The OTB16 is a 16 channel 1U mixer with 16 balanced inputs and a Tonelux discrete summing bus.
Each channel has a level control and a pannerThe access to the OTB16 is through 2 eight channel Dsub inputs at a level of +4dBu nominal.The summing of the 16 channels is through the famous Tonelux TX-240 and TX-260 discrete op-amps, and then throught the main output transformer, which can be adjusted by the MASTER fader pot, which comes out of a pair of XLR connectors.Additionally there is a monitor output for monitoring or for expansion, which is balanced but transformerless.2 additional balanced inputs to the MIX bus. The pre fader monitor output can be plugged into the BUS input to extend the number of channels with a second or third OTB16. 120 or 230 volts AC powered 50/60 Hz.