Tegeler Audio Tube Summing Mixer - 40-Channel All-Analog Tube Summing
The Tegeler Audio Tube Summing Mixer is a high-end, all-analog 40-channel summing mixer that infuses mixes with the rich harmonic warmth, depth, and musical glue only real tubes can provide. Hand-built in Germany with premium NOS tubes, custom transformers, and discrete Class-A circuitry, it delivers the legendary analogue cohesion and stereo width that digital summing simply cannot replicate. With 40 balanced inputs, flexible routing, stepped controls for recall, and transformer-balanced output stages, the Tube Summing Mixer is the ultimate centerpiece for hybrid studios seeking authentic tube character on mix bus and stems.
Real Tube Summing Engine
At its core, the Tegeler Tube Summing Mixer uses multiple NOS tubes (ECC83/ECC82 or equivalent) in a carefully designed summing amplifier stage to add organic harmonics, subtle saturation, and three-dimensional depth. Unlike digital or op-amp summing, the tube circuitry imparts a musical euphonic distortion and natural compression that “glues” elements together, widens the stereo image, and enhances perceived loudness without artificial limiting. The result is mixes that sound bigger, warmer, and more cohesive — the unmistakable analogue magic engineers chase.
40-Channel Analog Summing
With 40 balanced line inputs (DB25 or XLR), the mixer handles large sessions with ease — from full multitrack stems to subgroup summing. Inputs are grouped in 8-channel blocks with individual level trims and pan controls (optional stepped attenuators), allowing precise balance and stereo placement. The passive or active summing network feeds into the tube output stage, where the analogue coloration is applied for maximum musicality and depth.
Key Features of the Tegeler Audio Tube Summing Mixer
- 40-channel all-analog tube summing mixer
- Multiple NOS tubes for authentic harmonic warmth and glue
- Custom input and output transformers for vintage character
- 40 balanced line inputs (DB25 or XLR)
- Individual channel level trims and pan controls
- Stepped controls for accurate recall
- Transformer-balanced stereo XLR outputs
- True bypass and internal linear power supply
- Hand-built in Germany
Technical Specifications
- Type: 40-channel analog tube summing mixer
- Inputs: 40 × balanced line (DB25 or XLR)
- Outputs: Stereo XLR balanced (main)
- Max Input/Output Level: +24 dBu
- Frequency Response: 10 Hz–60 kHz (±0.5 dB)
- THD+N: <0.05% (typical, with tube coloration)
- Noise Floor:
- Power: Internal linear PSU, 115/230 V AC
- Dimensions: 19 × 3.5 × 12 in (482 × 88 × 305 mm)
- Weight: 15–18 lbs (7–8 kg)
