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Olympus LS-P4 and violinist recording performance

Olympus LS-P4 Linear PCM/FLAC Digital Recorder

The LS-P4 is discontinued and no longer available for purchase as of 4/22/2021.

We recommend the Olympus DM-720 as a good substitute.

The new Olympus LS-P4 Linear PCM Recorder is the successor to the LS-P2 and offers the same stunning recording quality in a small metal body plus newer recording technology through FLAC recording and playback. It still utilizes Olympus's Tresmic three microphone system. Two top microphones allow you to capture in stereo at a 90° angle with the omni-directional microphone between them. This combination of recording microphones enables a wide frequency response which will please the most demanding of musicians and sound professionals needing to capture clear, dynamic sound.

Whether you are capturing sounds for your digital files or recording your latest music exploits, the new Olympus LS-P4 Bluetooth voice recorder combines the latest technologies, like Bluetooth connectivity and FLAC recording/playback, to get the sounds you want recorded with lossless technology. Quickly attach it to your computer and copy over all your digital recordings so that you can work with them in your favorite sound editor. This Olympus audio recorder is still capable of saving in MP3 and WAV formats.


  • Lossless FLAC format extends the amount of available recording time without losing any audio quality.
  • Because of the better compression rates of FLAC recording you can reach a near perfect sampling rate of up to 96 kHz/24-bit recording of files that 30% smaller than WAV or PCM formats.
  • Playback Normalization Function: sound playback is raised to the highest volume of recorded data without causing distortion.
  • Save recordings in FLAC, PCM, WAV, or MP3 Formats.
  • Zoom Microphone: expand and contract the microphone range allowing you to narrow in on the sound you want to capture.
  • Easy Editing: your audio files can easily be trimmed or divided in the Bluetooth voice recorder without the need for a PC.
  • Bluetooth Connectivity: wirelessly connect to speakers and headphones for playback.
  • SmartPhone Control: with the free OLYMPUS Audio Controller BT app you gain the ability to remotely control the Bluetooth voice recorder (Android devices Only).
  • 96 kHz / 24-bit Capability: linear PCM/FLAC recording up to 24-bit and sampling frequencies up to 96 kHz.
  • Manual Level Settings and Limiter: Fine-tune microphone sensitivity for matching source sound and use the limiter to keep volumes before a set area, avoiding distortion.
  • Intelligent Auto Mode: dynamically adjusts the sensitivity of the microphone in real-time during recordings.
  • Select from 7 recording scenes: Lecture, Conference, Meeting, Dictation, Noisy Situation, Music, DNS (Suitable for Speech Recognition Software like Nuance® Dragon® Professional Group 15).
  • On-Board Equalizer.
  • Noise Cancellation: reduce undesirable ambiance sound during playback.
  • Automatic Voice Balancing: during playback you can automatically balance voices to make them easier to understand and hear.
  • Direct USB PC Connection: a built in USB connector slides out of the bottom of the unit to make it easy to directly connect to a computer for the transfer of files. No cables required.
  • Tripod Socket: a small diameter socket allows for attaching to a tripod for mounting and sound capture.
  • 8GB Internal Memory, External Memory Expandable to 32GB.
  • Battery Life - Recording: Approximately 39 hours.

HTH Engineering, Inc. supports your purchase of the Olympus LS-P4 bluetooth voice recorder with friendly, expert "concierge" technical support via telephone and/or GotoMeeting™ for as long as you own the equipment.


Olympus LS-P4 Tresmic Three Microphone System

The Stereo Directional microphones and Center Omni Directional microphone capture amazingly clear sounds from lows to highs. Click images below to enlarge them.

imageGraph showing how Olympus Tresmic recording works.

Learn more about the HTH Engineering difference.


Includes Free LIFETIME technical support from our expert technicians when you purchase a Olympus LS-P4 from us.


1-Year Warranty with exclusive new replacement unit guarantee within the first 90 days.


Better Business Bureau A+ rated since 2001.


How to order

We have Olympus LS-P4's ready to be shipped right away. Call us at (866) 254-0714 or order Online.

Olympus LS-P4 Linear PCM Digital Recorder
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In Stock for Immediate Delivery

(same day shipping for all orders placed
by 3:30 p.m. EDT)

Call (866) 254-0714
to Get Your Custom Quote

Olympus LS-P4 Professional Linear PCM Recorder

Model #55220

Package Includes:

  • Olympus LS-P4 Linear PCM Digital Recorder
  • Included AAA Rechargeable battery
  • Tripod stand
  • Manual (download .pdf)
  • Limited 1-Year Warranty


  • Exclusive HTH Engineering "Concierge" Turn-Key Tech Support and Free Lifetime Support Via GotoMeeting and/or telephone
Low-cut filter Yes
Internal microphone frequency range 20~20kHz(Center Mic ON) 60~20kHz(Center Mic OFF) 
Recording format PCM/MP3/FLAC
Stereo/Mono (Built-in microphone) Stereo/Tresmic 3 Microphone System
48kHz/16kbps Approx. 10.5 hrs
44.1kHz/218kbps (mono) / 44.1kHz/64kbps (mono) / 44.1kHz/32kbps -
11.025kHz/8kbps (mono) -
Internal memory / External memory 8GB Internal / microSD for external (Max.32GB Sold Separately)
PC connectivity USB 3 Direct
Plug-in power Yes
Noise cancel -
Voice Balancer Yes
Voice filter -
Playback speed control 3.5X - 0.5X
Forward skip x (File skip, 10sec, 30sec, 1min, 5min, 10min)
Reverse skip x (File skip, 1sec to 3sec, 5sec, 10sec, 30sec, 1min, 5min)
A-B repeat Yes
Recording & playback scene select Yes (Only recording)
Calendar Search Yes
File divide Yes
Index mark Yes (Max 99)
Power requirements AAA alkaline battery x1, or AAA Ni-MH rechargeable battery x1
Playback (Earphone) Approx. 31hr.
Internal battery charge Yes
Speaker /Maximum output Built-in φ18mm round dynamic speaker/ 150mW
Microphone jack φ3.5mm, impedance approx. 2kΩ
Earphone jack φ3.5mm impedance 8Ω or more
USB microphone/speaker Yes
Dimensions (HxWxD) 4.29 x 1.6 x 0.57
Weight (including batteries) 2.7
Over Dubbing Yes

Price: $179.99


  • Olympus LS-P4 Linear PCM/FLAC Digital Recorder
  • Olympus LS-P4 Linear PCM/FLAC Digital Recorder
  • Olympus LS-P4 Linear PCM/FLAC Digital Recorder
  • Olympus LS-P4 Linear PCM/FLAC Digital Recorder being used on a digital camera
  • Olympus LS-P4 Linear PCM/FLAC Digital Recorder being used to record a drum session
  • Olympus LS-P4 Linear PCM/FLAC Digital Recorder plugging into computer via USB
  • Olympus LS-P4 Linear PCM/FLAC Digital Recorder USB extended
  • Olympus LS-P4 Linear PCM/FLAC Digital Recorder bottom USB hidden
  • Olympus LS-P4 Linear PCM/FLAC Digital Recorder in the hand
  • Olympus LS-P4 Linear PCM/FLAC Digital Recorder batter compartment and microSD card placement.

Olympus LS-P4 Linear PCM/FLAC Digital Recorder



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HTH Engineering, Inc., Computer Hardware, Tarpon Springs, FL