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High-Fidelity Stereo Headphone Amplifier — TPA6120

The TPA6120 High Fidelity Stereo Headphone Amplifier is a dedicated headphone driver module built around the Texas Instruments TPA6120A2 chip — a current-feedback amplifier designed specifically for driving headphones with minimal distortion and ultra-low noise. If you want studio-quality headphone audio from your DIY music player, DAC, or audio project, this is the amplifier to use.

Why you'll love it

  • Ultra-low THD+N: Less than 0.001% distortion at typical listening levels
  • Current-feedback architecture: Drives headphones from 16Ω to 600Ω cleanly
  • Wide bandwidth: Flat frequency response well beyond the audible range
  • Stereo output: Two independent channels for left and right

Amplifier comparison

Module Type Power Best for
TPA6120 (this) Headphone amp ~80 mW into 32Ω Hi-fi headphone listening
PAM8403 Class D stereo 2×3W Small battery speakers
TPA2012 Class D stereo 2×2.1W Compact powered speakers
MAX9744 Class D stereo 2×20W Room-filling sound
TPA3116D2 Class D stereo 2×50W / 1×120W Powerful speaker systems

Technical specifications

Chip TPA6120A2 (Texas Instruments)
Topology Current-feedback headphone amplifier
Channels 2 (stereo)
THD+N <0.001%
Headphone Impedance 16Ω–600Ω
Supply Voltage ±5V to ±15V

Frequently Asked Questions

Can this drive speakers? No. The TPA6120 is designed for headphones only. For speakers, see the speaker amplifier modules.
What headphones work best? Any headphones from 16Ω to 600Ω. Higher-impedance audiophile cans benefit most from a dedicated headphone amp.

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