ViewSonic X1-4KE Pro in its exact UK manufacturer catalogue configuration. Compare the declared projected image, actual light-source and brightness basis, optical placement and source-listed inputs together.
Specifications checked 17 Oct 2026.
Amazon links open search results. Check the exact variant, current price and availability with the retailer.
ViewSonic LS901-4K in its exact UK manufacturer catalogue configuration. Compare the declared projected image, actual light-source and brightness basis, optical placement and source-listed inputs together.
Specifications checked 17 Oct 2026.
Amazon links open search results. Check the exact variant, current price and availability with the retailer.
Search links open retailer results, not a matched listing; eBay listings are checked daily. As an Amazon Associate I earn from qualifying purchases. As an eBay Partner, we may be compensated if you make a purchase.
THE DIFFERENCES, MADE VISIBLE
Visual facts
Differences first. Select a topic for its graphic, sources and conditions.
How to read this comparison
Manufacturer facts for the exact models shown. Not a quality rating or a test result.
“Different” means the known values differ, not that one is better.
Missing or conflicting evidence is marked and never counts as a difference. Source chips hold each fact’s sources and conditions.
SPECIFICATIONS SIDE BY SIDE7 topics
SELECTED TOPIC
01 / 07
Projection technology
Check the exact configuration and source conditions for your use.
Match the screen, lens and room. Check the stated throw ratio, lens setup and connections. ANSI, ISO, LED and centre-lumen claims keep their different measurement bases; they are not an overall picture-quality score. A projected 4K claim does not by itself identify the physical imager pixel grid. Accepted input modes remain separate.
Manufacturer specification · Manufacturer claim. The actual manufacturer lumen wording is preserved literally; no ANSI, ISO or other standardised measurement protocol is established by this field. Centre brightness, dynamic contrast and other lumen methods remain separate; no conversion or measured performance is asserted. Manufacturer section Specification. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Brightness.
Manufacturer specification · Manufacturer claim. Actual published method: ANSI lumens. Centre brightness, dynamic contrast and other lumen methods remain separate; no conversion or measured performance is asserted. Manufacturer section Specification. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Brightness.
ViewSonic X1-4KE Pro2 (HDMI 2.0, HDCP 1.4/2.2) (HDMI); USB Type C (1 (5V/1A)); Wifi Input (1 (5Gn)); 1 × Audio-out (3.5mm); Audio-out (Bluetooth) (1 (BT5.0)); 1 (eARC) (Share with HDMI Input) (Audio-out (HDMI ARC)); Speaker (6W Cube x2 (Full range x2)); 1 (USB2.0 - 5V/1A, share with USB A Service) (USB Type A (Power)); 1 × RS232 (DB 9-pin male); 1 × USB Type A (Services); USB-C Cable (1 (1m))
ViewSonic LS901-4K2 (HDMI 2.0, HDCP 2.3) (HDMI); 1 × Audio-out (3.5mm); Speaker (15W x2); USB Type A (Power) (1 (5V/1.5A)); 1 × RS232 (DB 9-pin male); 1 × RJ45 (LAN control); 1 (share with USB A Output) (USB Type A (Services))
Sources
ViewSonic X1-4KE Pro
Manufacturer specification · Source-listed physical inputs, outputs and controls. Service USB, power outputs, connector versions and eARC claims retain their separate scopes; no full-bandwidth or compatibility guarantee inferred. Manufacturer section Input. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: HDMI. Manufacturer section Input. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: USB Type C. Manufacturer section Input. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Wifi Input. Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Audio-out (3.5mm). Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Audio-out (Bluetooth). Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Audio-out (HDMI ARC). Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Speaker. Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: USB Type A (Power). Manufacturer section Control. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: RS232 (DB 9-pin male). Manufacturer section Control. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: USB Type A (Services). Manufacturer section Standard Accessory. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: USB-C Cable.
Manufacturer specification · Source-listed physical inputs, outputs and controls. Service USB, power outputs, connector versions and eARC claims retain their separate scopes; no full-bandwidth or compatibility guarantee inferred. Manufacturer section Input. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: HDMI. Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Audio-out (3.5mm). Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Speaker. Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: USB Type A (Power). Manufacturer section Control. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: RS232 (DB 9-pin male). Manufacturer section Control. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: RJ45 (LAN control). Manufacturer section Control. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: USB Type A (Services).
Manufacturer specification · Manufacturer axes, original measurement units and foot/handle/configuration basis remain literal. Packaging dimensions are separate. Manufacturer section Others. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Dimensions (WxDxH) with Adjustment Foot.
Manufacturer specification · Manufacturer axes, original measurement units and foot/handle/configuration basis remain literal. Packaging dimensions are separate. Manufacturer section Others. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Dimensions (WxDxH) with Adjustment Foot.
Manufacturer specification · Manufacturer Net Weight: 3.68kg. Kilograms normalized to grams; packaging/gross mass and separately listed accessories are not substituted.
Manufacturer specification · Manufacturer Net Weight: 4.85kg (10.69 lbs). Kilograms normalized to grams; packaging/gross mass and separately listed accessories are not substituted.
A size or weight trade-off; it does not establish the better product.
Missing or non-comparable evidence (15)
Physical imager pixel grid
ViewSonic X1-4KE ProNot verified
ViewSonic LS901-4KNot verified
Sources
ViewSonic X1-4KE Pro
A physical imager pixel grid is not separately established by these supplied sources. The declared display/projected resolution and chip diagonal do not fill this field. · Manufacturer specification
A physical imager pixel grid is not separately established by these supplied sources. The declared display/projected resolution and chip diagonal do not fill this field. · Manufacturer specification
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Published ANSI brightness
ViewSonic X1-4KE ProNot verified
ViewSonic LS901-4K5500 ANSI lm
Sources
ViewSonic X1-4KE Pro
No source recorded for this side.
ViewSonic LS901-4K
Manufacturer specification · Actual source field Brightness: 5500 (ANSI Lumens). Manufacturer measurement/mode qualifications remain in the full specifications; no cross-method conversion.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Remote Control
ViewSonic X1-4KE Pro1 (BT w/ backlit)
ViewSonic LS901-4K1
Sources
ViewSonic X1-4KE Pro
Manufacturer specification · Manufacturer section Standard Accessory. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected.
Manufacturer specification · Manufacturer section Standard Accessory. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected.
One source states less detail or a rounded figure. This is not a verified difference; check the exact configuration.
USB-C Cable
ViewSonic X1-4KE Pro1 (1m)
ViewSonic LS901-4KNot verified
Sources
ViewSonic X1-4KE Pro
Manufacturer specification · Manufacturer section Standard Accessory. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Warranty Card
ViewSonic X1-4KE ProNot verified
ViewSonic LS901-4KYes (CN Only)
Sources
ViewSonic X1-4KE Pro
No source recorded for this side.
ViewSonic LS901-4K
Manufacturer specification · Manufacturer section Standard Accessory. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
15 shared fields have the same recorded value.
WHAT EACH CHOICE ASKS OF YOU
What it brings and what to check
ViewSonic X1-4KE Pro
What it brings
The manufacturer supplies model-specific projection, placement and connection specifications. Use the stated throw ratio, actual image size and lens configuration to plan your installation.
Manufacturer image and brightness claims are not an independent picture-quality test. Physical imager pixels, input limits, measurement methods, bundled TV devices and regional accessories need their own stated source scope; no overall winner or current stock is established.
The manufacturer supplies model-specific projection, placement and connection specifications. Use the stated throw ratio, actual image size and lens configuration to plan your installation.
Manufacturer image and brightness claims are not an independent picture-quality test. Physical imager pixels, input limits, measurement methods, bundled TV devices and regional accessories need their own stated source scope; no overall winner or current stock is established.
Source-backed specifications for ViewSonic X1-4KE Pro and ViewSonic LS901-4K
Specification
ViewSonic X1-4KE Pro
ViewSonic LS901-4K
Projected resolutionSources
ViewSonic X1-4KE Pro
Manufacturer specification · Source label Native Resolution. This is the manufacturer display/projected-image claim; it does not independently establish the physical DMD/imager pixel grid. Accepted signal resolution remains separate.
Manufacturer specification · Source label Native Resolution. This is the manufacturer display/projected-image claim; it does not independently establish the physical DMD/imager pixel grid. Accepted signal resolution remains separate.
Manufacturer specification · Manufacturer claim. The actual manufacturer lumen wording is preserved literally; no ANSI, ISO or other standardised measurement protocol is established by this field. Centre brightness, dynamic contrast and other lumen methods remain separate; no conversion or measured performance is asserted. Manufacturer section Specification. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Brightness.
Manufacturer specification · Manufacturer claim. Actual published method: ANSI lumens. Centre brightness, dynamic contrast and other lumen methods remain separate; no conversion or measured performance is asserted. Manufacturer section Specification. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Brightness.
Manufacturer specification · Actual source field Brightness: 5500 (ANSI Lumens). Manufacturer measurement/mode qualifications remain in the full specifications; no cross-method conversion.
Manufacturer specification · Source-listed physical inputs, outputs and controls. Service USB, power outputs, connector versions and eARC claims retain their separate scopes; no full-bandwidth or compatibility guarantee inferred. Manufacturer section Input. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: HDMI. Manufacturer section Input. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: USB Type C. Manufacturer section Input. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Wifi Input. Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Audio-out (3.5mm). Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Audio-out (Bluetooth). Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Audio-out (HDMI ARC). Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Speaker. Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: USB Type A (Power). Manufacturer section Control. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: RS232 (DB 9-pin male). Manufacturer section Control. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: USB Type A (Services). Manufacturer section Standard Accessory. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: USB-C Cable.
Manufacturer specification · Source-listed physical inputs, outputs and controls. Service USB, power outputs, connector versions and eARC claims retain their separate scopes; no full-bandwidth or compatibility guarantee inferred. Manufacturer section Input. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: HDMI. Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Audio-out (3.5mm). Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Speaker. Manufacturer section Output. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: USB Type A (Power). Manufacturer section Control. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: RS232 (DB 9-pin male). Manufacturer section Control. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: RJ45 (LAN control). Manufacturer section Control. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: USB Type A (Services).
2 (HDMI 2.0, HDCP 1.4/2.2) (HDMI); USB Type C (1 (5V/1A)); Wifi Input (1 (5Gn)); 1 × Audio-out (3.5mm); Audio-out (Bluetooth) (1 (BT5.0)); 1 (eARC) (Share with HDMI Input) (Audio-out (HDMI ARC)); Speaker (6W Cube x2 (Full range x2)); 1 (USB2.0 - 5V/1A, share with USB A Service) (USB Type A (Power)); 1 × RS232 (DB 9-pin male); 1 × USB Type A (Services); USB-C Cable (1 (1m))
2 (HDMI 2.0, HDCP 2.3) (HDMI); 1 × Audio-out (3.5mm); Speaker (15W x2); USB Type A (Power) (1 (5V/1.5A)); 1 × RS232 (DB 9-pin male); 1 × RJ45 (LAN control); 1 (share with USB A Output) (USB Type A (Services))
Input LagSources
ViewSonic X1-4KE Pro
Manufacturer specification · Manufacturer section Specification. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected.
Manufacturer specification · Manufacturer section Standard Accessory. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected.
Manufacturer specification · Manufacturer section Standard Accessory. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected.
Manufacturer specification · Manufacturer section Standard Accessory. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected.
Manufacturer specification · Manufacturer section Standard Accessory. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected.
Manufacturer specification · Manufacturer section Standard Accessory. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected.
Manufacturer specification · Manufacturer section Standard Accessory. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected.
Manufacturer specification · Manufacturer axes, original measurement units and foot/handle/configuration basis remain literal. Packaging dimensions are separate. Manufacturer section Others. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Dimensions (WxDxH) with Adjustment Foot.
Manufacturer specification · Manufacturer axes, original measurement units and foot/handle/configuration basis remain literal. Packaging dimensions are separate. Manufacturer section Others. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected. Source field: Dimensions (WxDxH) with Adjustment Foot.
Manufacturer specification · Manufacturer Net Weight: 3.68kg. Kilograms normalized to grams; packaging/gross mass and separately listed accessories are not substituted.
Manufacturer specification · Manufacturer Net Weight: 4.85kg (10.69 lbs). Kilograms normalized to grams; packaging/gross mass and separately listed accessories are not substituted.
Manufacturer specification · Manufacturer section Standard Accessory. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected.
Manufacturer specification · Manufacturer section Standard Accessory. Original units, optical/digital basis, input modes, test qualifications and regional accessory scope retained. No apparent source error is silently corrected.
Show unverified (1)Not verified, not provided or conflicting for both products. Kept for completeness; never counted as a difference.
Specifications without verified values for either product
Physical imager pixel gridSources
ViewSonic X1-4KE Pro
A physical imager pixel grid is not separately established by these supplied sources. The declared display/projected resolution and chip diagonal do not fill this field. · Manufacturer specification
A physical imager pixel grid is not separately established by these supplied sources. The declared display/projected resolution and chip diagonal do not fill this field. · Manufacturer specification
Each record represents an explicitly checked model and configuration. Original import: 5 Sept 2026; this is not its verification date. This is not a list of current offers or a popularity ranking.
