
EVISTR V508 User Manual
Thank you for purchasing a recorder from
EVISTR. Customer satisfaction is our priority. If
you have questions or problems, please feel
free to contact to us.
Notice: The device built-in 16GB, no TF card
include. Device can directly use without TF card
- Our customer support email:
support@evistr.com
- Keep this booklet for future reference.
The Booklet Compiled by 7 main parts:
Package
Information,
Warranty, Product Sketch, Quick
Operation Guide, Basic Operation Guide, Menu
Option, Frequently Asked Question
At Quick Operation Guide and Basic Operation
Guide, we can learn how to use the devices
function in short time
At the Menu Options Parts, we can find all func-
tions for the devices
Package Information
1 x V508 Device
1 x USB Cable (for charging and data transfer)
1 x Earphone
1
PART 1
We highly recommend you register at our site
to receive an extended warranty (18months), to
verify the product authentication, and to have
better customer service. Registration is free.
Register VIP within 30days via
http://www.evistr.com/vip or email sup-
port@evistr.com
Product Warranty Product Sketch
1 year warranty unless registered with Evistr VIP
Line In
TF Card Slot
TF Card
Swtich Button
Power Button
Screen
Earphone Jack
USB
Rec/Save
Noise Reduction
Reset
Delete
/A-B
Menu Return
Vol- / Down
Vol+ / Up
Rewind /
Previous
Fast
Forward
/ Next
Bulit-in Mic
Speaker
Play/ON/OFF
2 3

Turn ON device: Press PLAY button for two
seconds to turn on the device. (when power
button at ON position)
Recording: push up REC button to begin
recording.
Save Recording: press down REC button to
save recording.
Delete Recording:
when turn on device, press
We can delete the file we just saw. Select
delete all to delete all files.
Play a Recording: by pressing PLAY button
turn on the device, press / button to
choose the recording you wish to hear -> press
PLAY.
Play Next / Previous Recording:
press the / button.
Fast Forward / Rewind:
press and hold the / button.
Recording Space: when recording, press M, it
will show how many hours the device can record
A-B Repeat: when playing file, press DEL button,
we can use A-B repeat
/ to select file, and then press DEL button.
Quick Start Guide
NO.
1 Recording Source
Recording quality bit rate
Total Recording File Count
Recording time
L / R Channel meter
Battery Bar (when battery bar is
empty, battery needs recharging)
2
3
4
5
6
Function
4 5
1 2 3
4 5
6
Backup data as frequently as possible.
Listen to a test file on the device to check
sound levels.
Important Notice for Using This Device
DOs
DON’Ts
Remember to push down REC button and
save your recording each time.
If typing or writing near the device while
record function is on, it will capture the noise.
Do not delete a file or format the device
unless the files have been backed up.
Do not press any buttons when device is
connected to a computer.
Do not use non-original micro USB cable to
transfer data from device to computer. Not
all micro USB cables support data transfer.
Keep this booklet for future reference.
Contact customer service with Order ID or
System Firmware Version Information, or
Bar Code on the package for a more effec-
tive reply.
Do not scratch the recorder body.
6
These instructions will say “hit” or “press and
hold.”
Connect to Computer or USB Socket to Charge
Hit: a short press of the button.
Press and hold: press the button a few sec-
onds until the screen shows the information.
Operational Explanations:
Basic Operation Guide
1) Charging the device
Do not use the Voice Activated Function
unless needed. It may not record some low
decibel voice you want recorded.
USB
Full Charged Battery Low
7
z
z
z
z
z
z
z
z

Press PLAY turn ON device
Notice: When recording, press M button, it can
show how many hours the device can record
After recording, press PLAY,
it will play file just saved
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512kbps
002
DENOISE
-40 -30
000:01:41
L
R
2) Turn on the recorder
5) Fast Forward / Rewind / Adjust Volume
3) Recording
4) Play Recording
recording
saved!
Press and hold
Power Button Need
keep at ON position
Fast Forward / Rewind
Previous / Next
Tap it
Tap it
Adjust Speaker Volume
8 9
Notice:this functions work when it is playing
Go main menu, select MUSIC, and the play
Press DEL to delete file
Note: the songs do not put inside the RECORD
folder, you could create a new folder for it.
7) Delete Recording
8) Data Transfer
6) Play Music
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512kbps
002
DENOISE
-40 -30
000:01:41
L
R
play
select
select
select
YES
YES
Music.mp3
Delect File
Delect 2019-09
YES
NO
USB
RECORD
10 11

Push REC, we need choose correctly source
EXTERNAL MIC: for extenal microphone
LINE IN: for line in audio cable
1. Insert TF card at correctly Direction
2. Switch TF card memory
Notice: device built-in 16GB, can directly use
9) Use with TF Card
10) LINE IN/ EXTERNAL MIC
Insert TF card
MIC
12 13
Record from
Line In
External MIC
LINE IN
Record from
External MIC
Line In
Push up TF card memory
Push down device memory

Press, we can return to MAIN menu. The PLAY
button works as OK/Confirm in menu options
Press Play (turn on device)-> tap -> press
Press Play (turn on device) -> hit -> press
all recordings file from here
we can see all recording function and settings
from here
Select at this Record Format, hit PLAY, we can
choose WAV Rec or MP3 Rec. Hit PLAY to
save choice
After choice the Record Format, we can
change the recording bit rate from this option
/ to select Voice -> Hit PLAY, we can see
/ to select Record Settings -> Hit PLAY,
Menu Options
1. Voice
2. Record Settings
2.1 Record Format
2.2 Set Rec bitrate
1
EVISTR V508 User Manual
PART 2
AVR Switch:
turn on / off Activated Voice Record Mode
Note: do not turn on this function for important
lectures or meetings. It may skip or lose some
very important sentences at low decibels. Use
regular on/record/stop for meetings.
Turn On this function, plug in earphone, we can
hear and monitor what it is recording
ON: default. LED indicator light is ON.
OFF: turn off the LED indicator light.
Select at this settings, hit PLAY, We can choose
the recording file time length at Half Hour, One
Hour, Two Hour, CLOSE.
AVR Level:
select the voice activated recorder sensitivity level
From Level 1 to Level 6: Level 1 only picks up
voice or sound above 70db, a very loud sound.
Level 5 is very sensitive, so any quiet sound
will be recorded. (i.e. normal environmental
noise will activate recording).
At AVR mode, we still need to press STOP to
save recordings when we complete a recording
task.
Voice Activated Sensitive Level
2.3 Track AVR Mode
2.6 Record Subsection
2.4 Record Monitor
2.5 Led On/Off
Format Bit Rate 16G Recording time length
WAV 512kpbs 72hours
WAV 1024kpbs 36hours
WAV 1536kpbs 24hours
MP3 128kbps 290hours
MP3 64kpbs 580hours
MP3 32kpbs 1160hours
2 3

Record on/off: turn on the auto record function
Start Time: set when the device start to record
External MIC: record from external microphone
LINE IN: record from line in
To use this function properly, we must do this:
A. Set correctly system time for the device
See all recordings files from here
Select at Set Time, Hit PLAY
Press +/- to adjust, press / to move
next. When set correctly, hit PLAY to confirm
and finish setting.
B. Keep the power button at ON position
When insert line in cable or external micro-
phone, we push up REC to record, we need
select correctly recording source
English default. We can select for other
language of the device. If, unfortunately, the
device is set to the wrong language, please
contact customer service. support@evistr.com.
Auto Record Cycle: set auto record function
cycle. It can function at Once, Daily or Work Day
End Time: set when the device save file and
stop record
When this function was set, the recording
device will automatically save a file at the
selected time length and start a new recording,
unless we press STOP to save and finish the
recording task.
Press Play (turn on device)-> tap -> press
see all music file on the devices from here
/ to select Music -> Hit PLAY, we can
Press Play (turn on device)-> tap -> press
we can changes system settings for the devices
/ to select System Settings -> Hit PLAY,
3. Music
4. System Settings
2.7 Auto Record
2.8 Recording Library
2.9 Record From
4.1 Language
4.2 Date and Time
4.2.1 Date Settings
4 5
Select at Set Time, Hit PLAY
Select at Set Date Format, we can choose the
date display format.
It can set 10seconds, 20seconds, 30seconds,
always on.
When always on, the device screen will not go
dark, it will consume a lot of battery power.
It can set the brightness of the screen from 0-15
OFF: close this function
Set sleep timer:
we can set at 10, 30, or 60 Minutes.
Notice: When this function was ON, device will
Select at Set time Format, we can choose the
time display format.
Press +/- to adjust, press / to move
next. When set correctly, hit PLAY to confirm
and finish setting.
4.3 Display Settings
4.4 Sleeper Timer
4.2.2 Time Settings
4.3.1 Backlight Timer
4.3.2 Brightness
6
1. If forgot password, please enter 18 18 18,
and then hold button more than 3 seconds
to reset the device
2. If password function is ON, when connect to
computer, we need to input correct password,
otherwise, it will fail connect to computer
Device shows the free space and total space.
Device shows the firmware version and the
release date.
count down the time, and force to shut down the
device when time elapsed
Password switch: OFF default. When turn it on,
we need to set password for the device
Password set: input a 6 digits password. Press
+/- to set the numbers. Press / to move
to next.
4.5 Password Set
Note
4.6 Information
4.6.1 Disk space:
4.6.2 Player Information:
7

When playing/paused playing recordings or
music, press M button can go to play settings
At this option, it can set at Repeat 1, Shuffle,
Repeat off, Repeat All
Notice: shuffle, it will play files in random
Repeat Mode: enter A-B repeat
Replay Times: set A-B repeat times
Repeat Interval: set A-B repeat interval
It can set off, rock, jazz, classical, techno
Enter delete option, it can delete one, delete all.
Delete one: it will delete the file just played or
paused
Set the playback speed rate from -8 to +8,
higher number, faster speed. -8 rate, it means
playback speed it is 8 times lower than normal
Restores to factory default. Very helpful if
confusion arises when creating settings.
Select Yes, press PLAY to confirm. Device will
start to restore factory settings. When completed,
it will show Restored!
Select Yes, press PLAY confirm. Device will start
to reformat and erase all data. Wait until the
device reboots and completes the process.
Note: Do not turn off power when formatting
device. If, unfortunately, the devise is mistakenly
cut off, it will show as disk error.
Push down the power button from ON to OFF
position. Connect the device to a Windows com-
puter, and format the disk from the computer to
return to normal state.
Note: If you are using a MAC computer, please
contact our customer support. Reformatting on a
MAC computer needs different options.
This will format the disk and erase all data
on the device, so remember to back up
important files before doing.
5. Play Setting
To correct disk error.
4.7 Factory Setting:
5.1 Play Mode
5.2 Repeat Settings
5.3 Equalizer
5.4 Variable Speed Playback
5.5 Delete
4.8 Format Device
98
Add bookmarks for the file
Product Dimension 4.3 X 1.3 X 0.55inch (110 x 32 x 14mm)
Product Weight 73g (2.57z)
Screen Size 1.4inch, 128 x 64 LCD
Charging Input < 1A 5V
Record Bit Rate
1536kpbs, 1024kpbs, 512kpbs, 128kpbs,
64kpbs, 32kpbs
Support System
Windows98 and later version, XP, Windows
7 /8 /10
Earphone Output
Max 10mW+ (30Ohm), Freq 20Hz - 20KHz,
S/N ratio > 90db, Distortion factor 0.05%
Memory
8G / 16G / 32G (Subject to the device)
Battery
3.7V 550mAH Lion Polymer
Music Playback Battery
Time
12 hours (single full charged with earbud,
screensaver)
Max Recording Battery
Time
Full charged, recording at 32kpbs could
work 15 hours
Support Music Format
MP3 / WAV / FLAC / APE / OGG / WMA
USB Socket
USB 2.0 High Speed (Charging and Data
Transfer)
If there is no voice recording or all recordings
have been deleted, when device is turned on it
will display “no voice recordings” or “no songs”
on the screen. Not to worry, go ahead and
press REC or M (menu).
Due to static shock, like over charging, recorder
cuts off its power when the formatting process
doesn't complete, and device loses system
firmware.
How to Rescue: Keep power button at OFF
position, connect device to Windows computer,
and format the recorder disk again. Device will
be normal.
Go to Menu -> Record setting -> / button
-> Record led -> select OFF. When recording,
the record light will not light up or flash.
Technical Parameter
Frequently Asked Question
1) No Voice Recordings
2) How to Turn Off the Record Light
3) Disk Error
4) Failed to Connect to Computer
5.6 Bookmarks
10 11

Before connecting the recorder to a computer,
turn off the recorder.
When connecting to a computer, do not press
any buttons on the recorder or do any operations
on the recorder. Otherwise, it will exit connection
mode, and fail to connect to the computer. At this
status, it will only charge the voice recorder.
For more failed connect to computer issues,
please contact us. We will reply promptly.
You may delete the file or copy the file onto an
ordinary USB Flash Drive.
Yes. When the recorder is successfully connected
to a computer, find it as the removable drive name
“V508.” All recordings are saved in a folder named
“RECORD” in the drive.
5) Can Recordings Be Deleted from the
Computer?
12
