Lava Music caused a glitch in the Matrix a few years back with an oddball carbon-fiber acoustic guitar rocking built-in digital effects. Now the company is looking to reshape the amplification ...

We may receive a commission on purchases made from links. Like its predecessor, the Positive Grid Spark 2 is more than just another guitar amp. In addition to providing all the features you'd expect ...

If you purchase an independently reviewed product or service through a link on our website, Rolling Stone may receive an affiliate commission. Acoustic guitars naturally produce their own ...