Lake People summing amplifier F833, 2 x 4 in 1 / 4 x 2 in 1, 2 x 2 identical sections with two balanced inputs and one balanced output each (4 x 2 in 1), front operated switch for 2 x 2 in 1 or 4 in 1 operation. In this case, the output signal is splitted and present on both outputs, rear inputs electronically balanced via XLR, XLR sockets with gold plated contacts, Optimized for line-level signals, impedance 20 kohms, differencial input circuits specialized for highest common mode rejection ratio (CMRR), internal filters to reduce the bandwidth to a safe and useful range from 5 Hz to 40 kHz (-1 dB), Front accessible multiturn trimpots for level adjustment with a range from -12 to +12 dB, balancing of the output signals with optimized circuits for highest resistance- and voltage common, mode rejection ratio (CMRR), output impedance 30 ohms according to IRT rules, XLR type output sockets with gold plated contacts,