Product Comparison: Sony ICD-PX470 vs Sony ICD-PX440

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General Specifications
About the Product
Record sounds and voices in superior clarity. The ICD-PX470 features Focus and Wide-Stereo recording so you can zero in on the audio source you want to capture. And with 4 GB internal memory, expandable to 32 GB via the micro SD slot, you can record for days.
The ICD-PX440 4GB PX Series MP3 Digital Voice IC Recorder from Sony is a digital voice recorder designed for use in business applications. It features 4GB of internal memory, and supports up to 32GB of additional storage via its microSD card slot. The recorder features Sony's Intelligent Noise Cut function to reduce background noise while recording, and a track mark-based cue system allows for navigating individual recordings.
Key Specs
Maximum Recording Time
59.5 hours
57 hours
Internal Memory
4 GB
4 GB
Voice-Activated Recording
Frequency Response
50Hz to 20kHz
75Hz to 20kHz
Recording Quality
44.1 kHz, 16 bit
Number Of Recording Modes
What customers say about "Key Specs"
Sony ICD-PX470 Stereo Digital Voice Recorder with Built-In USB Voice Recorder
  • This recorder has worked very well for recording the rehearsals of a choir I sing in and helping me learn the music. I am very grateful that it allows me to add track marks, which makes it easy to go over (and over) parts that I need to work on and skip the rest.
  • This is a wonderful digital recorder, probably the best I ever used. Sound is crystal clear.. lots of advanced options and features.Very well made device! In few minutes all settings were set and I started recording.
  • Great product. I can record anything even a couple of feet away and it still has a nice recording. I also by an external mic and worked perfect with this voice recorder.
  • Sony LCD-PX470 ..I have purchased a few recorders that have cost over twice the price I paid for this one. From sony, zoom, and Tascam. This is very easy to use.
  • Nice recording for reasonable price. I am using them to gather research on digital recordings. They're getting heavy use and I haven't had to replace a battery yet (I have 5) since July.
Sony ICD-PX440 Stereo IC Digital Voice Recorder Built-in 4GB and Direct USB
  • The PX440 is a very good voice recorder. The recording quality is excellent for most personal applications and even some semi-professional ones. I don't have much to add to what has already been said, though there is one thing I feel is worth mentioning.
  • So this recorder helps us get him on track for each day of school as well as getting his homework completed. We find the voices to be very clear, the interface easy to manage and having the USB connector and the ability to drop and drag sound files very convenient.
  • I bought a stereo recorder instead of mono recorder so the sounds can be heard better during play back. I use it in college. If the instructor is not too loud, then you have to be close up, like in the front middle row.
  • Recording quality is top notch. I use it to record short music samples that have to be around medium quality. The sound quality exceeds my needs and is very good. Battery life is also very good in this recorder.
  • Not suitable for long range recording. It gives it's best only if the recorder is about a feet away from the source
Size & Weight
4.5 in.
4.46 in.
1.51 in.
1.46 in.
0.76 in.
0.76 in.
2.7 oz.
2.65 oz.
What customers say about "Size & Weight"
Sony ICD-PX470 Stereo Digital Voice Recorder with Built-In USB Voice Recorder
  • Has great settings for sensitivity and a great size. I liked it so well I purchased a second one for my hobbies. I would recommend this recorder to anyone.
  • Hardly used yet but seems exactly what I need so far. Much lighter than an iPhone and excellent recording quality from the built in mics.
  • It is lightweight and compact. I particualrly like the simplicity of operation.
Sony ICD-PX440 Stereo IC Digital Voice Recorder Built-in 4GB and Direct USB
  • Much better than my old recorder, like that T-mark function, size is good.
  • Nice quality, small size. I also got a leather case for it to provide better protection and so it does not slip out of my hand.
  • I love the compact size, and the recording is clear. I think it also helps that I sit closer to the front of the classroom, which is of course is closer to the professor.
  • The best part was size and weight, perfect pocket size and weighs next to nothing.
  • The glossy look gives it a somewhat nice look, but it is a big down when it comes to the grip factor
  • Plastic.... cheap product... The size is too big.... make it small..... sound is just normal. looks like plastic toy.... earphone is worse....
Computer Compatibility
Cue Marker Function
1-Touch Recording
Supported File Formats
Integrated Speaker
microSD card slot, Phone 3.5mm jack, Hi-Speed USB, Stereo Mic-in jack
Hi-Speed USB, Stereo Mic-in jack, Phone 3.5mm jack
Extra-long battery life for extended recording, Adjustable microphone range for clearer voices, Auto Voice Recording reduces background noise, Record and listen in Linear PCM or MP3 formats, S-microphone system captures distant or quiet sounds, Transcription playback helps you review recordings, Low cut filter eliminates unwanted noise, USB direct connection for quick file transfer, Calendar Search finds the right file quickly
Record MP3 audio and play back through the 300 mW speaker, Long battery life enables up to 96 hrs recording (MP3 8 kbps), Intelligent Noise Cut reduces ambient noise for clearer playback
What customers say about "Features"
Sony ICD-PX470 Stereo Digital Voice Recorder with Built-In USB Voice Recorder
  • The build-in USB saves a lot of time and effort.
  • Almost functions are satisfactory. But it is not work led display. It is a only weakness.
  • Also, the memory and battery life are both really good.
  • There is no light for the screen, and that's HUGE negative point with no logical explanation.
  • Beware, this has NO screen lighting. So only for use when you have sufficient outside light.
  • This should have at real .PDF user manual to download on how to use it, not just a quick start guide but a real manual on settings, features, specs etc.
Sony ICD-PX440 Stereo IC Digital Voice Recorder Built-in 4GB and Direct USB
  • The ICD-PX440 can search by date which the ICD-UX533 can't do. When I travel, I keep an extra PX440 in a iGadgitz leather case which protects it from damage in my suitcase.
  • The interface is simple to use. It displays the real-time audio level graph on the screen
  • The only power source is a pair of AAA batteries and it is holding up pretty good for more than 2 weeks for me
  • The recorder also provides a menu with tons of options, most of which I don't understand and probably wouldn't need to use anyway, so with a little bit of time you can arrange your recorders into folders or whatever you want to do.
  • The battery life is phenomenal. I went a full semester without needing to replace the 2 AAA batteries.
Warranty / Certifications
Manufacturer Warranty
1 year(s)
1 year(s)
Other Information
79.99 $
79.99 $

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