Effects are often incorporated into amplifiers and even some types of instruments. Electric guitar amplifiers typically have built-in reverb and distortion , while acoustic guitar and keyboard amplifiers tend to only have built-in reverb. Some acoustic instrument amplifiers have reverb, chorus, compression and equalization (bass and treble) effects. Vintage guitar amps (and their 2010-era reissued models) typically have tremolo and vibrato effects, and sometimes reverb. The Fender Bandmaster Reverb amp, for example, had built-in reverb and vibrato. Built-in effects may offer the user less control than standalone pedals or rackmounted units. For example, on some lower- to mid-priced bass amplifiers , the only control on the audio compression effect is a button or switch to turn it on or off, or a single knob. In contrast, a pedal or rackmounted unit would typically provide ratio, threshold and attack knobs and sometimes "soft knee" or other options to allow the user to control the compression.
Setting a new precedent in features and affordability, DigiTech proudly introduces the new RP80 amp modeling guitar effects processor. The RP80 combines the tones of 11 vintage and modern Amps with a palette of programmable studio quality effects (up to 9 at once) with a built in expression pedal for unparalleled real-time control of your sound. Using a multi-effects device has never been easier thanks to the RP80's no-nonsense user interface. Just select the effect and dial in one of the great pre-programmed settings. If this weren't enough, the built-in Drum Machine is a great tool for practicing with and an easy-to-use 13-LED array tuner ensures your always in tune. The RP80 comes ready to use with 40 great Factory Presets, and includes 40 User Presets for custom creations. The rear panel features a single 1/4" input, 1/4" left and right outputs, and a 1/8" stereo headphone output for late night rehearsal.