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We're all about making listening more enjoyable. Transparent amplifiers and DACs bring perfection, but maybe you itch to tweak your sound. Subjective3 is a fun three-band equalizer, enabling you to customize bass, mids, and highs. Or, switch to Bypass mode to let the sound flow through unaltered. A must for any desktop audio enthusiast.


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We have always been a fan of equalization, from 10-band behemoths to our beginnings with cMoyBB's single switch bass boost. The Subjective3 enables you to make those fine adjustments to your sound. Customize your bass, mids, and highs, or let the sound flow through naturally. Subjective3 stacks well with OL DAC and Objective2.


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All Analog

100% Analog

While you can probably find a software equalizer for your favorite music app, the Subjective3 equalizer is fully analog in nature, so it works with every app and avoids digital re-sampling.

3-Band Equalization


The Subjective3 Equalizer has a wide adjustment range of +/-15dB for bass, mids, and treble. The point of an EQ is to tune your listening experience. Subjective3 adds color while achieving low THD+N with its knobs in their neutral positions.

Bypass Mode

Bypass Mode

A muting relay eliminates turn on/off transients, and when the EQ is switched off, the original audio signal passes directly to its RCA output jacks.

Tech Specs

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Equalizer Performance

  • THD+N 20Hz-20kHz 0.0022%
  • Noise (A-Weighted) -104 dBV
  • IMD CCIF 19/20 kHz -6.03 dBFS 0.001%
  • IMD SMPTE -6.03 dBFS 0.0009%
  • Input Sensitivity >2VRMS
  • Crosstalk (1kHz) -69 dB
  • Bass Adj. Range +/-16.5 dB
  • Mids Adj. Range +/-14.9 dB
  • Treble Adj. Range +/-15.2 dB
  • View EQ Curves


  • Inputs RCA
  • Output RCA
  • Power 15VAC


  • Case Dimensions (mm) 108.50 x 80.00 x 29.50
  • Case Dimensions (in) 4.27 x 3.15 x 1.16
  • Weight 12 oz


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  • Subjective3 Equalizer v1.00
  • 15VAC Power Adapter


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