Shure SCM820 Digital IntelliMix Automatic Mixer
Product #65796 | SKU SCM820
Usually ships in 3 - 4 weeks
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Shure SCM820 Digital IntelliMix Automatic Mixer

Product #65796 | SKU SCM820
Usually ships in 3 - 4 weeks

8-channel mixer designed for use in speech applications, including sound reinforcement, broadcasting and audio recording.
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Product Details
  • Product: #65796
  • SKU: SCM820
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The Shure SCM820 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.

Key Features:

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 AEQ settings, and solo/mute functions on input channels
  • Output mix controls and metres enable front-panel master gain and limiter control as well as signal monitoring
  • LED metre 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 AEQ
Advanced Networking
  • Standard Ethernet networked audio configuration
  • Control system compatible (AMX, Crestron)


Analogue 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 (Analogue) 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
Convertor 24-bit, 48 kHz, 113 dB dynamic range typical
Internal Processing 32-bit
Latency Analogue to Analogue

Single Device: 0.51 ms

In a Link Group: 0.76 + 4TN


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 Single Port, 10/100 Mbps Ethernet
Cable Requirements Cat 5e or higher, shielded, 328' (100 m) maximum
Network Addressing Capability DHCP, link-local, static
Dynamic Range Analogue to Analogue: 110 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 aluminium
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 (H x W x D) 1.7 x 19.0 x 11.4" (43.1 x 482.6 x 289.5 mm)
Weight 12.0 lb (5.4 kg)

Delivery Times

Australian Shipping Via DHL
DHL now offer a great express shipping service to Australia from New Zealand. We are proud to be able to offer overnight shipping to main cities on the east coast of Australia. These main centers include:

  • Brisbane
  • Sydney
  • Adelaide

Whilst this service is extremely efficient and will be delivered overnight 99.9% of the time, it cannot be guaranteed. In the case where something were to go wrong with your delivery and it did not arrive overnight, it will most likely be delivered by the next day.

While not all major cities are eligible for overnight delivery, they still benefit from this great service. Other centers throughout Australia will have a typical delivery ETA of 2-4 days. (Excluding rural delivery address where this ETA can be extended to an additional three or more days).

If you require urgent shipping and you don’t reside in one of the cities stated above, please contact us and we can find a solution that works best for you.

Please Note: Shipping via DHL is not available to PO boxes and/ or parcelboxes etc.

In The Box

  • Shure SCM820 Digital IntelliMix Automatic Mixer.


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  • Product: Shure SCM820 Digital IntelliMix Automatic Mixer
  • Manufacturer: Shure
  • Model: SCM820
  • SKU: SCM820
  • RM Product #: 65796
  • Warranty: 2 year manufacturer warranty (excluding consumable e.g. lithium-ion batteries).