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Ashly FA Series FA250.4 4-Channel 250W Compact Class D Power Amplifier

SKU: ASFA2504120V MFR: FA250.4-120V-U
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Key Features

  • Experience crystal-clear audio with this Ashly power amplifier, boasting low distortion for pristine sound.
  • Drive multiple speakers simultaneously with this 4-channel power amplifier, perfect for versatile audio setups.
  • Enjoy reliable performance with this Class D amplifier, designed for consistent output in any environment.
  • Optimize sound with adjustable input sensitivity, ensuring seamless integration with various audio sources.
  • This compact power amplifier delivers high power output, ideal for installations where space is limited.
  • Easily manage sound in commercial spaces using the 70V/100V output, offering flexible speaker configurations.
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Special Order?Estimated to Ship: 08/16/2025
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Ashly FA Series Specifications

Configuration

Configuration

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  • Configuration

    Pre-BTL

  • Number of Channels

    4

Output Power

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  • 2 Ohm

    Not Recommended

  • 4 Ohm

    250W

  • 8 Ohm

    250W

  • 16 Ohm

    250W

  • 70V

    250W

  • 100V

    250W

  • Power Sharing

    No

  • Frequency Response

    20HZ-20kHz

  • S/N Ratio

    >102dB (20Hz20kHz, unweighted)

  • Input Sensitivity

    -10dBV (0.316Vrms)/+4dBu
    (1.228Vrms), Selectable

  • THD + Noise

    < 0.5%

  • Damping Factor

    >250 (8 Ohms < 1kHz)

Power Consumption

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  • Sleep

    <0.5

  • Idle Lo-Z

    25

  • Idle Hi-Z

    30

  • 1/8 Power (4 Ohms)

    196

  • 1/8 Power (8 Ohms)

    186

  • 1/8 Power (70V)

    191

  • 1/8 Power (100V)

    181

Thermal Dissipation

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  • Sleep mode

    <1.7

  • Idle Lo-Z (no signal)

    86

  • Idle Hi-Z (no signal)

    103

  • 1/8 max power, 4 Ohm

    243

  • 1/8 max power, 8 Ohm

    209

  • 1/8 max power, 70V

    226

  • 1/8 max power, 100V

    191

Voltage Gain

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  • Low Z @ -10dBV

    43.1

  • Hi-Z 70V @-10dBV

    46.9

  • Hi-Z 100V @ -10dBV

    49.1

  • Low Z @ +4dBu

    31.3

  • Hi-Z 70V @ +4dBu

    35.1

  • Hi-Z 100V @ +4dBu

    37.3

I/O Features

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  • HPF

    Yes. 80Hz (in HiZ Mode, non-defeatable)

  • Clip Limiter

    Yes (at clip threshold +24dBu, non-defeatable)

Connectors

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  • Input

    Removable Euroblock/Balanced 6-pole (pr)

  • Output

    Removable Euroblock/2-pole (per ch)

  • GPIO

    Removable Euroblock/ 6-pole
    DC volume per channel pair
    Standby, Fault Out

  • USB

    USB-C for Firmware update

DIP Switches

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  • 1

    HiZ/LowZ Ch 1

  • 2

    HiZ/LowZ Ch 2

  • 3

    HiZ/LowZ Ch 3

  • 4

    HiZ/LowZ Ch 4

  • 5

    70/100V

  • 6

    Input Sensitivity (-10/+4dB)

  • 7

    Standby Polarity (NO/NC)

  • 8

    Front Panel Lockout

LEDs/Indicators

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  • Front LED (per channel)

    Green: Signal Present, Yellow: Limit (+24dbu), Red: Mute/Protect

  • Front LED (Main)

    White-On, Blink (0.5Hz)-Standby, Dark-Off

General

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  • Pre-Sleep Mode

    >15 minutes inactivity, all channels muted, wake-on-audio

  • Sleep Mode

    >29 minutes inactivity, power LED blinks ever y two seconds, wake-on-audio

  • Standby Mode

    Contact closure activated, power LED flashes evenly @1Hz

  • Remote Control Options

    WR-1, WR-1.1 DC level control

  • Cooling

    Adaptive Fan Cooling (side to rear venting)

  • Amplifier Protection

    Over-temperature, output DC, output over-power, AC mains voltage, mains fuse

  • Standby Switch

    Soft Switch w/ LED backlight

  • Power Connector

    IEC

  • Attenuators

    Recessed Front panel Input Level (per ch)

  • Power Supply

    100-240VAC, 50-60Hz

  • Minimum Startup Voltage

    85VAC@ 120V nominal, 170VAC@ 240V nominal

  • Environmental

    32 Degree F-104 Degree F (0 Degree C-40 Degree C)
    non-condensing

  • Safety Compliance

    ULg, CE, FCC Class B, RoHS

Physical

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  • Dimensions (H x W x D)

    1.72 x 17.33 x 11.54" (43.7 x 440 x 293mm)

  • Weight

    7.89 lbs (3.6kg)

  • UPC Code

    694970002555

About Ashly FA Series

Overcome space and power constraints with the FA Series FA250.4 4-Channel 250W Compact Class D Power Amplifier. This compact powerhouse features front panel input level controls and channel status indicators, along with Power On/Standby, Remote GPIO for DC Level Control, Standby & Failure mode status. It also boasts switchable input sensitivity (-10/+4dB), remote standby polarity, and a front panel lockout feature for added security.

The FA250.4 is equipped with built-in auto DSP functions such as an 80Hz High-Pass Filter and Clip Limiter, ensuring reliable performance and preventing potential damage to smaller speakers. Its highly efficient Class D design is further enhanced by a Silent Active Cooling System, which keeps the unit cool even during high-intensity usage.

One of the standout features of the FA Series is its Auto Sleep/Wake Mode, which ensures low energy consumption when the amplifier is not in use. This feature not only saves on electricity costs but also reduces heat generation, thereby extending the lifespan of the unit's electronic components.

The FA250.4 is designed to fit where other amplifiers won't, making it ideal for installations in tight spaces such as under conference tables, behind displays, inside kiosks, or even mounted on a wall. Despite its compact size, this amplifier delivers a powerful 250W per channel, making it suitable for powering background music in retail spaces, presentations in small churches or conference rooms, and more.

The amplifier's Power Sharing feature offers unparalleled flexibility, allowing one amplifier to replace two by delivering different loads per channel. This is further complemented by the multi-mode operation with switchable Low Z (4/8 Ohms) or Hi Z (70/100V) selectable per channel, enabling you to mix and match speaker types as needed.

The FA250.4 also features a USB port for future DSP updates and a remote lock-out feature to prevent unauthorized adjustments. With its combination of compact size, power, and flexibility, the FA Series FA250.4 4-Channel 250W Compact Class D Power Amplifier is the perfect solution for your audio needs.

Ashly FA Series Features

  • 250W x 4 with Class D power supplies
  • Silent Active Cooling System for noise-free operation
  • Front Status LEDs, power switch and level controls (can be disabled for security)
  • Remote GPIO for DC Level Control, Standby & Failure mode
  • Switchable input sensitivity (-10/+4dB)
  • Remote standby polarity & front panel lockout
  • Built-in auto DSP functions such as 80Hz High-Pass Filter and Clip Limiter
  • 70V and 100V capability
  • Extensive protection circuitry
  • Front panel power switch and level controls (can be disabled for security)
  • USB Port for firmware updates
  • 1U rack kit side-by-side
  • Safety / Compliance: cTUVus, CE, FCC, RoHS

Warranty Information

This product has a limited warranty of 60 months for parts and 60 months for labor.

Product Documents

User Manual

Key Features

  • Experience crystal-clear audio with this Ashly power amplifier, boasting low distortion for pristine sound.
  • Drive multiple speakers simultaneously with this 4-channel power amplifier, perfect for versatile audio setups.
  • Enjoy reliable performance with this Class D amplifier, designed for consistent output in any environment.
  • Optimize sound with adjustable input sensitivity, ensuring seamless integration with various audio sources.
  • This compact power amplifier delivers high power output, ideal for installations where space is limited.
  • Easily manage sound in commercial spaces using the 70V/100V output, offering flexible speaker configurations.

What's in the box:

  • Ashly FA Series FA250.4 4-Channel 250W Compact Class D Power Amplifier
  • IEC Power Cord
  • Set of Euroblock Connectors
  • Rack Mounting Hardware
  • Ashly 5 Year Limited Warranty