ACST offers a set of THz sources based on the active multiplication chain approach to provide high power signals beyond 100 GHz. These sources can be used as transmitters for single or multi-pixel applications and the current offer goes up to 540 GHz. ACST sources can be divided in high power and full-band sources. Both kind of sources are based on our special high power multipliers using dedicated Schottky diodes technology. ACST high power sources can provide more than 150 mW, 40 mW and 15 mW power at 150 GHz, 300 GHz and 500 GHz. These high power sources offer a bandwith larger than 25 GHz, 50 GHz and 70 GHz respectively. ACST full band sources cover a frequency range going from 40 GHz to 500 GHz with State-of-the-Art output power levels as high as 250 mW, 20 mW, 8 mW and 2 mW in the frequency range of E-band, D-band, WR-3.4 and WR-2.2 respectively. These performances are achieved without any power combining technique placing ACST sources among the most powerful while affordable options in the current THz market. The power handling capabilities of our sources can be increased in a factor of 2 to 4 under customer requirement.