Mason Jar Speaker KIT (v3)

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We’ve got a new version of this product!

Mason Jar Speaker KIT (v4)


Let’s face it: the speakers on your phone & laptop aren’t loud enough.

Grab this KIT & build a Mason Jar Speaker to play tunes from your smartphone & tablet. BUT WAIT: it’s also an electric guitar amplifier! Plug in & bust out those wicked solos. Great first project, you’ll have music after 22 solder joints & some simple assembly. Impress your friends with a speaker you built with your own hands!

Here’s what the KIT includes

  1. Printed Circuit Board (PCB)
  2. Toggle Switch with Hex Nut
  3. 2x 5mm Red LED
  4. 2x 3.5mm AUX Jack with Round Nut
  5. 2x 2-pin Straight Male Header
  6. Capacitor (1000uF)
  7. 3x Button Head Screw
  8. 3x Flat Head Screw
  9. 2 Inch Full Range Speaker
  10. Battery Holder (3x AAA)
  11. Laser Cut Wooden Top
  12. 3.5mm Spiral Cord
  13. Guitar Adapter (optional)
  14. Wide Mouth Pint Jar and Ring (optional)

Beautiful, easy to follow instructions on every device


  • High Quality, High Volume Sound – ample sound for your bedroom, kitchen, or backyard BBQ. People are always surprised at the amazing volume and full range sound created by the 2 inch full range speaker and 2.4W amplifier (140 to 20 kHz).
  • Compatibility – works with any device with a headphone jack (smart phones, iPods, tablets, etc). Also functions as an electric guitar amp.
  • Daisy Chain – two AUX jacks allow you to chain together multiple speakers for louder and louder sound. The more the merrier!
  • Fun for both beginner and advanced makers – check out the assembly video and text instructions below. Only 22 solder joints (basic soldering knowledge required). Assembly requres less than 1 hour from start to music. Recommended for ages 12 and up.
  • Made in USA – high quality product with USA sourced materials, prepared in California by two dudes who love speakers.
  • Modular Design – headers connect the speaker and battery pack to the circuit board, so you can easily try different configurations or replace a broken part.
  • Sustainable Enclosure – most portable speakers come in a plastic box, which is a problem because less than 7% of plastics are recycled in the US. The glass Mason Jar is Earth-friendly because it is easily reused and recycled, plus you might already have one at home.
  • Strong, High Quality Cord – connect your device, fits in any 3.5mm headphone jack. Use ¼” adapter for guitar.
  • Long Battery Life – 3 AAA Batteries give you about 15 hours of jam time/easy listening (not included).
  • What’s Not Included – make sure you have access to these items: soldering iron, solder, phillips head screwdriver, wire clippers, ruler and 3 AAA batteries.

Additional information

Weight 0.5 lbs
Dimensions 4 x 4 x 5 in

1 review for Mason Jar Speaker KIT (v3)

  1. James from Livermore, CA

    I can’t even describe how excited I was when I went to test it and it worked. I have soldered many a wire in my day, but never soldered to a circuit board before. It took a few tries at first and then I had it down.

    We have a tube speaker called a Stella Pillar and granted it has much more volume than the mason jar amp, but it has way too much bass, no mids, and an average treble. Your little speaker has a much more full even sound throughout the range and sounds much better to my ear.

    Thanks for the forward thinking and the great product. Much appreciated.

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