Have used it professionally for years with great results
From Austin, Texas, Amazon
7 days ago
Summary: Great battery life with two AA's and works day in day out. I've used it mounted on the dashboard as a Location Sound Mixer on many HGTV House Hunters episodes where the couple will be driving in their car through a neighborhood talking about the houses. (Video with GoPros.) Good enough for broadcast!
Summary: Unit got lost in the mail. Amazon gave a full refund. Bought a used unit on EBay for 1/2 price. Very happy because this is the best recorder I've used in 50 years of portable recording. One piece of advice: if you're holding it, don't move it in your hand as the internal mic picks up EVERYTHING. And always use a windscreen. Olympus has a newer model out but don't bother; the LS-11 is by far the best.
Excellent recorder for usual recording conditions, albeit expensive and lacking voice activated recording with pauzes
25 May 2014
Summary: Of all the currently available pocket-size portable voice recorders, the LS-11 is one of the most expensive and for the usual recording conditions one of the best. I have used this device to record air traffic control, meetings, and normal conversations. The sound quality is generally excellent and even acceptable for music, however music recording requires excellent recording conditions.
Summary: I owned many portable recorders like Tascam DR2D,DR100MKII,SONY D50,M10,you name it. LS-11 is definitely among the best! LS-11s are not like D50 or DR100MKII(these are too bulky sometimes). However when it comes to the sound quality, LS-11 sometimes even better than them(Just my opinion). DR2D have a battey issue(only last 6 hours) and M10 could not give you a good playback. So, LS-11 maybe the best choice if you just want to have a portable recorder.
Great as a reference recorder, as well as an everyday recorded you can take with you!
Amazon Customer, Amazon
11 August 2013
Summary: I have been using this recorded for over 2 years now This Linear PCM recorder does a superb job of recording of the full frequency spectrum from 20 Hz to 44 kHz when used in the 96 kHz Linear PCM Recording Mode -according to Olympus specs. In the Mp3 format and Recording Mode of 320 kbps the frequency response is 50 Hz to 20 kHz -according to Olympus specs. To achieve a nice clear recording please be aware and try to avoid the following pitfalls: 1.
Summary: I use this recorder with a speaker phone to record conversation with clients so I may send them a cd of the session. Transferring to discs is a snap. Quality is fantastic, this is my second recorder after my first met with an accident. It is small in size but huge in ability.
Summary: I can't comment on long term durability or use with external mics but my reaction to the LS 11 straight out of the box is, "WOW!" The LS 11 wasn't even on my long list of digital recorders until a friend recommended I should consider it. Boy did he do me a favor! This recorder makes much better recordings than any rig I've ever used in any format (cassette, DAT, DCC, minidisc or reel). It's also the smallest rig I've used.
Summary: The writing in the manual is enough to make me sorry I purchased the LS-11. I put it aside after reading the following: "While the recorder is during stop mode, open the card cover." p17 and "Move the drive icon for this recorder that is appear on the desktop to the garbage bin by Drag & Drop it. p63 At 380 dollars, shouldn't I expect a clearly written manual from a company such as Olympus?