BM-U325MD 31.5" 4K/8K 1500nit 1,000,000:1 HDR Studio Monitor

› 31.5-inch 4K/UHD 3840×2160 resolution

› 2304 zones local dimming MINI-LED

› 1500nits, 1,000,000:1 contrast HDR 

› 100% DCI-P3 wide color gamut coverage

› VICO 1.97 A-class Eye Protecting LCD

› 12GSDI 4-in 4-out, 8K input ready, HDMI2.0 input

› 12GSDI via SFP Fiber input (Optional)

› ST2110 IP via SFP Fiber input (Optional)

› SFP Fiber 12G input converted to 12GSDI out

› 4 inputs Quadview, any 2 inputs PBP/PIP view

› HLG/PQ/S-log3 HDR, Payload ID auto setting

› 3DLUT Auto Self-calibration without PC

› Audio/Video 0 latency for post production

› Built-in Multi camera Delog Luts to 709/HLG/PQ

› User 3DLUTs upload via USB

› Waveform / Vector / Histogram / Eye pattern

› Focus assist / False color / Zebra

› 16-ch audio meters / Lissajous

› 5.1 & 7.1 surround sound phase pattern

› IP webserver remote control


1500nits  1,000,000:1 HDR

2304 zones local dimming Mini-LED

BM-U325MD adopts a 31.5-inch 4K/UHD resolution10-bit Mini-LED panel of 2304 zones local dimming backlight, with 1500nits high bright and 1,000,000:1 high contrast radio for HDR productions.  

Unique Local Dimming Mini-LED

SWIT has customized the Mini-LED drivers with advanced algorithms, to greatly restrain the halo effect and ensure H/V 178° full viewing angle.

Multi 4K/8K Interfaces

12GSDI 4-in 4-out, supports:
Single link 4K; Quad link 4K and Quad link 8K HDMI® 2.0 (4K60P)
12GSDI via SFP Fiber (Optional)
ST2110 IP via SFP Fiber (Optional)

* The Quadlink 4K/8K supports both SQD and 2SI;
* The SFP optical fiber adaptor is optional purchased.

4K/8K UHD Monitor

Supports Single link 4K input including 12GSDI, HDMI®2.0 or 12GSDI / ST.2110 via SFP, and Quad link 4x 3GSDI 4K or Quad link 4x 12GSDI 8K inputs with both SQD and 2SI modes.

Quadview, PBP, PIP

You can also input 4x independent 4K inputs for quadview, supports 12G/6G/3G/HD-SDI and HDMI® 2.0/1.4/1.3 mixed formats input, and waveform, vector, HDR/SDR gamma selection, color gamut selection, and UMD displays for each input window.
Beside Quadview, you can select any 2 inputs to display Pic-by-Pic or Pic-in-Pic modes for convenient video productions.

VICO 1.97 Eye Protect

The Mini-LED panel also adopts Quantum Dot layer between screen and LED backlight, which changes the LED spectrum to reduce blue and balance the R/G/B peak, which will stimulate people’ s cone cells evenly, and reducing visual fatigue effectively.

The VICO (Visual Health and Comfort) testing scores 1.97, A class, to protect your eyes from long time video editting or broadcast studio productions.

HLG/PQ/S-Log3/Gamma 2.4 HDR

BM-U325MD has a native 1500nits high bright backlight and 1,000,000:1 contrast ratio, perfectly displays HLG (Hybrid Log Gamma), Dolby Vision PQ,  SONY S-Log3 HDR and Gamma 2.4 HDR content.


Payload ID Auto Setting

Support input video Payload ID identify and the monitor will automatically set HDR/SDR EOTFs, Color Gamut, Input range, Color space and Color depth according to the Payload ID info.

Multi CG & EOTF Viewing

Supports 1 input source copied to 4 windows and display different HDR/SDR gamma and color gamut simultaneously. You can get correct reference when producing HDR and SDR together.

3DLUT Auto Self-Calibration

By X-rite i1 or JETI Specbos 1211

Built-in 3DLUT calibration software, supports X-rite i1 and Jeti Specbos 1211 probes to directly connect with the monitor USB port.
The monitor generates color patterns and the color probes read the color, send color info to monitor via USB. Then the monitor compares the color difference and generate 3DLUT and calibrate itself automatically. Calibration time: X-rite i1 15min, Specbos 1211 45min Calibration result: ∆E≤1.0

Audio/Video Zero Latency

The monitor internal processing latency is less than20 lines against UHD 2160 lines, which means less than 0.01 frames to considered as zero latency for post productions. It’ s native zero latency processing, no compromise on video quality.

De-log 3DLuts

User 3DLuts cube upload

The monitor has built-in multi camera logs to HLG / PQ HDR or 709 SDR conversion 3DLuts. You can also upload user creative 3DLuts to monitor by USB disk, 17x17x17 cube supported.

Multiple Video Analysis Patterns

Audio Patterns

BM-U325MD supports 16-ch embedded audio meters display, and select any 2 channels audio to output via speaker or 3.5mm headphone socket;
And displays Lissajous pattern and 5.1&7.1 surround sound patterns for 4K productions.

Eye Pattern

Built-in eye pattern to check input video transmission quality via SDI cable, especially the 12GSDI quality.

Webserver IP Remote Control

BM-U325MD supports webserver remote control by Ethernet LAN connection.
Use computer web browser to open the monitor control panel, and select input sources, adjust picture parameters, set up video / audio functions and assign function keys, etc, without install any APP.

LCD Performance


31.5 inches

Display area




Aspect ratio






Color depth

1.073G colors, 10-bit

Signal process


Viewing angle

178°(H) /178°(V)


BNC ×4

12G/6G/3G/HD/SD-SDI input

HDMI® ×1

HDMI® 2.0 input

SFP ×1

Optical Fiber input (By optional SFP adaptor)

RS485 ×1

TSL 3.1/4.0 UMD input

RS485 ×1

GPI (Tally) input

RJ45 ×1

1000M Ethernet input for Webserver IP control


BNC ×4

12G/6G/3G/HD/SD-SDI loop output

RS485 ×1

TSL 3.1/4.0 UMD output

Analog audio

3.5mm headphone and speaker

Video Format

SDI 1/2/3/4

4096×2160p (60 / 59.94 / 50 / 30 / 29.97 / 25 / 24 / 23.98)

3840×2160p (60 / 59.94 / 50 / 30 / 29.97 / 25 / 24 / 23.98)
2048×1080p (60 / 59.94 / 50 / 30 / 29.97 / 25 / 24 / 23.98)
2048×1080i (50 / 59.94 / 60)
1080p (60 / 59.94 / 50 / 30 / 29.97 / 25 / 24 / 23.98)
1080i (60 / 59.94 / 50)
1080psf (30 / 29.97 / 25 / 24 / 23.98)
720p (60 / 59.94 / 50)
480i (59.94), 576I (50)

Quad Link 4K (Each channel)

2048×1080p (60 / 59.94 / 50 / 30 / 29.97 / 25 / 24 / 23.98)
1080p (60 / 59.94 / 50 / 30 / 29.97 / 25 / 24 / 23.98)

Quad Link 8K (Each channel)

4096×2160p (60 / 59.94 / 50 / 30 / 29.97 / 25 / 24 / 23.98)
3840×2160p (60 / 59.94 / 50 / 30 / 29.97 / 25 / 24 / 23.98)


4096×2160p (60 / 59.94 / 50 / 30 / 29.97 / 25 / 24 / 23.98)
3840×2160p (60 / 59.94 / 50 / 30 / 29.97 / 25 / 24 / 23.98)
1080p (60 / 59.94 / 50 / 30 / 29.97 / 25 / 24 / 23.98)
1080i (60 / 59.94 / 50)
720p (60 / 59.94 / 50)


Input voltage

AC 100-240V, 50/60Hz

Power consumption

≤ 200W

Working temperature


Working humidity


Storage temperature


Storage humidity




Net weight (main body)

Net 16.8kg; With package 22.4kg
Basic Package




  • X-rite i1 Display

    Colormeter Probe, EODIS3-DCOE, the dedicated OEM version for SWIT monitors

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