AudioEQ Gold


Versatile OP-Amp based Audio EQ module with gold plated connections.

90 in stock

SKU: SM004-1015-AU Category:


More than an op-amp breakout board, the SMN AudioEQ Gold is a versatile analog buffering and filtering circuit with gold connectors.  The board is delivered as a fully functional stereo audio buffer with unity gain, and 20-20,000Hz bandwidth.  The Gold Version includes gold plated connectors for optimal performance.

Key Features of the SMN Audio EQ include:

  • Gold Connectors for Hi-Fidelity applications
  • Low noise TLO72 op-amps
  • Dedicated Differential Input Buffers
  • Inverted Output
  • Differential Output
  • Two full Opamp based Biquad filters per channel
  • Hipeak feedback circuits
  • Passive shelf filtering
  • TLE2462 based virtual ground for single supply operation
  • Operation from 5V-24VDC input
  • 0603 & larger parts for easy soldering

The SMN AudioEQ can easily be modified for a variety of additional purposes including the following applications:

  • Differential Measurement Buffer/Signal Conditioner
  • Microphone Preamp
  • Crossover Filter
  • BiAmplifier Signal Conditioning
  • SubWoofer Preamp
  • Channel Equalization
  • Allpass Filtering
  • Sallen-Key Filter


The SMN AudioEQ is available as an Open Hardware design with LT-Spice Models available for download.

AudioEQ-Rev3 Schematic

AudioEQ User Manual

AudioEQ LTspice Circuit

Now available on Amazon

Check our blog for additional projects and ideas on how to use the AudioEQ board.

Upgrade your AudioEQ with a black anodized aluminum enclosure and printed end panels!

Custom versions are possible for an NRE fee.  Possible modifications include alternate op-amps and/or custom designed filters.  Contact us for details.


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