OTB16 16 CH Summing Mixer

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Item: N13-2249

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OTB16 16 CH Summing Mixer


When your final mix matters, trust Tonelux's summing mixer for superior sound. This amazing 16-channel summing amplifier provides unrivaled stereo summing. Each channel in the 1U OTB16 summing amplifier features its own independent level control and panning association. A pair of 8-channel D-SUB inputs make hooking up the OTB16 easy, without sacrificing rack space. What's more, you can use the OTB16's pre-fader monitor outputs and auxiliary inputs to daisy-chain additional Tonelux OTB16 mixers to expand your system.

When it comes to natural sound, nothing beats the natural tone of analog summing. That's why Tonelux built to affordable, mastering-quality OTB16 summing amplifier. With a full 16-channels of adjustable input, the OTB16 is ready for sessions with large stem counts.

Tonelux spared no expense when they built the OTB16 summing mixer. Equipped with world-famous Tonelux TX-240 and TC-260 discrete op-amps and top-quality transformers, the OTB16 lets your mix flow together naturally for maximum sound quality.

Need more than 16 channels of summing? No problem! The Tonelux OTB16 features a pair of pre-transformer outputs, which you can rout into another OTB16's mix bus inputs. That lets you add more OTB16 summing mixers - as many as your mix needs!


  • Powerful summing in a pint-sized package
  • Built with top-quality components
  • Expandable design lets you built the system you need
  • 16-channel 1U mixer with 16 balanced inputs and a Tonelux discrete summing bus
  • Each channel has a level control and a panner
  • 2 x 8-channel D-SUB inputs (at +4dBu)
  • Famous Tonelux TX-240 and TX-260 discrete op-amps for summing
  • Main output transformer can be adjusted by the master fader pot
  • XLR main and pre-transformer monitor outputs
  • 2 x balanced TRS inputs feed the mix bus, allowing you to daisy-chain units

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  • Channels: 16
  • Inputs - Line: 16 D-SUB + 2 x TRS
  • Outputs - Main: 2 x XLR MIX + 2 x XLR Pre-transformer
  • 19" Rackmount Chassis

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