Roland R4

4-Channel Audio portable Recorder

euro 1,250

Extended Recording Time with 40GB Hard Disk Drive 4-Channel Portable Recorder for Professional Use

Record up to four channels at once. Edit waveforms on the recorder itself. All this plus a compact size and light weight that assure mobility in the field.
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.

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 and playback. Counting the camera's two channels, this configuration gives you a total of six audio channels.

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. In addition, a digital input and output is provided. Four-channel recording gives you good 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.
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 nondirectional, 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/actualitie at the beginning of a recording.

Five High-Quality Effects
The R-4 lets you tailor the sound during both recording and playback.
Built-In Effects:
3-Band EQ
Graphic EQ
Noise Gate
Comp & DeEsser

24-bit/96-kHz Resolution
Totally uncompressed recording assures good 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.

40GB Hard Disk Drive

Wave Editing Function
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.
Waveform Editing Functions:
Trim (Delete)
Divide (Split)
Combine (Append)
Merge (Bounce)

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 filescan be 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.

Compact Flash Slot
The compact flash slot makes it easy to read or write recorded files. You can use compact flash memory to give data to colleagues or to transfer data to equipment not equipped with an USB interface.

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


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

4 k Ohms or more

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

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 inch phone type

L, R: 950 Ohms, PHONES: 10 Ohms

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

* 0 dBu = 0.775 V rms

Digital Input/Output Connectors
Digital output jacks Coaxial type (conform to IEC60958)
Digital intput jacks Coaxial type (conform to IEC60958)

Other connectors
USB connector B Type
L-connector MIni-Miniature phone type *Recieve only.
Compact Flash Card slot

Effect Unit
Tone Control: Shelving EQ, Graphic EQ, Enhancer, Noise Reducer, Compressor * 96kHz : Invalid
Input gain knobs(CH1, CH2, CH3, CH4)
Input Level Switch(CH1/2, LINE, MIC)
Input Level Switch(CH3/4, LINE, MIC)
Jog Shuttle
Transport Buttons: PREV, NEXT, STOP, PAUSE, PLAY, REC
Function Buttons
Hold SwitchPhantom Switch (CH1/2, CH3/4)
Limiter Switch
128x64 Graphic LCD

Signal Processing
Bit depth
AD/DA conversion: 24 bits
Headroom: 12 dB

Sample Rate
AD/DA conversion: 44.1 / 48 /96 kHz
Digital output: 44.1 / 48 /96 kHz
Digital input: 32 kHz to 96 kHz (convert to internal sample rate)

40 GBytes

16 bits/44.1kHz: 58 hours
16 bits/48kHz: 53 hours
24 bits/96kHz: 17 hours

Power Supply
DC 9 V (AC adaptor), AA battery x 8

USB Cable, AC adaptor(PSB-1U), AC cord, Owner's manual, Carring case


Size and Weight
254 mm
10 inches
222 mm
8-3/4 inches
72 mm
2-7/8 inches
1.7 kg
3 lbs. 12 oz.

Roland Italy: tel.(++39)02937781 ,
e-mail, e-mail
Austria Tel.: 0512 264426 , Fax: 0512 266485 ,
Canada phone: 604-270-6626, fax: 604-270-6552,
France Tel : , Fax : ,
Germany 040 526 009 - 0 ,
Portugal Tel: 226 080 06, Fax: 226 080 075 ,
Spain Tel: 933 081 000 , Fax: 933 074 503

advanced technologic sound magazine
2004 December issue 132

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