Fonolab QVATTVOR MC Step-Up June 18, 2023 Matej Isak Fonolab Lounge Contemporary Analog Audio QVATTVOR reference 4×4 balanced MC step-up transformer. It offers a minimum number of settings and a direct signal path. Specs: Input impedance: 0-3 / 40 Ohms Output impedance: 4k Ohms Frequency response: 10Hz to 120kHz (+0.5dB–1.0dB) Channel balance: within 0.5 dB Ratio: 1:33 / 1:10 Phase characteristics: Within 10° (20Hz–50kHz)