Check the listing for details. LM386 Audio Amplifier PCB - Guitar Synth Instrument Amp PCB by Synthrotek. Condition: New. Listed at 5.99 USD. Please note: This includes the PCB only. Please see the bill of materials on the Synthrotek website for a complete list of parts needed. The LM386 Audio Amplifier circuit is Synthrotek's classic take on a simple lofi amplifier that gives you variable gain, volume control, and works best with instrument amplification. It also works great as a cheap and dirty synth amp that you can put into the device of your choice.Features and specifications:Comes with a speakerCan be used as a preampCan power big speakers (though not terribly loud)Build with either 3.5mm or 1/4 inch jacks, both are includedPower output: 700mW with an 8ohm speakerRequires a 9V battery or 300mA power supply (not included) LM386 Audio Amplifier - DIY LoFi Amp by Synthrotek Video will open in a new window Using the eBay App? Paste link into a browser window: