guitar players, has slightly lower center frequencies of 110 Hz, 160 Hz, 240 Hz, 350 Hz, 525 Hz, 775 Hz, 1.2 kHz and 1.8 kHz. In addition, the 110 Hz filter was changed to a low-pass filter. The gain of each filter is further controlled by an envelope that is triggered by any of a number of preset animation sequences. The user can select one of 24 animation patterns. Rhythmic variations can be created by adjusting the levels of the filters, speed of animation, and envelope amount. Moog Music upgraded the MF-105 by combining the two units into one box where the user could switch between having the 8 resonant filter sliders to operate either in the range of the MF-105B or the MF-105. This new version also had MIDI control and was released as the MF-105M MIDI MuRF. The unit has two outputs for either Mono or Stereo operation. When both the left and right output jacks are used, the odd-numbered filters are sent to the left channel, and the even-numbered filters are sent to the right channel. This allows for the spreading of a sound's frequencies between two speakers. Moog also released Pattern editing software for the MF-105 which users can run on their home computers to create their own Animations that could be loaded into the unit. The MIDI MuRF Pattern Editor is available for download free of charge from Moog Music. It provides easy access to parameters only available through MIDI CC commands. Saving and storing patterns on a computer allows for an unlimited number of available pattern variations. MF-107 The FreqBox or MF-107 was added to the moogerfooger series in early 2007. It was not designed by Bob Moog and it was the first new stomp box to be produced by Moog Music after Bob Moog's death. In general the FreqBox sounds similar to a synthesizer because its interior is actually a VCO that is modified by the input signal. The left hand side of the control panel for the FreqBox contains a VCO which has two knobs to control frequency and waveshape. The waveshape is continuously variable from triangle wave to sawtooth wave to square wave to pulse wave. There is a hard sync on/off switch that turns on hard syncing the VCO signal with the input signals frequency. The amplitude of the VCO is controlled by the amplitude of the input signal. On