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Introduction
The R-44 is a compact, four channel, solid-state field recorder that uses SD or large capacity SDHC cards as the storage media enabling quiet and reliable recording for a variety of professional audio needs. Capture up to 4 channels of uncompressed audio with selectable bit depths (16-bit or 24-bit) and sampling frequencies (44.1kHz/48kHz/88.2kHz/96kHz/192kHz). Onboard effects include limiter, low cut filter, 3-band EQ, 6-band GEQ, Enhancer, and DeEsser. The R-44 is a part of the EDIROL group of field recorders. Compare Audio Field Recorders.
Weighing in at just less than 3 lbs including batteries makes the R-44 a perfect high quality recording solution for videographers, musicians, teachers, and sound designers to take anywhere.

Main Features
Pro quality four channels recordings to large capacity SDHC cards.
The Edirol R-44 is designed for professional use within a very conveniently sized package. Capture up to 4 channels of uncompressed audio with selectable bit depths (16-bit or 24-bit) and sampling frequencies(44.1kHz/48kHz/88.2kHz/96kHz). R-44 employs SD cards or large capacity SDHC cards as the recording media. No moving parts enables the most silent and reliable operation possible.
Built-in stereo microphones and monitor speakers
Although the R-44 is compact, all the necessary functions are included. Built-in high quality microphones and speakers make recording and monitoring without external devices possible.
| Built-in Effects | |
| 3-Band EQ | 3-band parametric EQ ; allows precise equalization with high/low shelving and peaking |
| 6-Band Graphic EQ | 6 point frequency band equalization; ideal for recording |
| Noise Gate | Minimizes noise during low audio levels, cuts low frequency noise |
| Enhancer | Cleary defines and enhances sound; good for dialogue |
| Comp & DeEsser | Cuts hissing, smoothens the sound, makes audio level uniform |
| MS Mic Mixing | Generates stereo mix with specified spread from inputs of Mid-Side Microphones |
| * Effects can be applied on both input and output * Effects are not available while sample rate is set to 192kHz |
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Built-in limiter, low-cut filter and studio class effects
An on-board limiter helps suppress sudden peaks in sound from an input source. A low-cut filter is included to help prevent things like wind noise or mic handling noise. Studio class effects such as 3-Band EQ, 6-Band GEQ, Enhancer or DeEsser can be used as tools to greatly improve audio quality. Effects can be applied while recording or simply for monitoring/playback.
Pre-Record function ensures you never miss that important moment again
The Pre-Record function buffers input signals for a user-definable amount of time. When the REC button is pressed, the material from the previous few seconds (selectable) is included. This also helps reduce sound bites at the beginning of a recording by not having to start the recorder too early.
Combo type analog jacks and digital output enables connection with a variety of devices
The combo input jacks (4) supports the connection of both XLR and 1/4 inch plugs. XLR inputs are equipped with phantom power. Eleven steps of input sensitivity enable the connection of various devices with a variety of inputs levels from microphones to musical instruments. High quality analog circuitry in the preamp ensures superior recording results.

High-contrast Organic LED display and operation-oriented user interface
The high contrast, high response organic LED screen, viewable from wide angles ensures fluid operation in field recording situations. The high response of level meters makes precise level adjustments possible. All the necessary switches and knobs are located on the top and front panels. Self-lit buttons on all the key controls enable clear-cut recording operations.
Capture eight channels by linking two units
The Control Sync terminal enables synchronized operation of 2 units. Control the second unit from the master by simply connecting two with a stereo mini cable. The master unit can remotely control REC standby, REC start and REC stop of the slave unit. This function enables 8-channel recording in a compact space and at an affordable price.
Link to computer via high speed USB
The R-44 storage can be mounted on computers with a simple USB 2.0 connection. It is seen as an USB storage device on any computer. You can copy data back and forth with a simple drag & drop operation.
Four hours of recording with four AA batteries
The R-44 can be operated with 3 types of power: AC adaptor, 4-pin external battery and AA batteries. Four hours* of operation is possible with NiMH or alkaline batteries.
* at 16-bit/44.1kHz stereo. No phantom power and pre-record disabled.
Specifications
| Recorder Section | |||||||||||||||||||
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Channels |
4 | ||||||||||||||||||
| Data Type | Format : WAV/BWF | ||||||||||||||||||
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Sampling Bit Rate |
16/24-bit | ||||||||||||||||||
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Sampling Frequency |
44.1kHz/48kHz/88.2kHz/96kHz/192kHz (Limited to Stereo x 1 at 192kHz) * 16 or 24-bit sampling rate can be selected with any frequency |
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Recording Media
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SDHC memory card (compatible with 64 MB - 8 GB*)* As of November 2007. | ||||||||||||||||||
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Recording Time using 8 GB SDHC card |
* Recording times are approximate. Actual results may vary somewhat. |
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| Input / Output | |||||||||||||||||||
| Analog Input | Ch 1 - 4 : XLR/TRS Combo type, XLR type (phantom powered), TRS type (balanced/unbalanced), Stereo Built-in Microphones | ||||||||||||||||||
| Analog Output | Ch 1 - 4 : RCA Pin type (line output) Headphone : Stereo Phone type (1/4 inch) |
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Digital In/Out
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RCA Pin type (IEC 60958-3) | ||||||||||||||||||
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Input Impedance
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XLR: 4k ohms or greater (balanced), TRS: 6k ohms or greater (balanced) | ||||||||||||||||||
| Nominal Input Level | 11 steps : -56, -50, -44, -38, -32, -26, -20, -14, -8, -2, +4 (Input Level Knob : Center) | ||||||||||||||||||
| Maximum Input | +24 dBu (Input Sens Knob: +4 dBu) | ||||||||||||||||||
| Output Impedance | Line Output : 600 ohms | ||||||||||||||||||
| Recommended Load Impedance | Line : 4k ohms or greater Headphone : 16 ohms or greater |
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| Output Level | Line Output : -20 dBu (fixed) Headphone : 40 mW + 40 mW |
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| Total Harmonic Distortion + Noise | Line Output : 0.02 % (Input Sens : +4 dBu) | ||||||||||||||||||
| Noise Level | Line Output : -100 dBu (Input Sens : +4 dBu, Input Level : Center) | ||||||||||||||||||
| Residual Noise Level | Line Output : -103 dBu (Input Sens : +4 dBu, Input Level : Minimum) | ||||||||||||||||||
| Frequency Response | 20Hz - 40kHz(0/-3 dB) | ||||||||||||||||||
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Dynamic Range |
AD : 100 dB DA : 104 dB |
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Phantom Power |
48 V + or - 4 V, 8 mA per 1 channel (20 mA or less in all channels) | ||||||||||||||||||
| Other Terminals | |||||||||||||||||||
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USB Port |
Mini-B Type Connecter USB 1.1 or 2.0 High Speed (Mass Storage Class) |
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Control Sync Jack |
Stereo Mini Type Jack Word clock sync and start/stop remote control of 2 units * Remote control function does not guarantee the exact same REC start time |
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| Miscellaneous | |||||||||||||||||||
| Display | 128 x 64 dot organic LED | ||||||||||||||||||
| Power Supply | AC adaptor (PSB-1U), AA type battery x 4 (Alkaline or NiMH) | ||||||||||||||||||
| Current Draw | 1.2 A | ||||||||||||||||||
| Dimensions | 157(W) x 183(D) x 61(H) mm (6-3/16(W) x 7-1/4(D) x 2-7/16(H) inches) | ||||||||||||||||||
| Weight | 1.3 kg (2 lbs 14 oz) including batteries | ||||||||||||||||||
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* 0 dBu = 0.775 Vrms |
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Compatible SDHC Cards
| Manufacturer | Model ID/Capacity |
| Kingston | SD2/8GB 8GB SD2/4GB 4GB SD/2GB 2GB SD/2GB 2GB SD/1GB 1GB |
| Lexar | SD2GB-231 2GB SD1GB-231 1GB SD512-231 512MB |
| Panasonic | RP-SDV32GU1K 32GB(6) RP-SDV16GU1K 16GB RP-SDV08GU1K 8GB RP-SDV04GU1K 4GB RP-SDV02GU1A 2GB RP-SDR02GU1A 2GB RP-SDQ02GU1A 2GB RP-SDV01GU1A 1GB RP-SDR01GU1A 1GB RP-SDQ01GU1A 1GB RP-SDR512U1A 512MB |
| Sandisk | SDSDRH-016G-A11 16GB SDSDRH-8192-A11 8GB SDSDBR-4096-A10 4GB SDSDRH-4096-A10 4GB SDSDRH-2048-A10 2GB SDSDB-2048-A11 2GB SDSDB-1024-A10 1GB SDSDH-1024-A11 1GB SDSDB-1024-A10 1GB SDSDH-512-A10 512MB SDSDH-512-A11 512MB SDSDB-256-J60 256MB |
| Toshiba | SD-M32G 32GB SD-M16G 16GB SD-HC008GT4 8GB |



