MC step-up transformer can be switched between 3 ohms and 40 ohms and can be bypassed.

There is rust and paint peeling.

Boost ratio　30db±0.5dB(3Ω)/20db±0.5dB(40Ω) Frequency range: 20-20,000Hz±0.2dB

Frequency range: 20-20,000Hz ±0.2dB

RCA cable included