If you think that having a tiny practice amp sounds good in theory, but you're concerned about whether or not such an amp exists that actually sounds good, the Positive Grid Spark Mini is here to ...

If you're looking for a portable guitar amp, the Positive Grid Spark GO is an option that has received many positive reviews. Using a portable amp like this means you can play guitar wherever you go - ...

The circuit has been designed for the purpose of creating a portable unit of preamplifier that would function as standalone control for gutitars. TL062 – a low power JFET dual operational amplifier ...

I have an iPad that acts as my guitar rig. When jamming, I will often need to adjust the volume on the iPad (and specifically not on the guitar). I currently use the Satechi Media Knob and it works ...