SKU: 43313623113

Modulus-286

Sale price$179.55 Regular price$199.50
Save 10%

Pay in installments of $49.88 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Modulus-286The Modulus 286 is a 125 W, Class AB, LM3886 based power amplifier with error correction provided by an LM4562 precision opamp. It delivers clear, precise, and fatigue free sound; and distortion below 1 ppm even at full power. This third revision of the Modulus 286 features improved performance, in part due to the further optimized PCB layout. Modulus 286 Rev. 3. 0 is slightly smaller than its predecessor, but shares the same mounting hole locations,

The Modulus-286 is a 125 W, Class-AB, LM3886-based power amplifier with error correction provided by an LM4562 precision opamp. It delivers clear, precise, and fatigue-free sound; and distortion below 1 ppm even at full power. This third revision of the Modulus-286 features improved performance, in part due to the further optimized PCB layout.

Modulus-286 Rev. 3.0 is slightly smaller than its predecessor, but shares the same mounting hole locations, allowing for a direct replacement.

The wiring harness necessary for connecting to the Modulus-286 is included.

Technical Documentation

  • Description
  • Key Specifications
  • Circuit Topology
  • Key Features

    • Fully assembled module made in Canada from parts sourced from authorized distributors in Canada and the USA.
    • World class performance ensured by an error correction circuit with local, low-noise power supply regulators.
    • Power supply agnostic by design. High performance is attained with unregulated power supplies and with switch mode supplies.
    • Differential (balanced) input which eliminates hum and ground loop issues. Can be used with single-ended (unbalanced) sources as well.
    • On-board EMI/RFI input filter and ESD protection.
    • Four-layer PCB optimized for high signal integrity. All ground management is handled on the PCB.

    Build difficulty (1-5): 1 (easy).

    The build video below shows you how to build a Modulus-286 stereo amplifier. Please watch the video to gauge the skills needed.

  • The graph below shows the THD+N vs output power for the Modulus-286 Rev. 3.0 for 8 Ω and 4 Ω load. The sharp jumps in the graph are caused by range switching of the APx555 used for the measurement.

    The table below lists the key specifications for the Modulus-286 Rev. 3.0. For the full specifications, please see the data sheet on the Downloads tab.

    Parameter Value Notes
    Output Power 125 W 4 Ω, < 0.01 % THD+N
    Output Power 65 W 8 Ω, < 0.01 % THD+N
    THD

    ≤ -130 dBc

    (0.000032 %)

    50 W, 8 Ω, 1 kHz
    Multi-Tone IMD Residual ≤ -140 dB Ref.: 50 W AP 32-tone, 50 W, 8 Ω
    Total Integrated Noise and Residual Mains Hum 13.0 µV RMS 20 Hz - 20 kHz, A-weighted
    Gain 20 dB 26 dB selectable by jumper
    DC offset

    ≤ ±320 µV

    ≤ ±2 mV

    Typical

    Guaranteed by design

    Finished Assembly Dimensions and Weight

    101 × 60 × 40 mm

    100 g

    (W × D × H)

     

    Recommended power supply Power-86 with 2x25 VAC, 200-300 VA power transformer for stereo
    All parameters are measured at a supply voltage of ±36 V DC.
  • The block diagram of the Modulus-286 Rev. 3.0 is shown below.

    The Modulus-286 Rev. 3.0 uses an LM4562 to form a balanced composite amplifier with two LM3886 in parallel. An LM4562 is used for the differential input. 

    The differential input can be used both with differential signal sources (XLR) and with single-ended ones (RCA).

    The Modulus-286 is power supply agnostic by design. This is unique to the Neurochrome Modulus amplifiers. Due to the error correcting composite amplifier topology, the Modulus-286 performs as well on a traditional unregulated linear power supply or a switch mode power supply (SMPS) as it does on a well-regulated laboratory power supply.

    The PCB layout is crucial at the performance levels attained by the Modulus-286. The four-layer PCB employs differential signal routing and carefully designed copper pours and planes to ensure optimal circuit board performance. 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 43313623113

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 22 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
Verified Purchase
Jean Elie Tabbal
Battle Creek, US
★★★★★ 3
Wrist band...
Color: GOLD METAL
Really beautiful wrist band but much smaller than the picture.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 22, 2026
C
Verified Purchase
Cozy Girl Gaming
Birmingham, US
★★★★★ 5
I nice everyday bag!
I love this bag. I use it every day. I was tired of carrying around large purses. I was tired of carrying around just wallets. I needed something to be able to hold a few things that was ease of use. This bag really did that for me it has 2 pockets one side I keep my phone in among some paper documents. The other side has spots for a few cards and whatever else you would like to put inside. It’s light weight and the strap is super cute and the design as a whole is great. Definitely worth the money for this style.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2025
B
Verified Purchase
BK2019
Draper, US
★★★★★ 5
Cute
Cute and smaller, perfect size for me. My second ‘purse’ from this brand and love both! Nice material inside and out.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 19, 2026
H
Verified Purchase
Hazel35us
Pawtucket, US
★★★★★ 5
Great Bag!
I used this bag all over Europe this summer! It was so easy and convenient to have access to my wallet, sunscreen, sunglasses in one spot over my best. The bag was super cute and held a lot of items. The thick strap was really good for support and even held up during the really hot days. There are a few different pockets which is helpful as well. I recommend this bag! :)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 28, 2023
C
Verified Purchase
C. Crocker
Battle Creek, US
★★★★★ 4
Nice pink, bigger than expected
Color: Rose Red
Bigger than expected, I bought four my niece, she likes it and I think once she gets some items in it and break it in. It’s a nice shade of pink and I really like the strap.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2025

recommand products