OMNITRONIC ELA-T10 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 1.25 W, 2.5 W, 5 W, 7.5 W, and 10 W RMS. The transformer supports 4 Ω, 8 Ω, and 16 Ω connections, has a frequency range of 30–15,000 Hz, and measures 7.6 × 4.3 × 4.1 cm with a weight of 0.27 kg.