Edirol R4 4 Channel Portable Recorder

EDIROL R4 Details ^top

The R-4 brings you a new generation of portable recording. Enjoy superb sound quality. Use the 40GB hard disk drive for extended recording. Record up to four channels at once. Edit waveforms on the recorder itself. All this plus a compact size and light weight that assure outstanding mobility in the field. The Edirol R-4. Gear up for the new generation of portable recording.

Extended Recording with 40GB Hard Disk Drive
Equipped with a 40GB hard disk drive, the R-4 can record up to 17 hours at maximum sound quality or up to 58 hours at CD quality.

Superior 24-bit/96-kHz Linear Recording
Totally uncompressed recording assures outstanding sound quality. Choose 16-bit or 24-bit quantization and a sampling rate of 44.1 kHz, 48 kHz, or 96 kHz. Save data as WAV files.

Simultaneous 4-Channel Recording
The 4 XLR/Phone combo jacks come with switchable phantom power and give you a choice of MONO, STEREO, STEREO X2, or 4CH recording. Digital input/output is also provided.
Four-channel recording gives you exceptional flexibility. For example, you can use mics to capture the ambience of a performance hall while using line input to record the performance itself. Or you can record at several different level settings simultaneously.

On-Board Limiter
Built into the analog stage, the Limiter helps deliver a stable and reliable recording free of clipped noise from sudden input surges.

Built-In Nondirectional Stereo Microphones
The R-4's omnidirectional, back electret condenser microphones offer superb transient characteristics and vibration resistance.

Pre-Recording Function
When the REC button is pressed, the current material is appended to a buffer that contains recorded material from a few seconds earlier. This helps prevent missed recording opportunities or sound bites at the beginning of a recording.

Five High-Quality Effects
The R-4 lets you tailor the sound during both recording and playback.

L Terminal for Linking a Digital Video Camera
The R-4's L terminal lets you connect a similarly equipped digital video camera to synchronize the camera start/stop while R-4 is recording. Counting the camera's two channels, this configuration gives you a total of six audio channels — a wealth of audio data to get creative with.

Waveform Editing Using Only the R-4
The R-4 is all you need to edit waveforms. Just watch the waveform on the LCD as you edit. Scrubbing playback with the shuttle dial lets you set the edit points precisely by sound.

Index Any Point Instantly
Press the mark button anytime during recording or playback to mark that point for easy, instant indexing later. With the A-B repeat function you can set two points and repeatedly play back the material between them.

Easy Playback with the Jog Dial
Use the jog dial to fast-forward or rewind at any of seven speed levels.

Built-In Stereo Speakers
The R-4's built-in speakers make it easy to monitor recorded sound without headphones.

USB 2.0 Terminal Provides a High-Speed Computer Data Link
The USB 2.0 high-speed mode transfers data about 20 times faster than DAT. You can also use the R-4 as a 40GB storage device. Edit R-4 files directly from DAWs and other applications.

Advanced Linking with the EDIROL DV-7DL
A USB cable is all you need to connect directly to an EDIROL DV-7DL Video Editor and exchange files.

CompactFlash™ Slot
The CompactFlash™ slot makes it easy to read or write recorded files. You can use CompactFlash™ memory to give data to colleagues or to transfer data to equipment not equipped with a USB interface.

2-Way Power Supply
The R-4 runs on eight AA batteries or with the AC adaptor.

Digital Audio Input/Output
Exchange data with other digital equipment while maintaining fidelity with the coaxial digital audio in/out.

Soft Carrying Case
The R-4 comes with a soft carrying case with a shoulder strap for safe, comfortable use in the field

EDIROL R4 Documentation ^top

R4 Owners manual (pdf)

R4 Brochure (pdf)

EDIROL R4 Specs ^top

Main Specifications

Connectors
Channel 1/2 3/4: XLR/PHONE type
(phantom powered: XLR only)

Impedance
4 k Ohms or more

Frequency Response
44.1kHZ: 20Hz to 20kHz (0 dB/-2dB)
48kHz: 20Hz to 22kHz (0 dB/-2dB)
96kHz: 20Hz to 40kHz (0dB/-3dB)

Nominal Input Level
Channel 1,2,3,4:
-60 to +4 dBu (Variable)

Output
Connectors
RCA Phono type (L,R)

Headphones Jack Stereo
1/4” Phone Type

Impedance
L,R: 950 Ohms, PHONES: 10 Ohms

Output Level
L,R: -7.8 dBu (-10 dBV)
PHONES: 30mW +30mW (32 Ohms load)

Digital Input/Output

Connectors
Digital Output Jack:

Coaxial Type
(conforms to IEC60958)
Digital Input Jack:
Coaxial Type (conforms to IEC60958)

Other Connectors
USB Connector
B Type

L-Connector
Mini-Miniature Phone Type *Receive Only
Card Slot
CompactFlash
Effect Unit

Tone Control
Shelving EQ
Graphic EQ
Enhancer
Noise Reducer
Compressor
*96kHz: Invalid

Control
Controls
Input Gain Knobs (CH1, CH2, CH3, CH4)
Input Level Switch (CH1/2, LINE, MIC)
Input Level Switch (CH3/4, LINE MIC)
Monitor Knob
Jog Shuttle
Transport Buttons
(PREV, NEXT, STOP,PAUSE, PLAY, REC)
Function Buttons
Hold Switch
Phantom Switch (CH1/2, CH3/4)
Limiter Switch

Display
128 x 64 Graphic LCD

Signal Processing
AD/DA Conversion: 24-bit
Headroom: 12 dB

Sample Rate
AD/DA Conversion 44.1/48/96kHz

Digital Output
44.1/48/96kHz

Digital Input
32kHz to 96kHz
(Convert to internal sample rate)

Hard Disk Capacity
40GB

Recording Time
16-bit/44.1kHz: 58 hours, 16-bit/48kHz: 53 hours, 24-bit/96kHz: 17 hours

Power Supply
DC 9V(AC Adapter)
AA Battery x 8

Dimensions
254(W) x 221.8(D) x 72.2(H)mm

Weight 1.7kg

Accessories
USB Cable
AC Adapter (PSB-1U)
AC Cord
Owner’s Manual
Carry Case