If so, please change its angle. •Avoid operating the MM-4 in extreme heat or humidity or where it may be affected by dust or direct sunlight. • Use mild detergent and a soft cloth to clean the MM-4, and never use solvent such as paint thinner. •The MM-4 is a parallel connection box featuring the MIDI standard. • One set of the MM-4 is able to control up to four MIDI devices. •With its MIDI Data Indicator, you can easily see signal fed into the MM-4. • This MM-4 can effectively prevent improper or delayed action usually occurs in *Chain Network setting up. "Chain Networks It is a serial connection of the MIDI devices by their MIDI THRU Jacks. Connections •The MM-4 can only be used with the devices featuring the MIDI system, therefore, cannot divide the conventional rhythm clock or audio signal, etc. •The MM-4 can send the signal only from MIDI IN to MIDI THRU, but not in the oposite direction. • Please refrain using the DIN cable longer than 5m (16'5"), as it may cause improper operatio...