The Alfatron ALF-250W-UB is a powerful Class-D commercial mixer amplifier designed for distributed audio and paging applications. Featuring built-in Bluetooth streaming, USB MP3 playback, FM radio tuner, microphone inputs, and 70V/100V speaker support, the ALF-250W-UB delivers reliable performance for retail stores, restaurants, classrooms, offices, and commercial audio systems.

With 250 watts of output power, microphone priority control, and integrated protection circuitry, this amplifier is an excellent solution for background music and paging installations. 

High-Power 250W Commercial Amplifier

The ALF-250W-UB is built for professional distributed audio systems:

• 250W Class-D amplifier
• Supports 70V, 100V, and 4-16 Ohm speaker systems
• Efficient low-heat amplifier design
• Ideal for commercial paging and background music

Bluetooth, USB & FM Audio Playback

Integrated media playback options provide flexible source selection:

• Bluetooth wireless audio streaming
• USB MP3 playback support
• Built-in FM radio tuner
• Includes remote control for convenient operation

Flexible Audio & Microphone Inputs

Designed for commercial paging and announcements:

• 2 microphone inputs
• Front panel microphone input with priority function
• Rear balanced XLR microphone input with phantom power
• 2 RCA line inputs
• RCA line output for additional audio integration
• EMC emergency input support

Priority Paging & Audio Controls

Simplified commercial audio management:

• Priority hierarchy:
  • EMC > MIC1 > Other sources
• Independent controls for:
  • Microphone volume
  • AUX volume
  • Bass
  • Treble
  • Master volume

Built-In Protection Features

Engineered for dependable long-term performance:

• Short-circuit protection
• Clip protection
• Overload protection
• High-temperature protection
• LED indicators for:
  • Power
  • Signal
  • Clip
  • Protect

Ideal Applications

Perfect for commercial and public audio installations:

• Retail stores
• Restaurants
• Coffee shops
• Schools and classrooms
• Offices
• Commercial paging systems

Technical Specifications

• Rated Power: 250W
• Amplifier Type: Class-D
• Speaker Outputs:
  • 70V
  • 100V
  • 4-16 Ohms
• Bluetooth: Yes
• FM Radio: Yes
• USB MP3 Playback: Yes
• Inputs:
  • 2 Mic inputs
  • 2 RCA line inputs
  • 1 EMC input
• Outputs:
  • 1 RCA line output
• Power Supply:
  • AC110-220V
  • 24V backup power input

Key Features

• 250W commercial mixer amplifier
• Bluetooth audio streaming
• USB MP3 playback
• FM tuner built-in
• 70V/100V speaker support
• 4-16 Ohm compatibility
• Priority paging support
• Phantom power microphone input
• Emergency EMC input
• Compact Class-D design

Best 250W Mixer Amplifier for Commercial Audio Systems

The Alfatron ALF-250W-UB is ideal for commercial installations that require higher output power for larger speaker systems and multi-zone environments. Its combination of Bluetooth streaming, microphone paging, and 70V/100V distributed audio support makes it perfect for restaurants, retail stores, schools, and office spaces.

The compact Class-D design provides efficient operation while integrated protection features help ensure reliable day-to-day performance.