The Pyra-Sum is a passive summing mixer that has what other summing mixers don't multiple cascading busses.
The Whitestone Audio P331 Tube Loading Amplifier was developed to bring professional tracking, mix and mastering engineers versatile, elegant, precise and repeatable audio circuit variation.
Rupert Neve Designs 16 Channel +/- 21V Class-A mix buss for massive headroom and Dual-tap output transformers create rich harmonic character without clipping the next device in the chain.
32 Input input classic Neve Style Mixer with 4 Subgroups and Transformer Coupled Mix Bus
On Slot Technology, Maximum audio rails current, Maximum phantom power current: 140mA, Operating voltage: 100-240 VAC.
16 x 4 x 2-channel Summing Mixer with 2 Stereo Subgroups and 4 Aux. With Pan, Level, Insert and Mute
The Chandler Limited Mini Mixer is the culmination of Chandler's experience working with many types of vintage discrete circuits.
32 Channel Summing Mixer with 8 Mono Inputs, 24 Stereo Inputs, and 2 Stereo Outputs
Features, New Class-A Topologies, Custom Transformers, Texture & Silk Red / Blue, Talkback, Transport Controls, Monitor Source Selection, Monitor Select, Headphone Amplifier, Monitor Level, Meters, Dim switch, Stereo Input Channels 1-8, Stereo Inputs Channels 9-24, Stereo Buss Master.
Featuring New Class-A Topologies, Custom Transformers, Dual Stereo Outputs, Channel Level, Channel Pan, Master Output Level.