TPA32xx with PFFB


TPA32xx 1/2ch

Class D Audio Amplifier

With Post Filter Feedback



EAUMT-0XX0-X-FB is a 1(PBTL) or 2 channel (BTL) high quality class D audio amplifier module base on TPA32xx with customized design and mainly suit for both consumer and professional project.
TPA32xx is a high-performance Class-D power amplifier that enables true premium sound quality with Class-D efficiency. It features an advanced integrated feedback design and proprietary high speed gate driver error correction (PurePath™ Ultra-HD). This technology allows ultra low distortion across the audio band and superior audio quality.
By combining PFFB, improve analog input front design and upgrade higher quality components to obtain highest performance and lowest noise and distortion, this module provides an excellent audio solution that highly compact and efficiency with state-of-the-art performance.
Along with current EAUMT-0XX0-X module that released years ago, some high-end customer expects more implementation on post filter feedback and more option on DIY, a fully new and upgrade version now is your attempts and choices.

Key Features

  • 18uV (TPA3255) Output Noise (AES17,A-weighted)
  • 15uV (TPA3251) Output Noise (AES17,A-weighted)
  • 260W @ 1% THD+N, 1kHz, 4Ω (TPA3255)
  • 140W @ 1% THD+N, 1kHz, 4Ω (TPA3251)
  • 125dBA dynamic range
  • BTL/PBTL configuration for best audio performance
  • MELF resistor for audio path to get best performance and audio quality
  • Fully compatibility one design for both BTL and PBTL (TPA3251 and TPA3255)
  • 7G23B or VER2923,APG2923,HA3588 inductors compatible design
  • Fully differential signal chain from input to output for lowest noise and distortion
  • Extra optional input buffer for single-end input source
  • On board integrated low noise analog and housekeeping power supply
  • Compact size (120mm*85mm*40mm – L*W*H)
  • Additional power ON/OFF reset circuit for Pop noise suppression
  • Single supply voltage range 36V~51V


  • Active Loudspeakers and Power Subwoofers
  • Installation audio products
  • High-end stereo and multi-channel amplifiers
  • Bluetooth & Wi-Fi Audio Product
  • Sound bars, Docking, Radios
  • Home Theater System & AVR’s