Tascam Solid State Recorder with Mic Inputs

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Easy-to-use, single-rackspace SD card recorder with XLR mic inputs


TASCAM’s SD-20M is a simple-to-use solid-state recorder for demanding installations. The 1U rackmount includes a pair of microphone preamps with phantom power for direct microphone recording. Both the mic inputs and line inputs can be recorded simultaneously in four-channel mode. The dual recording mode captures a copy of your audio at a lower level, as insurance against distorted takes.

The SD-20M includes a battery backup system – AA batteries can keep recording for hours in case of power loss. A wired remote or footswitch can be attached to control recording and playback. Variable speed playback allows the playback to be changed without affecting the pitch.


Designed for installations like schools, house of worship, and conferences, the TASCAM SD-20M is a flexible, affordable solution for long-form recording.

XLR/TRS combo inputs on the front

Simultaneous recording of 4 tracks is possible using the 2 mic and 2 line inputs

Dual recording function

In addition to the AC adapter, 4 AA batteries can provide power as a backup, enabling operation even if AC power is interrupted

Common SD/SDHC/SDXC cards are used for recording media

Support for SDXC cards up to 128 GB enables recording for even longer times

Support for high-resolution recording up to 24-bit/96kHz using WAV/BWF formats

MP3 formats are also supported, allowing recording for even longer times

Variable Speed Audition (VSA) function, which allows playback at 50–150% normal speed (in 10% increments), is convenient for uses such as language practice and transcribing meetings

XLR/TRS combo inputs (with locking mechanisms) support +4dBu, enabling balanced input from mixers and other devices, and mics that require phantom power (+48V)

RCA inputs support -10dBV line level, enabling unbalanced input from mixers and other devices

Automatic recording function starts recording when the set audio input level is detected

File incrementing function allows a recording to be split by creating new files at times set in advance and whenever desired

Pre-recording function allows the unit to record the 2 seconds of sound before recording is activated

Automatic level function allows recording to always be at the optimal level

Limiter function automatically reduces parts to suitable levels if the input level is too high

Jumpback playback allows you to press the PLAY button once during playback to move back a few seconds and resume playback

Playlist function

Mark function convenient for moving to specific locations during playback

Divide function allows files to be split at positions set with the mark function and wherever desired (only with WAV files)

File name format can be set to use a user-defined word or the date

Resume function remembers the playback position when the unit is turned off

Low cut filter with three cutoff frequencies (40/80/120 Hz)

Japanese display supported

1U rackmount size

Recording mediaSD card (64MB to 2GB), SDHC card (4GB to 32GB), SDXC card (48GB to 128GB)
File format 
Sampling frequency44.1k / 48k / 96k Hz
Quantization bit rate16 / 24-bit
Sampling frequency44.1k / 48k Hz
Bit-rate for recording32k to 320k bps
Number of channels4-channel (2 Stereo)
Analog audio inputs 
* Front panel
ConnectorXLR-3-31 / 1/4" (6.3mm) TRS combo jack 2
(1: GND, 2: HOT, 3: COLD)
Input Impedance10k
Standard input level+4dBu
Minimum input level12dBu
Maximum input level+20dBu
MICXLR : Phantom power compatible
Input Impedance2.7k
Minimum input level-67dBu (GAIN at High)
Maximum input level0dBu (GAIN at Low)
UNBALANCED (INPUT 3/L / 4/R)* Rear panel
ConnectorRCA Pin jack 1 pair
Input Impedance10k
Standard input level10dBV
Minimum input level26dBV
Maximum input level+6dBV
Analog audio outputs 
ConnectorRCA Pin jack 1 pair
Output impedance200
Standard output level10dBV
Maximum output level+6dBV
Connector2.5mm TRS jack 1
Connector1/4" (6.3mm) Stereo phone jack 1
Maximum output level20mW + 20mW or more (32 loaded, THD+N:less than 0.1)
PowerAC adapter (TASCAM PS-P1220E),
4 AA batteries
Power consumption5W (Max)
Dimensions (WHD)19.0" 17.4" 11.8" / 483 45 299.6 mm
Weight6.0 lbs. / 2.7 kg (excluding batteries)
Operating temperature41F to 95F / 5C to 35C
AccessoriesAC adapter, Rack-mount screw kit, Warranty card, Owner's manual (including warranty card)

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