Connect your chosen instrument and amplifier to the M-27 using only high quality shielded audio cables. Begin your session with the “LEVEL” control set in approximately the noon position, the “ATTACK” control set to maximum and the “TREBLE” control set to minimum. Activate the M-27 with the onboard bypass selector switch and slowly increase or decrease the “LEVEL” dial as required. This control will either enable you to match your active sound to your bypassed sound or to be able to boost it above unity. Using the onboard bypass selector switch you can now toggle back and forth from the active effect to your clean guitar signal. Once you have experimented with the “LEVEL” control turn your attention to the “ATTACK” control. Decrease this control to give you the amount of sustain and attack that you require. This control is better suited to be approached in the sense of attenuation being as the greater degree of boosting and intensity of fuzz is in the final quarter of the rotation. You can now shape the distortion color with the use of the on-board “TREBLE” control. With this control set in its minimum position the M-27 is running as the originally intended Meathead configuration of maximum bass amplification. Rotating this control to the right reduces the overall bass tones seen and therefore amplified by the M-27 circuit and delivers a brighter more intensely dynamic fuzz tone that retains more of you instruments fundamental attack characteristics.
This device is installed with a Zinc Carbon 9-volt power cell which is activated via the insertion of a 1⁄4” jack plug into the “IN” socket. To ensure a long & lengthy cell life always unplug your cable after use. Power can also be supplied by means of an external well-regulated 9- volt power supply fitted with a 2.1mm plug and operating with a negative centre and positive sleeve.