:\u003c\/strong\u003e 109 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Separation:\u003c\/strong\u003e 75 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Range:\u003c\/strong\u003e Up to 111 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Sensitivity (Stereo):\u003c\/strong\u003e 680mV \/ 22kOhm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Sensitivity (Mono):\u003c\/strong\u003e 2100mV \/ 22kOhm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e 40 W (Normal Volume)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandby Power:\u003c\/strong\u003e \u0026lt; 0.5 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 210 x 47.6 x 201.6 mm (W x H x D)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.56 kg (3.44 lbs)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier Technology:\u003c\/strong\u003e Infineon Gallium Nitride (GaN) FET, 1 MHz Switching\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume Control:\u003c\/strong\u003e TI PGA2311 Digital Volume Chip\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e RCA \/ XLR (Mono)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Power (Stereo):\u003c\/strong\u003e 160W x 2 @ 4 Ohm \/ 85W x 2 @ 8 Ohm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Power (Mono):\u003c\/strong\u003e 400W x 1 @ 4 Ohm \/ 250W x 1 @ 8 Ohm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD+N:\u003c\/strong\u003e 0.003%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSNR:\u003c\/strong\u003e 109 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Separation:\u003c\/strong\u003e 75 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Range:\u003c\/strong\u003e Up to 111 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Sensitivity (Stereo):\u003c\/strong\u003e 680mV \/ 22kOhm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Sensitivity (Mono):\u003c\/strong\u003e 2100mV \/ 22kOhm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e 40 W (Normal Volume)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandby Power:\u003c\/strong\u003e \u0026lt; 0.5 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 210 x 47.6 x 201.6 mm (W x H x D)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.56 kg (3.44 lbs)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSMSL VMV A1 PRO Gallium Nitride Power Amplifier\u003c\/li\u003e\n\u003cli\u003eRemote Control\u003c\/li\u003e\n\u003cli\u003eAC Power Cable\u003c\/li\u003e\n\u003cli\u003eUser Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-vmv-a1-pro-overview-hero.png\" alt=\"SMSL VMV A1 PRO Gallium Nitride Power Amplifier - Product Overview\"\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-vmv-a1-pro-gallium-nitride-gan-technology.png\" alt=\"SMSL VMV A1 PRO - Gallium Nitride GaN Technology Explained\"\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-vmv-a1-pro-stereo-mono-and-features.png\" alt=\"SMSL VMV A1 PRO - Stereo and Mono Bridged Mode Power Output\"\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-vmv-a1-pro-volume-control-and-components.png\" alt=\"SMSL VMV A1 PRO - TI PGA2311 Volume Control and Premium Audiophile Components\"\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-vmv-a1-pro-benchmark-performance-measurements.png\" alt=\"SMSL VMV A1 PRO - Benchmark Performance Measurements THD+N SNR Dynamic Range\"\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-vmv-a1-pro-power-supply-and-protection.png\" alt=\"SMSL VMV A1 PRO - Audio-Grade Power Supply and Protection Circuitry\"\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-vmv-a1-pro-connectivity-and-system-pairing.png\" alt=\"SMSL VMV A1 PRO - RCA XLR Connectivity and System Pairing Guide\"\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-vmv-a1-pro-specifications-chart-part1.png\" alt=\"SMSL VMV A1 PRO - Specifications Chart Part 1\"\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-vmv-a1-pro-specifications-chart-part2_1.png\" alt=\"SMSL VMV A1 PRO - Specifications Chart Part 2\"\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-vmv-a1-pro-specifications-and-included-items.png\" alt=\"SMSL VMV A1 PRO - Full Specifications Table and Included Items\"\u003e\u003c\/p\u003e\n","brand":"SMSL","offers":[{"title":"Default Title","offer_id":48713817161920,"sku":"10015522","price":3958.71,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/7085\/2544\/files\/smsl-vmv-a1-pro-gallium-nitride-power-amplifier-front-view.jpg?v=1785808720","url":"https:\/\/hifichic.com\/products\/smsl-vmv-a1-pro-power-amplifier","provider":"HIFICHIC","version":"1.0","type":"link"}