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LM3886 Stereo Chipamp Amplifier Kit

LM3886 Done Right Kit

Availability:
5+ in stock, ready to be shipped
$0
$149 - $149
$149
$149 - $149
$149

The LM3886 Done Right extracts as much performance from the LM3886 chipamp as possible without using error correction and other tricks. It delivers 65 W into 4 Ω at a higher performance level than specified in Texas Instruments' LM3886 data sheet! 

The stellar performance is achieved through proper decoupling, a well-engineered PCB layout, and genuine quality parts.

The LM3886DR circuit board is made in Canada and the parts are sourced from authorized distributors in North America. The Kit contains all the parts needed for the two amplifier modules in a stereo amp.

Technical Documentation

  • The key features of the LM3886DR are summarized below.

    • 65 W into 4 Ω, 40 W into 8 Ω when used with the recommended ±30 V power supply.
    • Mono board allows for mono block construction. The Kit includes two LM3886DR circuit boards and the parts to populate them.
    • PCB layout is fully optimized for high signal integrity.
    • Elaborate use of copper planes and pours for the best audio quality possible from the LM3886 without error correction.
    • All components needed for good amplifier stability included in the circuit.
    • Input RFI/EMI filter prevents all pops and clicks from the switching of heavy loads as well as buzz from with cell phones, WiFi, and other RF interference sources.
    • Input ESD protection protects the amplifier from electrostatic discharge.
    • Click and pop free startup and powerdown.
    • Terminal blocks accepting up to 10 AWG (5 mm²) wires are used for the power supply and speaker connections.
    • Gold plated circuit board. Made in Canada and fully electrically tested by the manufacturer. 

    In addition to the parts provided with the Kit, you will also need some thermally conductive paste (Wakefield #120, Wakefield #126, Arctic Silver, et al.) and a heat sink for the LM3886.

    The LM3886DR needs to be powered by a power supply in the range of ±20 to ±30 V. I recommend a Power-86 with an Audio Grade Power Transformer. Many 24 V switching power supplies, such as the Mean Well LOP-series can be used as well.