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MothSynth is a tiny affordable Sampler / Synthesizer. Our mission is to build easy to use, opensource music making things that are fun to tinker with.


  • Compact size
  • 16-key matrix keypad
  • ESP32-S3 processor, PCM5102A amp
  • MIDI-IN (clock only in beta) on some models
  • 1-inch OLED display (OLED Model)
  • Battery Mod
  • 4 LEDs, Track / Pattern / BPM
  • 11 One Second Sample Banks
  • 12 1/3 Second Sample Banks
  • USB-powered, 3.5mm output
  • Open-source MothOS software
  • Config / Sample Upload App
Product 1

Fully Assembled. Supports midi-in clock, start/stop/continue only for now, but more features like note triggering are coming with future software updates!


MothSynth Midi-In LE

$37.99 On Shopify!


Product 2

Fully Assembled. AA Battery Mod. Supports midi-in clock, start/stop/continue only for now, but more features like note triggering are coming with future software updates!


MothSynth Midi-In LE + AA Mod

$43.99 On Shopify!


MothSynth is an open-source, Arduino compatible sampler, tracker, and synthesizer that puts the power of live music creation at your fingertips. Each of the 16 buttons not only trigger notes but also execute four distinct functions such as delay, reverb, overdrive, envelope shaping and many more.

Powered by MothOS, a fully open-source firmware, MothSynth encourages musicians and Arduino enthusiasts to modify and customize it according to their needs. With MIDI-In clock sync for smooth integration into larger setups and more MIDI features coming soon, MothSynth is designed to expand with your creativity.

Our companion apps make it easy to upload samples and configure the device, giving musicians endless possibilities in a compact and affordable format.

Companion App

Cheatsheet and Downloadable Instructions


DIY AA Battery Mod

Schematics and GitHub


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Terms and Conditions:

Privacy:

We take your privacy seriously. MothSynth does not collect or store any personal information. Our site is hosted on HostGator which may have its own privacy policy. Orders are fulfilled By Shopify. Please refer to their privacy policy for more information.


Shipping:

All orders are fulfilled by Shopify. Once your order is placed, it will be processed within 5 business days, though we typically ship orders sooner. You will receive a confirmation email with tracking information once your order has shipped. Shipping times may vary depending on your location.

    Domestic Shipping: Usually delivered within 3-5 days after the order is processed. International Shipping: Delivery times vary depending on the destination and may take longer. Customs fees or import duties may apply and are the responsibility of the customer.

Please allow additional time for orders placed during holidays or promotions.


Product Information:

MothSynth offers synthesizers, samplers, and related accessories. We strive to ensure that all product descriptions, pricing, and availability are accurate. However, we reserve the right to make changes or updates to this information without notice.


Pricing and Payments:

All prices are listed in USD and are subject to change without notice. Payments are processed securely through Shopify. You agree to provide accurate and complete payment information. Any fraudulent activity will result in immediate termination of the transaction and may result in legal action.


Returns and Refunds:

We offer a 30-day return policy. If you’re not completely satisfied with your MothSynth purchase, you can request a return within 30 days of receiving your order. To initiate a return, please contact us via email at mothsynthcontact@gmail.com with your order number and reason for the return. Please note that the customer is responsible for return shipping costs. Refunds will be issued to the original payment method once the return is received and inspected.


Intellectual Property:

All content on the MothSynth website except for the explicitly provided opensource software and, DIY schematics and GitHub repositories, including product designs, logos, text, images, and non-opensourced software, is the property of MothSynth or its content suppliers. You are allowed to build your own mothsynth, modify and redistribute the software, but you are not allowed to use our logo and design elements without written permission.


Limitation of Liability:

MothSynth and its affiliates are not liable for any damages resulting from the use or inability to use our products or website. This includes, but is not limited to, direct, indirect, incidental, or consequential damages.

MothSynths by ToggleBoss, Copyright ToggleBoss (c) 2023-2024