SD Recorder

SD-2u: SD Recorder

All-in-one SD recorder for audio recording, music practice and education


The SD-2u recorder is a powerful tool for musicians, educators and students. Combining high-quality SD recording with a host of useful features for music practice and general study, the SD-2u is great companion for anyone wanting to learn.

The SD-2u has two high-quality stereo microphones built into the front, as well as stereo speakers for listening back to what you just recorded. With everything you need in one small box (smaller than an A4 magazine), recording audio is fast and simple.

You can connect your own external mics, electronic musical instruments and other devices with pro-level results. Also onboard are tools for training and learning, including high-fidelity key and speed adjustment, improved Centre Cancel for creating minus-one tracks, and the all-new Centre Focus for isolating vocals and instruments. Compact, powerful and ready to travel, the SD-2u is the perfect for audio recording, learning music and languages, and much more.

  • Easy SD recording and playback in a convenient, all-in-one mobile device
  • High-quality stereo microphones and speaker system built in
  • Simple interface with Easy Guide function
  • Multiple inputs for connecting external devices—two XLR/TRS combo jacks with phantom power; Plug In Power mic jack; stereo RCA LINE IN jacks
  • Independent adjustment of playback speed and key, with improved audio quality over previous designs
  • Independent adjustment of playback speed and key, with improved audio quality over previous designs
  • Enhanced Centre Cancel function; new Centre Focus isolates vocals and instruments for learning
  • Built-in tuner and metronome
  • Runs on six AA batteries or AC adaptor; wireless remote control included
Everything you need to create professional recordings

Small, battery powered and with mics and speakers onboard, the SD-2u gives you everything you need to record, edit and play audio, wherever you are. The built-in stereo mic makes audio capture easy, while high-performance stereo speakers provide convenient sound playback of your recordings, WAV music files, lesson material, and more.

Easy, fast high-resolution recording

The SD-2u records CD-quality audio direct to widely available SD/SDHC memory cards. It’s also super-simple for anyone to operate thanks to the Easy Guide feature, which provides clear onscreen instructions that guide you through various operations. Easy Guide covers recording and overdubbing functions, creating minus-one tracks for practice and karaoke, setting proper input levels, and more. You can even choose among six different languages for the display: English, German, French, Italian, Spanish, or Japanese.

Connect external mics, musical instruments or music players

While it’s designed for professional results as a standalone unit, the SD-2u also includes connections to attach external devices (like musical instruments or music players) for various applications. Two XLR/TRS combo jacks allow you to connect your own mics (with phantom power available if needed), including a stereo field-recording mic such as the CS-15RS. There’s also a stereo mini-mic jack with Plug In Power, plus stereo RCA LINE IN jacks for connecting an instrument, music player, or another audio source.

Helps with music practice, learning languages, reviewing lectures and much more

The SD-2u is equipped with powerful features for manipulating audio playback, providing useful tools for developing music skills, learning languages, transcribing spoken-word audio, and more. You can independently adjust the speed and key with exceptional audio quality, perfect for slowing down passages to learn difficult parts or changing the key of music to suit your voice. Use A-B Repeat to play audio sections over and over, and turn on Centre Cancel to create minus-one tracks for practice and karaoke fun. There’s also a newly developed Centre Focus feature, which isolates centre-located sounds in music tracks to make them easier to hear and learn.

Robust carrying case protects your recorder

The optional CB-CD2E Carrying Case protects the SD-2u and can also store accessories like SD media, batteries, remote, etc. If you’re looking for similar features in a device that can also play and burn CDs, check out the SD-2u’s cousin, the CD-2u SD/CD Recorder.


Recorder Part
2 tracks (stereo)
Sampling Frequency
44.1 kHz
Signal Processing
AD/DA conversion: 24 bits
Recording Mode
SD/SDHC Memory Card: WAV (44.1 kHz, 16 bits)
Recording Media
SD Memory Card (supports 512 MB to 2 GB) SDHC Memory Card (supports 4 GB to 16 GB)
Recording Time (unit: min)
SD Memory Card 512 MB: 47 1 GB: 94 2 GB: 189 SDHC Memory Card 4 GB: 377 8 GB: 755 16 GB: 1511 * Each recording time is approximate. The times may change depending on the card specifications. * In case that there are plural files, the sum of recording time would be shorter than above. * Maximum recording time of one song is 74 minutes.
Recording Songs
Up to 99 songs on a single SD/SDHC Memory Card
Audio Input
Internal Stereo Microphones EXT MIC (L, R) jacks: XLR type (balanced/phantom power DC 48 V, 8 mA Max.), 1/4-inch TRS phone type (balanced/unbalanced) PLUG IN POWER MIC jack: Stereo miniature phone type LINE IN (L, R) jacks: RCA phono type
Audio Output
Internal Speakers: Stereo LINE OUT (L, R) jacks: RCA phono type PHONES jack: Stereo miniature phone type
Frequency Response
20 Hz to 20 kHz (+0 dB/-2 dB)
Nominal Input Level (variable)
EXT MIC (L, R) jacks: -51 to -8 dBu (common to XLR type and 1/4-inch phone type) PLUG IN POWER MIC jack: -51 to -13 dBu LINE IN (L, R) jacks: -24 to -4 dBu
Nominal Output Level
LINE OUT (L, R) jacks: -4 dBu
Input Impedance
EXT MIC (L, R) jacks: 8 k ohms (common to XLR type and 1/4-inch phone type) PLUG IN POWER MIC jack : 20 k ohms LINE IN (L, R) jacks: 9 k ohms
Output Impedance
LINE OUT (L, R) jacks: 1 k ohm PHONES jack: 32 ohms
16 characters, 2 lines (backlit LCD)
Power Supply
AC adaptor Alkaline battery (AA, LR6) x 6 Rechargeable Ni-MH battery (HR6) x 6
Current Draw
700 mA * Expected battery life under continuous use Alkaline battery (AA, LR6): Approx. 5.5 hours Rechargeable Ni-MH battery (AA, HR6): Approx. 6 hours The time may vary according to usage conditions, batteries used, and type of SD memory card used.
Owner's Manual Quick Start Remote controller (with battery CR2025) AC adaptor Power cord SD memory card SD card protector
Options (sold separately)
Carrying Case: CB-CD2E Stereo Microphone: CS-15RS Stand: SS-PC1
Size and Weight (excluding batteries and AC adaptor)
278 mm
11 inches
196 mm
7-3/4 inches
55 mm
2-3/16 inches
1.1 kg
2 lbs. 7 oz.
* 0 dBu = 0.775 Vrms



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