Adapters impedance transformers have the following features: - designed as an accessory for amplifiers Krohn-Hite, to improve the range of amplification, current and output impedance - frequency range: 30 Hz to 500 kHz - output power: 75W, Imax 6, 5A - input voltage: up to 125 Vrms - adaptation of impedances of 2 ohms to 1 k ohm.