Fender Acoustasonic Guitar Amp for Acoustic Guitar, 40 Watts, with 2-Year Warranty 2x6.5 Inch Speakers, Chorus Effect, Dual Front-panel Inputs, 9.8Dx17.6Wx15.5H Inches, Brown/Wheat Preamplifiers because the change from fast

because the change from fast to slow ramps up and down gradually like an organ’s rotary speaker

Based on db's fabled sub harmonic synthesizer processors

On top of that

With aluminum being a much lighter material than the industry standard (copper)

you get a killer amp with widely ranging dynamics and natural "grit

Fender Acoustasonic Guitar Amp for Acoustic Guitar, 40 Watts, with 2-Year Warranty 2x6.5 Inch Speakers, Chorus Effect, Dual Front-panel Inputs, 9.8Dx17.6Wx15.5H Inches, Brown/Wheat Preamplifiers because the change from fastBrand: Fender Color: Brown & Wheat Features: The Fender Acoustasonic Guitar Amplifier features 40 watts, 9. 8Dx17. 6Wx15. 5H inches This unique amplifier is the only Fender guitar amp to feature a "whizzer" conea small supplementary speaker cone attached to the voice coil of the amps 6 inch speaker Enjoy extra ambiance with the instrument channel's built in reverb The convenient dual front panel inputs include a standard inch jack for an instrument