The MODULUS 86 is a class AB solid state amplifier, characterized by a phenomenal audio quality and very low distortion levels.

The Modulus-86 is a composite amplifier providing true world class performance. This performance level is reached by using a high-performance audio op-amp to perform error correction on a high-power chip amplifier. The Neurochrome composite amplifier topology results in a high-performance chipamp-based amplifier with vanishingly low distortion and phenomenal sound quality.

The Modulus-86 is a turnkey high-performance analog subsystem. It achieves state of the art performance using readily available off-the-shelf parts. The Modulus-86 uses an LME49710 precision audio op-amp to control an LM3886 power amplifier. An OPA2277 precision op-amp is used as a high-end DC servo with third order filtering for an ultra-low output DC offset and fast settling time. The DC offset is less than 200 µV and is reached within ten seconds of power-up. A THAT1200 differential receiver provides common-mode rejection rivaling that of a line transformer, thus, minimizing hum injection by eliminating ground loops in the signal path.

This amplifier can provide a truly remarkable audio performance comparable to high-end electronic  on a price range of 4000-5000 euro.

At  8Ω loads this is the distorsion level: 0.000061% THD (1W, 1kHz) 0.000067% THD (40W, 1 kHz); 0.00038% THD + N (40W, 1 kHz).
loads this is the distorsion level:: 0.000067% THD (1W, 1kHz) 0.000067% THD (65W, 1 kHz); 0.00041% THD + N (65W, 1khz).

  • Channel: 1

  • Output power: 64W (4Ω) / 40W (8Ω)

  • THD (8Ω): 0.000061% (1W, 1kHz); 0.000067%(40W, 1kHz); 

  • THD+N (8Ω):  0.00038 % (40W, 1kHz)

  • THD (4Ω): 0.000067% (1W, 1kHz); 0.000067 % (65W, 1kHz); 

  • THD+N (4Ω): 0.0004% (65W, 1khz)

  • IMD (SMPTE and DFD): 0.00069%.

  • Output noise: 33 uV RMS (20 Hz - 20 kHz, A-weighted). 

  • Inter-channel crosstalk: -120 dB 

The power supply can be linear or switching. For both configurations the Nerochrome provides the appropriate modules.


The Power-86 Power Supply Board is a companion board for the state of the art Neurochrome composite amplifiers. The intended use is for one Power-86 board to power two Modulus-86 in a stereo amplifier. It is also possible to use one Power-86 board to power a mono block or, with a slight reduction in peak output power, more than two Modulus-86. Gold plated circuit board. Made in Canada.


The SMPS-86 is a switch-mode power supply intended as a simple turnkey power supply solution for LM3886-based amplifiers, such as the Modulus-86. It uses two sealed switch-mode power supply modules to provide ±24 V. Offering 120 W of continuous output power, it is designed power a stereo Modulus-86 amplifier for audio reproduction. 

For the linear power supply we use SUPREME AUDIO GRADE V2 toroidal transformers.


We don’t have any products to show right now.

We don’t have any products to show right now.

We don’t have any products to show right now.