... convenient for home use! Specification:channels: 4 channeils, plus two enhanced channels (1+2), (3+4)Waveform : asymmetric plus wave preposition ... ~100HzOutput voltage : each channel -18v( 250 Ω loading), 26V ( 500 Ω loading) enhanced hannel ( 1+2,3+4)-22v( 250 Ω loading), 36v ( 500 ...