With the MDL pro, TOPTICA’s established product line of tunable diode lasers are available in a transportable and compact design. The systems combines four tunable diode lasers in one 19-inch module with the same specifications as TOPTICA’s well known DL pro and DFB pro series. The digital low-noise DLC pro controller is at the heart of the newest platform of these tunable diode lasers. The MDL pro combines excellent laser performance with the unique and easy to use standard electronic sub-racks. Such a transportable solution will advance the development of mobile experiments like optical clocks, quantum computers or quantum sensors.