Edirol / Roland R-4 - 4-Channel Portable Hard Disk Recorder
The Edirol R-4 is a portable, battery or DC powered 4-channel hard disk recorder with a 40 GB internal hard drive, a Compact Flash card slot for data backup and transfer direct from the hard drive, and a USB 2.0 port that permits high speed computer transfers for post production purposes.
The R-4 is a high resolution, self-contained location recorder, with 24-bit/96 kHz capability, 4 XLR and 1/4" combination analog connectors for input from microphone or line level sources, and switchable phantom power for the XLR microphone connectors, in support of professional condenser microphones. A SPDIF digital I/O, on coaxial connectors, is also provided.
Each input channel of the R-4 is equipped with a dedicated level control knob, and a global, switchable peak limiter is available for the analog inputs. Edirol has also included a set of 5 EQ's and Dynamics processors for greater "in-house" control of the recorded product. The onboard waveform editor features jog wheel scrubbing and a lean, but practical set of editing tools, displayed on a large, backlit LCD. WAV is the file format of choice; MAC OS X and Windows XP are both supported, in their more current versions, along with Windows 2000 and ME.
The technology gets cheaper and the features increase in the world of location digital recording, a nice ratio for the consumer. The R-4 is a genuine value for the working professional recordist, serving ENG or musical recording applications.
- Portable 4-channel hard disk recorder with 40 GB internal drive, Compact Flash card slot for backup and file transfer, and 8 "AA" battery or DC power operation
- Up to 24-bit/96 kHz high resolution recording; 16- and 24-bit, 44.1, 48 and 96 kHZ bit depth and sampling rate options with 12 dB headroom
- USB 2.0 port for high speed data transfer to computer; Mac OS X and Windows XP/2000/ME support
- Mono, Stereo, Dual Stereo and 4 simultaneous track record modes
- Backlit transport, record, power on and A-B repeat buttons; large, backlit 128 x 64 Graphic LCD display with dedicated Display selector button
- Built-in nondirectional, back-electret stereo condenser microphones
- 4 combination XLR/1/4" Mic/Line inputs with dedicated selector switch; switchable(Ch 1/2, Ch 3/4) 48 Volt phantom power for XLR connectors and condenser or dynamic microphone compatibility
- 4 independent level control knobs for input channels, master monitoring volume knob; built-in stereo speakers and headphone output
- Coaxial SPDIF digital input and output, 32 to 96 kHz sample rate conversion on digital input
- Global hold switch locks all controls for tamper-proof operation
- Built-in switchable limiter for analog stage and 5 digital EQ and Dynamics processors including 3-band parametric EQ, Graphic EQ, Noise Gate, Enhancer, and Compressor with De-essing
- WAV file format support, onboard waveform editor with instant indexing, jog wheel scrubbing on playback, Trim, Divide, Combine and Merge editing features
- Jog wheel fast forward and rewind with 7 assignable speeds
- Pre-record buffer prevents missed recording cues
- L terminal allows connection of unit to L protocol-equipped digital video camera, synchronizes camera start/stop while recording; enables two additional synchronized audio recording channels from camera
| Type | Portable 4-Channel Hard Disk Recorder |
| Recording/Reading Methods |
Uncompressed Mono, Stereo, Stereo X2, 4-Channel WAV File Format |
| Recording Bit Rate | 16-bit, 24-bit |
| Sampling Frequency | 44.1, 48, 96 kHz |
| Number of Channels | 4 |
| Frequency Response |
44.1 kHz: 20 Hz - 20 kHz(0 dB/-2 dB) 48 kHz: 20 Hz - 22 kHz(0 dB/-2 dB) 96 kHz: 20 Hz - 40 kHz(0 dB/-3 dB) |
| Signal-to-Noise Ratio | Not Specified by Manufacturer |
| Dynamic Range | Not Specified by Manufacturer |
| Total Harmonic Distortion (THD) | Not Specified by Manufacturer |
| Inputs |
4 x XLR/1/4" Phone Mic/Line Combination Jacks 1 x SPDIF Coaxial Digital In |
| Output |
2 x RCA Phono, Line 1 x SPDIF Coaxial Digital Out 1 x USB 1 x 2.5mm L Terminal 1 x 1/4" Stereo Headphone Out |
| Headphone Output | Yes |
| Dimensions (WxDxH) | 10 x 8.7 x 2.84" (254 x 221.8 x 72.2mm) |
| Weight | 3.75 lb (1.7 kg) |
| Specialties |
4-Channel Hard Disk Recorder 8 x "AA" Battery or DC Power Large Backlit LCD Display Switchable 48 V Phantom Power for XLR Inputs |
- PSB-1U AC Adaptor
- USB Cable
- Carrying Case with Shoulder Strap
- Owner's Manual
- 1 Year Warranty
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