The line matching 100W transformer shall be Lowell Model TLM-10070A. Primary voltage shall be 70V with a power rating of 100 watts. Primary taps shall be available at 100/64/32/16 watts. Secondary impedance taps shall be available at 8 ohms and 4 ohms. All taps shall have clearly marked color-coded leads. Frequency response of the transformer shall be 50Hz–15kHz (±1dB) with insertion loss not to exceed 0.6 dB.