Product Description

Drawing upon the success of its predecessors in the UPMAX line, this compact, lightweight, and rugged unit produces stunning 5.1 channel audio from two-channel sources and is perfectly suited for OB trucks and post-production facilities.

Offering AES and auto-sensing HD/SD-SDI I/O, the UPMAX v4-D combines the renowned UPMAX® upmixing/downmixing algorithm with AutoMAX-II™ auto-detection for seamless transitions between stereo, three channel, and native surround input sources, producing an upmix that is completely downmix compatible.

The UPMAX v4-D comes standard with a built-in ITU loudness meter, dual power supplies, internal relay bypass, SNMP monitoring.

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Additional Information


Linear Acoustic UPMAX with AutoMAX-II


4.6 msec (SRC bypass), 7 msec (SRC On)


48kHz, 24-bit; Signal levels per SMPTE 276M/AES-3ID-2001; All connectors are 75-Ohm BNC female with internal 75-Ohm termination


Auto-sensing and de-embedding of up to 16 channels from applied SDI signal with upmixing and/or re-embedding up to 16 channels. Signal levels per SMPTE 292M/259M. Supports (SMPTE) 2020 A and B VANC metadata. Up to 1080i/60/59.94/50Hz supported

Parallel GPI/O Control Port

9-pin female D connector, 0-5v TTL levels

Serial/Metadata Input

9-pin female D connector, 115 kbps, pinout per SMPTE 207M (RS-422/485)/RDD6

Front Panel Controls and Indicators

Rotary encoder and graphical OLED display

Power Requirements

Dual, redundant 100-264 VAC, 50/60Hz, auto-sensing, 35W maximum

Dimensions and Weight

1RU – 1.75”H x 19”W x 11.5”D (44 x 483 x 317 mm)

Net weight: 6 lbs. (2.72 kg), approximate.

Shipping Dimensions and Weights

22”W x 17”D x 7”H (178 x 559 x 432 mm)

Net weight: 13 lbs. (5.9 kg), approximate.


Convection cooled. Operating: 0 to 50 degrees C, non-operating –20 to 70 degrees C.


Complies with the European Union Directive 2002/95/EC on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS), as amended by Commission Decisions 2005/618/EC, 2005/717/ EC, 2005/747/EC (RoHS Directive), and WEEE.


Standard 2-year limited parts and labor

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