Sony ICD-UX533

4GB digital voice recorder with expandable memory (Silver)

Item #: 158UX533S

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The Sony ICD-UX533 is a compact digital voice recorder with a lot of versatility. Its built-in stereo microphone records both voices and music with accuracy and clarity. The recorder features a built-in retractable USB plug for easy connection to a PC. Just plug it in when you need to charge the built-in battery or transfer your files — no need to keep track of a separate cable.

Sony ICD-UX533 voice recorder

The recorder's retractable USB plug means you don't have to keep up with a separate charging cable.

Expandable memory

Don't worry about running out of memory. The 'UX533 has 4GB of built-in memory that can store over 1,000 hours of recordings. If you need more, just insert a microSD card into the player and keep recording.

Easy on-the-go recording

The UX533 features an automatic recording level mode to ensure the sound isn't over- or under-recorded. Sync-Record activates the recorder when an audio source is started. So you can record yourself playing guitar, for example, without having to reach over to press the record button.

Playback options

Use the built-in speaker for playback, or plug in your headphones for more discreet listening. The recorder can deliver up to 30 hours of operation with its “AAA” rechargeable battery.

Product Highlights:

  • battery-powered digital voice recorder with expandable memory
  • built-in stereo microphone
  • 4GB embedded memory
  • supports playback of MP3, WMA and AAC audio files
  • built-in editing functions:
    • Sync-Record automatically starts recording when audio source begins playing
    • automatically adjusts recording levels
  • expandable microSD card slot (memory card not included)
  • LCD display
  • built-in speaker
  • Scene Select automatically sets levels based on activity (notes, music, lecture, etc.)
  • high-speed USB interface with retractable connector
  • headphone minijack output
  • stereo minijack input for an optional external microphone
  • up to 30 hours of operation with rechargeable "AAA" battery (included)
  • 1-1/2"W x 4-1/16"H x 9/16"D
  • weight: 2.62 oz.
  • warranty: 1 year
  • Our 60-day money-back guarantee
Computer Requirements:
  • Windows® 8, Windows® 7, Windows Vista® SP 2 or higher, Windows® XP SP3 or higher
  • Mac OS X v.10.3.9-v.10.8 (Sony software has limited Mac compatibility)

Hands-on research

What's in the box?

Download owner's manual

  • IC recorder (silver)
  • 6.75" USB extension cable (Male Type A USB on one end and Female Type A USB on other end)
  • Stereo earphones with 39" cord (3.5mm plug)
  • Quick Start Guide
  • Limited Warranty sheet
  • Online product registration sheet
  • Audio Studio promo sheet
  • Listening for a Lifetime headphone safety sheet

Product Research

General Features
Recording Features
Edit and Playback Functions

General Features

Overview: The Sony ICD-UX533 is an easy-to-use, hand-held portable digital voice recorder. It has a built-in 4 GB flash memory for hours of recording time. It has a built-in, 2-element stereo microphone, mono speaker, and jacks for an external microphone and headphones. The UX533 operates on a "AAA" Nickel-Metal Hydride (NiMH) rechargeable battery. Included with the recorder is a pair of stereo earbud headphones.

LCD Display: The UX533 features a 15/16" square, backlit, monochrome LCD display which indicates recording and playback information. The recorder will display the elapsed or remaining recording time in hours, minutes, and seconds. When not recording, the current time can be displayed.

Date and Time: The recorder features a built-in clock. If you have set the time and date, information as to when a sound file was recorded is stored automatically with that file. In addition, you can set an alarm and start playback of a selected file at a specified time.

Built-in Microphone: The unit features a built-in, 2-element, stereo microphone on the top of the recorder. You can set the microphone sensitivity for music, voice, or for zoom functionality. In addition to the built-in microphone, the recorder also has a 3.5mm external microphone input.

Built-In 4 GB Flash Memory: The UX533 Digital Voice Recorder features a built-in 4 GB flash memory which can hold hours of audio or voice memos. The unit has 5 pre-programmed folders (400 maximum), and up to 199 files per folder (or a maximum of 4074 files). Because a portion of the memory is used for system management and/or application files, available capacity is approximately 3.6 GB.

Memory Card Slot: In addition to the 4 GB built-in memory, the UX533 has a memory card expansion slot for more recording capacity. The slot will accept microSD and M2 (Memory Stick micro) memory cards.

USB Port: The UX533 has a retractable Type A USB plug that makes it easy to connect directly to your computer for file transfer or charging. A short USB extension cable is supplied for use with hard-to-reach USB ports. The unit is Hi-speed USB compatible, and can work with the following Operating Systems:

  • Windows 8
  • Windows 7 SP1 or higher
  • Windows Vista SP2 or higher
  • Windows XP SP3 or higher
  • Mac OS X (v10.3.9-v10.8)

Sound Organizer: The unit features built-in Sound Organizer editing software. When you connect the recorder, you can install the software on your computer. Sound Organizer is compatible with Windows XP (SP3), Vista (SP2), Windows 7, and Windows 8.

Power Requirements: The recorder is powered by a single "AAA"-sized Nickel-Metal Hydride (NiMH) rechargeable battery. See the chart below for battery life information.

Recording Features

Recording Format: The ICD-UX533 records audio files in MP3 format in four recording modes at bit rates of 8 kbps to 192 kbps, or in 16-bit, 44.1kHz LPCM. You can record in stereo or mono, depending upon the recording mode. Lower bit rates provide longer recording times while higher bit rates offer better quality recordings. The selectable recording modes are as follows:

Recording Mode Frequency Response Maximum Recording Time
Built-in 4 GB Memory
Max. Battery Life
LPCM 44/16 50Hz -20kHz 6 hours 22 hours
MP3 192k 50Hz - 18kHz 44 hrs 40 min 24 hours
MP3 128k 50Hz - 16kHz 67 hrs 5 min 24 hours
MP3 48k (Mono) 50Hz - 14kHz 178 hours 25 hours
MP3 8k (Mono) 60 Hz - 3400 Hz 1073 hours 30 hours

VOR Function: The VOR (Voice-Operated Recording) function makes the digital voice recorder start recording when the recorder detects sound, and pause when no sound is heard, eliminate recording during soundless periods.

Intelligent Noise Cut: Sony's Intelligent Noise Cut feature significantly reduces ambient noise during recording for clearer playback.

Scene Select: You can select a pre-determined recording mode with the push of the Scene Select button. You can choose from Meeting, Voice Notes, Interview, Lecture, Music, and My Scene 1 or 2, to optimize the recording settings for each type of scene.

Edit and Playback Functions

Playback Formats: In addition to LPCM and MP3 files recorded by the UX533, the unit will also playback MP3, WMA, AAC, and WAV files.

Overwrite and Add Functions: The UX533 allows you to correct dictation in playback and add a recording after the original recording. Added recording will be placed after the current file, and will be counted as a part of the file.

Divide: In the stop mode, you can divide a file into two parts, with the new file number being added to the newer part of the divided file.

Erase: You can erase your recorded messages one by one, or all messages in a folder at one time.

Track Mark: You can place up to 98 track marks for each file to assist you in finding an exact spot in your recording.

Protect Files: To prevent a file from being accidentally erased or edited, you can protect an important file. When a file is protected, it is regarded as a read-only file. Protection can be released, if desired.

Built-In Speaker and Headphones: The UX533 features a built-in mono speaker for listening back to your recordings. The recorder also features a 3.5mm headphone output. A pair of stereo headphones is supplied.

Easy Search: You can go forward for approximately 10 seconds or back for approximately 3 seconds to locate a desired point in a long recording.

Calendar Search: You can easily search for recordings by date. A calendar is displayed, indicating the dates when recordings were made.

A-B Repeat: You can place marks at the beginning and the ending of a recorded passage for repeated playback. This constant repetition feature can be used for language learning.

Hold Function: The UX533 has a Hold function that will lock the buttons to prevent accidental operations. The Hold function is activated by sliding the power switch to the left.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

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Questions & Answers Ask the community. Share your knowledge.

1 question already asked

The question was how to convert the file format. [ ichard  Jul 21, 2014 ]
Yes, very easily. Simply extend the USB connection that's hidden inside this unit and connect to your computer. I have been quite pleased with this recorder. I ordered a clip-on (lav) mic to record my speaking events. The recorder fits in my pocket and is much smaller than I expected, about the size of 2 9V batteries end-to-end. I recommend this.. [ JOEL  Dec 14, 2013 ]

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