The ENI AP-400B Solid Stat Amplifier offers a choice of two power modes, leveled or unleveled. In the unleveled mode, the AP400B amplifier covers the frequency range of 80kHz - 2.7MHz with up to 400 Watts of power. In the leveled mode, the ENI AP-400B offers the same frequency range and power output, with 5% automatic forward or load power leveling.

Power level adjustment is easily accomplished with either the front panel control or an externally-generated 0-10Vdc signal. A rear-panel accessories connector provides TTL-compatible inputs and outputs for total remote control capability. RF voltage levels and power output into the load are accurately monitored by the ENI AP-400B's built-in linear power meter.

Frequently used in medical and industrial applications such as ultrasonics, induction heating, and laser modulation, ENI AP-400B also provide RF power for plasma etching, sputtering, and deposition.