Summary

27" Advent-branded HD CRT from 2003. Originally manufactured by Prima in China. Has component at best, no digital inputs. A fairly basic HD CRT.

Manuals

• User Manual
• Service Manual
• Official Webpage

Notes

In the provided examples of 480p the image is rather soft, likely due to the scaler employing a filter on all the signals. (480i, 480p, and 720p are all scaled to 1080i, as far as I can tell.) The set also has velocity modulation for cleaning up dot crawl in composite video. If you wish to to disable it, you must unplug a jumper from the neckboard. It can do PAL and SECAM over the AV inputs, but it might be converted to NTSC.

What is more of a letdown is that their is color banding in the signal. I suspect it is a result of color gamut conversion, though I am not certain. The jungle chip is by Micronas, though I'm not sure that it is entirely to blame for this problem.

Tube is a special Toshiba microfilter model with made in Japan. This same tube was also used in Japanese candy cabs like the New Net City. So while the picture processing is lackluster, at least the tube is still excellent.

Apparently this chassis was also used in Quasimoto QuasicadePRO multicade cabinet from 2005: Article

Toshiba Microfilter Technology

This CRT uses Microfilter, a technology innovation by Toshiba that aimed to optimize both brightness and contrast without darkening the glass with tint.

Conventionally, most tubes have a dark tint layer in the glass to reduce the amount of light reflection or absorption of the glass, thereby increasing contrast performance - a trade that costs an average 30% loss of overall brightness in all ambient light conditions (including near-darkness). In comparison, clear glass on a tube has the advantage of maximum brightness emission - but at a huge loss of contrast in normal ambient light conditions due to increased reflection. Typically you'll only find clear glass on professional broadcast monitors (aka BVM) that are intended to be used in near-darkness where ambient light is not an concern.

Microfilter aimed to be the best of both worlds by achieving the necessary amount of ambient light filtering at a per-phosphor (micro) level without sacrificing brightness, while still providing the vivid contrast you could typically only expect from a dark-tinted lower-brightness tube. On a Microfilter tube, the glass itself remains clear for maximum light transmission, while still taking a darkened grey-purple appearance from a combination of both the AR coatings and Microfilter over the phosphors.

You can learn more about Microfilter in our full article.