Hot answers tagged amplifiers
The amp you described (the Spartan Music Portable Battery Mini Amp) has an actual overdrive switch (it's the last knob). If you want a rock sound, you can turn the overdrive on, set the tone around 7 or 8 (that will accentuate the mid frequencies) and give a test. With time, you'll know what kind of setup fits your play style. Also, as you develop your play ...
If you do not want to spring for a distortion pedal, on your amp turn your level down and your gain up for a basic distortion effect. Then mess around with the tone until you have something close to the sound you want. That's what Yorik is describing to you in the comments.
i had such a situation worked out like this- i ran a split cable from my guitar thru a small radio shack mixer, then outputted straight to a pre-cbs twin from one channel for clean, and to a morley volume pedal to a post-cbs twin for crunch. by increasing/decreasing the volume pedal i was able to fade the crunch side in/out. there was volume or signal loss ...
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