Sony Reader Digital Book PRS-505 review: Sony Reader Digital Book PRS-505

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CNET Editors' Rating

3.5 stars Very good
Review Date:
Updated on:

The Good Electronic book that can hold thousands of titles; excellent high-contrast screen rivals that of printed page and is easy to read in bright environments; some design and performance improvements versus first-gen model; 128MB internal memory, with more available via SD and Memory Stick Pro expansion slots; font size adjusts at the touch of a button; good battery life; also displays PDF and Word files, and plays MP3 files.

The Bad Downloadable titles are expensive and only available through Sony's online store; AC adapter is an optional accessory (you charge the PRS-505 by connecting the included USB cable to your computer); desktop software isn't available for Mac owners; PDF files are hard to read because they're reduced to fit the screen and you can't magnify (zoom) them; though diminished, some lag issues remain when flipping pages; no support for Audible audio books.

The Bottom Line While the PRS-505 Reader Digital Book is not without flaws, Sony's improvements make this model easier to recommend.

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Editor's note: As of September 2009, the PRS-505 reviewed here has been been replaced by the Reader Pocket Edition PRS-300 and the Reader Touch Edition PRS-600.

In early 2007, Sony put out the PRS-500 Portable Reader System, which most people know as the Sony Reader. While Sony got a lot right with the PRS-500, critics--this one included--noted a handful of shortcomings that made the potentially groundbreaking e-book reader less appealing than it should have been. Now, less than year since the PRS-500's release, Sony has released the PRS-505 "Reader Digital Book," which also retails for $300. On the surface, the two Readers look pretty similar, but the new PRS-505 boasts some subtle yet important improvements.

For starters, Sony has made the new Reader slimmer by about 0.2 inch--though not any lighter. At 6.9 inches high by 4.9 inches wide by 0.3 inch deep, the Reader is somewhere between the size of a standard DVD case and a short trade paperback novel. It's bound in a leather protective cover, and weighs about 9 ounces. The new reader is available in two colors: silver or metallic blue.


The Reader is roughly the size of a trade paperback, but it can hold several thousand titles and documents.

The new Reader has the same overall design as the original model--it looks like an oversized PDA, with the screen taking up the top three-quarters of the front panel. As part of the upgrade, Sony's sought to simplify the button layout and navigation on the Reader. The results are mostly successful, but some quirky elements remain. The little raised joystick-like navigation button has been replaced with a flatter four-way nav button with an "Enter" button in the middle. We preferred this arrangement but found the directional pad a tad stiff (perhaps it will loosen up with time).

There are still two separate buttons for turning pages, but that's an effort to accommodate left- and right-handed people. There are basically two ways that you hold the device in your hand, and depending on how you're holding it, your left thumb will either be resting on the left bottom corner of the device or higher up on its side, where a second set of page-turning buttons sit. It's also worth noting that Sony's moved the memory expansion slots from the side of the device to the top, making them easier to access.


Memory expansion is available via SD and Memory Stick Pro slots found on the Reader's top edge.

In other improvements, the 600x800-pixel screen--or approximately 170 pixels per inch, according to Sony--now offers eight scales of gray instead of four-grayscale (the screen measures approximately 4.9x3.6 inches), which increases the contrast ratio and makes it slightly easier to read. The first thing you notice about the screen when you turn on the device (it takes a few seconds to fire up after you slide the power switch) is that it's a high-contrast monochrome display that isn't backlit. Technically, it's an electrophoretic display, which Wikipedia describes as "an information display that forms visible images by rearranging charged pigment particles using an applied electric field."

Like some other electronic paper products, the Reader uses "E Ink" technology, which serves to make the letters and words on the screen look more printlike in their appearance--it's quite impressive if you haven't seen the technology in action before. With the Size button, you can choose among three font settings (small, medium, and large), but even at the smallest setting, you're still getting fewer lines per page than you would with a printed book. For example, George Orwell's 1984 comes out to 767 pages on the Reader (on the medium font size), far longer than the printed version. You can also switch between landscape and portrait mode, though chances are you'll naturally hold the device vertically like a book and stick to portrait mode most of the time.

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Quick Specifications See All

  • Type Sony Reader Software
  • Weight 9 oz
About The Author

Executive Editor David Carnoy has been a leading member of CNET's Reviews team since 2000. He covers the gamut of gadgets and is a notable e-reader and e-publishing expert. He's also the author of the novels Knife Music and The Big Exit. Both titles are available as Kindle, iBooks, and Nook e-books.