SMSL Power Amplifier VMV A1 Pro

VMV A1 Pro GaN 400W power Amplifier

 

 

The SMSL VMV A1 Pro is a compact desktop power amplifier using Gallium Nitride (GaN FET) technology to deliver up to 160W per channel. It features Texas Instruments PGA2311 volume control, versatile stereo or mono bridge operating configurations, and an aluminum enclosure weighing 3.44 lbs.

 

 

Infineon’s latest GaN FET, with a switching frequency of up to1MHz, makes the full-band sound more delicate;

TI's advanced volume chip PGA2311 is used, with more steps volume control and ultra-low distortion;

Stereo pure amplifier pass-through mode, with D1pro DAC & amp preamp, the sound is more direct and pure.

XLR input mono mode (volume is not adjustable), 2 units form

Stereo, power is increased by 4 times, and high-power speakers are easily driven.

A large number of audio-grade components are used to enhance the subjective listening experience;

High-quality gold-plated input and output sockets;

Complete overheating, overcurrent and other protection circuits;

Built-in high-quality, high-power audio grade switching power supply.

 

Core Specifications

• Amplification Tech: Infineon GaN FET (up to 1MHz switching frequency)
• Volume Chip: Texas Instruments PGA2311
• Stereo Output Power: 160W x 2 into 4Ω, 85W x 2 into 8Ω
• Mono BTL Mode Power: 400W x 1 into 4Ω, 250W x 1 into 8Ω
• Total Harmonic Distortion (THD+N): 0.003%
• Signal-to-Noise Ratio (SNR): 109 dB
• Channel Separation: 75 dB
• Dimensions: 210 x 47.6 x 201.6 mm (W x H x D)
• Weight: 1.56 kg (3.44 lbs)

 

 

Inputs and Outputs

• Inputs: 1x Stereo RCA, 1x XLR (utilized for mono mode)
• Outputs: Standard speaker binding posts (supports banana plugs, spades, bare wire)
• Power Supply: Built-in high-power audio-grade switching power supply (typical consumption ~40W, standby <0.5W)

 

 

Operating Modes & Features

• Stereo Integrated Mode: Uses internal PGA2311 volume control via the front knob or remote.
• Pure Pass-Through Mode: Bypasses internal attenuation for use with an external dedicated pre-amplifier/DAC.
• Mono Bridge (BTL) Mode: Combines two A1 Pro units using XLR inputs to quadruple the power output for high-load speakers.
• Safety Protections: Complete built-in circuits for overheating and overcurrent protection