DTA-100LF Desktop Subwoofer Amplifier with EQ

Quick Overview

The DTA100-LF is a stylish desktop amplifier designed by Dayton Audio specifically for low-frequency application. This low profile amplifier features an ultra-stable DC power supply and optimally designed Class-D circuit topology to give you 100 watts at 4 ohms. Use the three built-in filters to optimize the output and power your drivers to their full capability. After dialing in your tone, the DTA-100LF even manages its own power state with the auto-on feature to function as a true set-and-forget unit!

Product Highlights

  • Low-profile design looks good and sounds better
  • 70 Watt output at 8 ohms and 100 Watt output at 4 ohms
  • Adjustable phase, subsonic filter, low-pass filter, and single band EQ
  • RCA line Inputs and outputs
  • Auto-on functionality for true set-and-forget operation
  • Mounting brackets for mounting under desks and tables
  • With a Dayton Audio 5 year warranty, it’s more than a guarantee, it’s a promise

Product Manuals / Spec Sheets / Downloads

Dayton Audio DTA-100LF User Manual

Buying Options

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No More Compromises Never choose between size, power, or control ever again

The problem is decades old. Subwoofer amps are either small and powerful, but lack control, or full of features and powerful, but the size of a good sized dog. Now you can have the best of all three worlds with the DTA-100LF. Featuring 100 watts of clean Class D power with a complete suite of filters and phase control, all in a compact package that will look perfect on your desk.


Complete Acoustic Control

Three powerful built-in filters and variable phase adjustment protect, integrate, and tune your drivers into any system.

A low-pass filter can integrate the drivers with your full-range speakers.

A complete single band parametric EQ helps manage peaks from room modes with infinitely adjustable frequency, bandwidth and level adjustment.

Unique to the DTA-100LF, the adjustable subsonic filter provides complete control to protect your drivers from over-excursion and excessive bass.


Designed for Desktops

Its compact size makes it perfect for tight locations and desktops where space is at a premium. The included mounting brackets allow you to mount the DTA-100LF underneath a shelf or desk for added convenience. The Dayton Audio DTA-100LF acts as the last piece of your system that gives you complete control over your audio, right where you want it.



Total Integration

Let the music do the work for you, when the DTA-100LF detects signal at its input, it can automatically turn itself on. Once the music has stopped playing, the DTA-100LF will turn itself off automatically to save power. No fuss and no more reaching over your expensive equipment!



Packed With Power

Designed specifically for subwoofer applications, this low-profile amplifier works equally well for bass shaker duty. A true powerhouse of a device, capable of outputting 100 watts to 4 ohm speakers, the DTA-100LF is an ultra-high-quality Class-D amp capable of competing with pricey, name-brand audio equipment. Powerful, yet very lightweight and compact, the DTA-100LF can give you the output of a much larger, stand-alone subwoofer amplifier.

  • Maximum Output Power: 70 Watts @ 8ohm, 100 Watts @ 4 ohm
  • THD: <1%
  • Frequency Response: 20 Hz - 180 Hz +/- 3dB
  • SNR: 95dB
  • Input Sensitivity: 200mV
  • Line Input Connectors: RCA
  • Line Output Connectors: RCA
  • Low Pass Crossover Range: 30 Hz - 200 Hz
  • Phase Adjustment: 0° - 180° Variable
  • Line Input Impedance: 22 kOhm
  • Line Output Impedance: 4 kOhm
  • Power Input Voltage Range: 120 - 240 VAC
  • Standby Power: 1.8 Watts
  • Max Power Consumption: 150 Watts
  • Dimensions (W x H x D): 7.5″ W x 2″ H x 5.5″ D
  • Weight: 3.3 lbs.



Model Number DTA-100LF
Color Black
Unit of Measure Each
UPC 848791008023
Warranty - Parts 5 Years
Warranty - Labor 5 Years
Product Shipping Weight (lbs.) 3
Product Weight --
Product Height 2"
Product Width 7.5"
Product Length --
Product Depth 5.5"