Our take
BIGASUO's product page identifies the B-509 as a home theater projector with native 1920 × 1080 resolution. The exact brightness basis is unresolved across the reviewed materials, so the most responsible comparison begins with the native format and external-source setup rather than a headline lumen number.
Home video from external devices when Full HD resolution is useful and room geometry can be verified.
Do not shortlist it for a required ANSI minimum, measured UST fit, battery operation, or built-in protected streaming unless an exact model document confirms those details.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The manufacturer page explicitly identifies model B-509 and native Full HD resolution.
- HDMI, AV, and USB connections allow use with external playback devices.
- The product is positioned for home video rather than only business slides.
What to weigh up
- A 7500L product claim and an 8000L manual copy conflict and do not establish ANSI output.
- The saved sources do not provide a reliable throw ratio or UST classification.
- Protected streaming is directed to an external player rather than an integrated app platform.
The key details
| Model covered | B-509 |
|---|---|
| Image format | Native Full HD 1920 × 1080 |
| Rated light output | Brightness method and exact rating unresolved |
| Placement | HDMI, AV, USB and Bluetooth; streaming stick required for protected services |
Performance figures are manufacturer claims. Source checked October 5, 2026. Regional models and included accessories can differ.
What the features mean for you
Use the verified Full HD fact as the starting point
The BIGASUO product page names the B-509 and describes native 1920 × 1080 resolution. That identifies a Full HD image grid, which can be useful for movies and video sources at common HD formats. It does not determine sharpness, contrast, color accuracy, focus uniformity, or performance at a particular screen size. Those characteristics depend on the optics, settings, surface, room, and condition of the individual unit. Confirm that the model label is B-509 and that the menu and source connections correspond to the exact model. A Full HD label is a meaningful specification, but should not be expanded into a claim about overall cinema quality.
Keep conflicting light-output claims out of a numeric match
The reviewed product material advertises 7500L, while the manual copy reports 8000L. Neither source establishes a standardized ANSI rating, and the difference makes a single exact lumen claim especially unsuitable for comparison. This profile leaves ANSI output unknown rather than choosing whichever headline sounds more favorable. If brightness is central to a purchase, obtain the original manual or manufacturer confirmation for the precise B-509 revision and method. A seller's image at the intended size is still useful for an individual example, though it is not a calibrated test. Room light, screen size, source mode, and projector condition remain part of the decision.
Do not guess distance from the word home theater
The saved exact-model sources establish the B-509 identity and Full HD format but do not provide a verified throw ratio. That leaves a real installation question open: the projector cannot be confidently classified for close-wall placement or promised to form a particular screen size at a fixed distance. Measure an example on a temporary surface or request a B-509 projection chart before choosing a shelf or mount. Digital zoom can reduce an image in software but does not replace optical geometry and may discard pixels. Keep ultra-short-throw status and lens shift unknown until an exact source resolves them. This is particularly important in a living room where a cabinet position may be fixed.
Use HDMI or another source for protected streaming
BIGASUO lists HDMI, AV, and USB connections and Bluetooth. The saved manual instructs users to use an external TV stick for protected streaming services, so wireless labels should not be read as proof of an integrated Netflix-style platform. Choose a source device that supports the apps and video timing you need, then check whether its power, remote, and audio connection will work with the B-509. USB playback is a separate function from a subscription app ecosystem. This model makes more sense when the owner already plans to connect a streaming stick, laptop, console, or player rather than expecting the projector to handle every source on its own.
A home selection with several unresolved purchase checks
The B-509 merits consideration as a Full HD external-source home projector, but the evidence does not settle its brightness method, placement, battery operation, or physical light source. Avoid using the headline claims to rank it against models with clear ANSI values and throw charts. Confirm the model label, focus range, ports, sound, Bluetooth behavior, power adapter, ventilation, and remote on the unit under consideration. Ask what accessories are actually included because package contents can differ from product-page imagery. The sources reviewed support model-level features, not an individual seller's condition or current stock. This assessment uses documented selection criteria and does not claim personal hands-on testing.
What else to compare
BenQ TH685 offers documented Full HD and 3500 ANSI lumens with a conventional throw, while Optoma CinemaX D2 Smart is a documented UST option with a non-ANSI lumen figure.
Before you buy
What is the B509's native resolution?
The BIGASUO product page identifies the B-509 as native Full HD 1920 × 1080.
How many ANSI lumens does it produce?
The reviewed sources conflict on generic lumen figures and do not establish an ANSI rating, so no ANSI number is assigned.
Is the B509 an ultra-short-throw model?
The saved exact-model sources do not establish its throw ratio; verify projection distance before choosing a location.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources & review basis
We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- BIGASUO B-509 home theater projector product page ↗ — checked October 5, 2026.
- BIGASUO B-509 product page ↗ — checked October 5, 2026.
- B509 model manual copy ↗ — checked October 5, 2026.
The decision
B-509 is a Full HD home projector worth considering only when the buyer accepts unresolved brightness and placement facts and plans an external source.
Is it the right fit?
Check the exact model and today’s offers on Amazon.