Tascam DR-40X Four-Track Digital Audio Recorder and USB Audio Interface stanf or hum and buzz from

or hum and buzz from ground loops

such as wave shaping to shape the overtones of the oscillator and a sync/ring switch

IK-Multimedia's iRig BlueTurn is a pedal that allows you to scroll through digital sheet music with the tap of your foot

5mm stereo minijack

Tascam DR-40X Four-Track Digital Audio Recorder and USB Audio Interface stanf or hum and buzz fromFor podcasts, sound effects, and music recording applications, the Tascam DR 40X portable handheld recorder is capable of capturing up to four tracks of high resolution audio with no external microphones required. Its onboard unidirectional condenser mics can be set for a wide or tight stereo image, and may be used simultaneously with the mic line combo inputs. Equally adept as a handheld device or when used in stand or camera mounted setups, the DR