OMNITRONIC ELA-T100 is a passive 100 V audio transformer for amplifiers or speakers without an integrated 100 V transformer. It converts low-impedance audio signals to 100 V signals and provides five selectable power taps at 12.5 W, 25 W, 50 W, 75 W, and 100 W RMS. The transformer has a 30–15,000 Hz frequency range, supports 4, 8, and 16 ohm impedance, and measures 9.3 × 6.6 × 6 cm with a weight of 1.01 kg.