Shure SCM820-DAN Digital IntelliMix Automatic Mixer (Discontinued)

Availability: Discontinued
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Shure SKU: SCM820-DAN
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The following product has been discontinued.

The Shure SCM820-DAN Digital IntelliMix Automatic Mixer is an 8-channel digital automatic mixer designed for use in speech applications, including sound reinforcement, broadcasting and audio recording. It uses Intellimix technology to dramatically improve audio quality in any application where multiple microphones are required and to select channels to open to the mix bus, while attenuating other channels. It comes with a logic-enabled block connector with 8 inputs and features a Dante Digital Audio network interface card.

Digital audio is carried over standard Ethernet using shielded Cat5e (or higher) cables. Dante provides low latency, tight clock synchronization, and high Quality-of-Service (QoS) to provide reliable audio transport to a variety of Dante devices. Dante audio can coexist safely on the same network as IT and control data, or can be configured to use a dedicated network.

Note:Cat 5e cable is sold separately.

IntelliMix Technology

Delivers seamless automatic mixing and reduced background noise through dynamic channel gating and attenuation

NAT (Noise Adaptive Threshold) continuously adjusts the activation threshold for opening a channel

Number of Open Microphones Attenuation (NOMA) determines the amount of gain attenuation for a mix output when the number of active microphones changes

Last Mic Lock-On (LMLO) keeps the most recently activated microphone open until another microphone is activated

MaxBus ensures that only one channel is opened per sound source, reducing comb filtering for clear and intelligible speech

IntelliMix Modes offer five different mixer mode presets of reliable automixing styles (Classic, Smooth, Extreme, Custom, or Manual) to quickly tailor the mix for a particular application

Enhanced I/O Support

Logic-enabled block connector with 8 inputs

Per-channel direct outputs allows the mixer to be used as an insert processor

Mix A and B outputs with selectable mic or line level connect to a sound reinforcement system, mixing console, or recording device

Dual mixer operation enables routing of independent automixes to the mix A and B outputs, allowing two entirely different mixes to result from the same set of inputs

Aux inputs on both the front and back panel easily connect to media players

1/4" (6.35mm) stereo headphone output for channel solo and mix monitoring

Comprehensive Control

Channel control knobs allow quick adjustment of gain, limiter, and EQ settings, and solo/mute functions on input channels

Output mix controls and meters enable front-panel master gain and limiter control as well as signal monitoring

LED meter rings display input audio or IntelliMix gain levels for each channel

Browser-based control software delivers comprehensive software control, monitoring, routing, and configuration of all signals and settings and adds a parametric 8-band EQ

Advanced Networking

Dante digital networked audio enabled

Enables multi-channel audio networking over Ethernet

Control system compatible (AMX, Crestron)

Analog Performance
Channel Input Level Monitoring Configuration: Active Balanced 


Impedance: 5 kΩ 

Clipping Level: Line (-0): +20 dBV, Mic (+26): −6 dBV, Mic (+46): −26 dBV

Phantom Power 48 VDC, selectable per channel, 14 mA maximum




AUX Input Configuration: Stereo, Unbalanced 


Impedance: 10 kΩ 

Clipping Level: +10 dBV

Output Connectors (Analog) Mix Output


Configuration: Active Balanced 

Impedance: 350 Ω 

Clipping Level: Line (±0): +20 dBV, Aux (−20): 0 dBV, Mic (−46): −26 dBV



Output Direct



Configuration: Impedance Balanced 

Impedance: 150 Ω 

Max Output Level: +20 dBV



Headphone Output 1/4" (6.35 mm) TRS, 100 mW, 350 Ω, dual mono (will drive stereo phones)
Connector Block
Signal Processing
Converter 24-bit, 48 kHz, 113 dB dynamic range typical
Internal Processing 32-bit
Latency Analog to Analog


Single Device: 0.51 ms, In a Link Group 0.76 + 4TN

Analog to Dante

Single Device: 0.29 ms, In a Link Group 0.54 + 4TN

Dante to Analog

Single Device: 0.28 + TN, In a Link Group 0.53 + 5TN

Dante to Dante

Single Device: 0.06 + TN, In a Link Group 0.31 + 5TN



Processing Channel Input: Gain Adjustment Range: −110 to +18 dB
Low Cut: Corner: 25 Hz to 320 Hz, Slope: 12 dB/octave
High Shelf: Corner: 5 kHz, Slope: 12 dB/octave, Gain: −18 to +18 dB

Mix Output: Gain Adjustment Range: −110 to +18 dB
Low Shelf: Corner: 25 Hz to 20 kHz, Slope: 12 dB/octave, Gain: −18 to +18 dB
High Shelf: Corner: 25 Hz to 20 kHz, Slope: 12 dB/octave, Gain: −18 to +18 dB
6-Band PEQ: 25 Hz to 20 kHz, ±18 dB, Bandwidth: 1/70 to 4 octaves
Limiter: Ratio: 10:1
Threshold: −50 to −2 dBFS
Attack: 0.1 ms
Decay: 100 ms
Network Interface Dual Port, Gigabit Ethernet, Dante digital audio
Cable Requirements Cat 5e or higher, shielded, 328' (100 m) maximum
Network Addressing Capability DHCP, link-local, static
Dynamic Range Analog-to-Dante, Dante-to-Analog: 113 dB (20 Hz to 20 kHz, A-weighed, typical)
Output Noise Output Pad
Line (+0): -90 dBV
Aux (-20): -110 dBV
Mic (-46): -135 dBV
at 20 Hz to 20 kHz, A-Weighted, one channel open
Equivalent Input Noise Input Gain Setting
Line (+0): -93 dBV
Mic (+26): -118 dBV
Mic (+46): -130 dBV
at 20 Hz to 20 kHz, A-Weighted, input terminated with 150 Ω, digital gain at +18 dB
THD + N < 0.05 %
1 kHz, +4 dBu out, mix output (Master) at +0 dB
Common Mode Rejection Ratio > 70 dB
150 Ω balanced source, at 1 kHz
Polarity Non-inverting, any input to any output
Housing Steel; Extruded aluminum
Power Requirements 100 to 240 VAC, 50 to 60 Hz, 1 A
Operating Temperature Range 0 to 145°F (-18 to +63°C)
Storage Temperature Range -20 to +165°F (−29 to +74°C)
Dimensions 1.7 x 19.0 x 11.4" (43.1 x 482.6 x 289.5 mm)
Weight 12.0 lb (5.4 kg)
Packaging Info
Package Weight 11.95 lb
Box Dimensions (LxWxH) 22.1 x 15 x 2.8"

At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.

  • Most in-stock orders placed Monday-Friday before 1PM PST ship the same day. Orders placed after 1PM will ship the next day of business. General restrictions apply; please see our full shipping policy here.
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