16 Channel Passive Summing Mixer – 3-Way XLR Output Mastering Edition – Neve 1073DPX – Focusrite Liquid Channel – RME UFX III

Precision Passive Summing for Modern Hybrid Studios

The VintageMaker 16-Channel Passive Summing Mixer is designed for engineers who want to extract the maximum sonic depth from their analog gear while keeping the signal path as pure as possible.

This custom mastering configuration allows three completely independent output paths, each optimized for a different mic preamp or analog gain stage.

Instead of a master volume potentiometer, each output uses a dedicated fixed attenuation network, ensuring optimal impedance matching and maximum audio transparency. This approach allows the user to drive external microphone preamps or transformer stages for harmonic saturation, depth and analog character, while maintaining optimal signal-to-noise ratio.

New to analog summing? read more: https://vintagemaker.net/analogsummingmixer/

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Three Independent Output Stages

A 3-way rotary selector allows switching between outputs A / B / C, ensuring that only one output is active at a time.
This prevents parallel loading and preserves the integrity of the passive summing network.

Output A – RME UFX III

Output B – Focusrite Liquid Channel

Output C – Neve 1073DPX

Read more about Mono Channel: https://vintagemaker.net/mono-channel-conversion-switch/

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Specifications

• Channels: 16
• Input Type: Balanced TRS
• Output 3 Independent Outputs with rotary selector
• Design: Passive Analog Summing Circuit
• Circuit: Floating Differential Sum Bus — designed by Vintagemaker
• Resistors: Studio grade Vishay Dale military metal-film resistors
• Signal Path: Stereo Balanced Discrete In/Out
• Insertion Input Resistance:  -25dB
• Output Impedance: 600–1k Ohms Balanced
• Frequency Response: 0–500kHz
• Crosstalk at 1kHz: -95dB
• Signal to Noise Ratio (SNR): -110dB
• Form Factor: Rackmount
• Enclosure: Laser engraved massive aluminium alloy box
• Build: Pure handmade — hand wired and tested point-to-point
• Compatibility: Universal DAW / Interface

Maximum level > +28dBu • Noise floor < -94.5dBu 22Hz-22kHz bandwidth
THD+N < 0.004% • IMD < 0.004%
Crosstalk rejection (Passive Section) > 110dB

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Build time: 15 Working Weekdays after cleared payment