Editorial Review:Product Description:Sony's Memory Stick PRO-HG Duo media has shorter data transmission times and faster recording times between hardware with an 8-bit parallel interface and the flash memory device. With the addition of four connector pins to the Memory Stick's traditional 4-bit parallel interface, the resulting 8-bit parallel interface provides write speeds of up to 30MB/s (240 Mbps) megabytes per second.
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Customer Reviews
Average Rating:
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A perfect match for the Sony PCM-50 audio recorder
I'm using the 4-Gig version of the MS-EX4G as the expansion memory for the Sony PCM-50 stereo audio recorder.
The little Memory Stick has performed flawlessly, recording CD-quality 16 bit/44KHz stereo audio. I haven't pushed it to 24 bit/96KHz but Sony specifies this model MS Pro for the DCM-50 so I assume it could handle the bandwidth.
At 16/44 you'll get about 6.5 to 7 hours' worth of stereo audio on this card. Pretty amazing when you think of how many 10" tape reels that used to consume.
Reads fine through standard card-readers in XP Pro and Vista Home Premium PC's.
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Pricey, but it works!
I purchased the 4GB Memory Stick Pro-HG Duo as added memory for my Sony PCM-D50 Digital Recorder.
Though I am not a big fan of proprietary memory (SD cards are a better value), Sony makes a fine product, and I am glad I bought the 4 GB memory stick. The HG is fast, and I ended up needing the extra memory while recording concerts in Europe.
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If you shoot RAW buy this
I need to shoot bursts of RAW on a Sony DSLR-A700 for dance photography. The A700 has both an MS and a CF slot. The MS HG Duo seems to handle a stream of 18MB RAW files being written much better than the Sandisk Extreme III CF card. Maybe because the HG Duo and the camera were designed to work together from the outset. If you own one of the newer Sony DSLRs with an MS slot, this is THE memory to buy. BTW: The A700 is wonderful for dance photography where flash is banned and the light is abysmal and changing rapidly. Paired with a 70-200 Sigma f2.8 at 3200 ASA, it can track and take beautiful low-noise photos.
Rating: 
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Not worth it if you own a PSP
I own a PSP, and use it to transfer music and videos from my PC to the PSP memory stick. I used to use a 1GB stick, wanted to upgrade to 4GB, read that the HG was sooooo much faster at writing and transfer speed. It's not. I transfered a 175 MB video using PSP media manager to both my 4 GB and my 1GB, to test how long it would take for each stick to do it. Both finished at exactly the same amount of time: 12 minutes. No improvement in transfer speed. I'm not happy with this product at all. If you're going to spend this kind of money for a stick for your PSP, you're better off investing in a 8GB stick. Or just shell out the $60 for a regular 4GB stick. Don't be a sucker. And whatever else you do, DON'T buy a stick off e-bay for $30, those are counterfeits!!! Then you're an even bigger sucker.
Rating: -
Sony Digital Storage Media
I use it in my Sony AS100 digital camera. Very good write spped. No problems.
