Tegeler Audio Tube Summing Mixer

The Tegeler Audio Tube Summing Mixer is a 40-channel analog summing mixer built around a tube and transformer signal path, designed for engineers who want the character of a large-format analog console without abandoning the recall and flexibility of a digital workflow. Two banks of 20 inputs handle even the most track-heavy sessions, and multiple units can be cascaded when input count needs to scale further—including surround applications. A stepped output attenuator replaces the standard potentiometer, making level settings fully repeatable across sessions. For Los Angeles producers and mixing engineers ready to take their stems out of the box, the Tegeler Audio Tube Summing Mixer delivers a wide, open analog sound without requiring a dedicated console room.

Key Features

• 2 × 20 channel inputs (40 total) — two independent banks of 20 inputs provide enough capacity for large, complex mixes, with all channels running through the same analog signal path.
• Tube and transformer signal path — the analog summing circuit uses tubes and matching transformers to produce the open, defined, and warm character associated with classic analog console mixing.
• Cascadable design — multiple Tube Summing Mixers can be linked together to expand the total input count, supporting large-format mixes and multichannel surround configurations.
• Stepped output attenuator — a precision stepped switch replaces the standard output potentiometer, allowing level adjustments in –3 dB increments with exact, repeatable settings for consistent recall.
• Mono input summing via TRS — inserting a mono signal into the lower TRS jack automatically distributes it to both left and right channels, placing it at the phantom center of the stereo image without additional routing.
• Digital workflow compatibility — the summing architecture is designed to integrate into existing DAW-based sessions, combining the benefits of total recall with the sonic characteristics of analog summing.

Specifications

• Inputs: 2 × 20 channels (40 total)
• Input Connectors: TRS (stereo pairs); lower TRS jack for mono input summing
• Output Control: Stepped attenuator, –3 dB increments
• Signal Path: Tube and transformer (fully analog)
• Cascading: Supported — multiple units linkable for expanded input count and surround mixing