Portable speaker system for electric string instruments

A portable speaker system comprising:

• an audio input device to receive a raw audio signal generated by a musical instrument;
• an amplifier to receive an audio signal and amplify the audio signal to generate an amplified audio signal, the audio signal comprising a processed audio signal;
• a supplementary audio connection couplable to the audio input device, the amplifier, and a portable computing device, the supplementary audio connection configured to:
• forward the raw audio signal from the audio input device to the portable computing device;
• receive the processed audio signal from the portable computing device, the processed audio signal generated by the portable computing device by processing at least the raw audio signal forwarded to the portable computing device by the supplementary audio connection;
• and
• forward the processed audio signal to the amplifier;
• a speaker coupled to the amplifier, the speaker configured to receive the amplified audio signal from the amplifier and generate output sound from the amplified audio signal;
• and
• a portable housing separate from the instrument and separate from the portable computing device, the portable housing to contain the audio input device, the amplifier, the supplementary audio connection, and the speaker.