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Tascam US-125M

The US-125M is a USB audio interface with mixer functionality that combines a mic, instrument and line source with a computer audio signal and feeds the mix to your computer via USB. It provides sample rates of up to 48 kHz at 16-bit audio resolution and is ideal for broadcasting (live streaming) over the internet.

The US-125M features four inputs with dedicated level controls: a microphone input (balanced XLR/TRS on rear or unbalanced mini jack on front) with switchable limiter and signal/overload indicator, a guitar input (standard phone jack), a stereo line input (RCA) and a stereo audio input from computer via USB. This USB-powered device is housed in a solid aluminum case, and can also be used as a simple stand-alone mixer.

Main Features

  • USB audio interface with mixer functionality
  • Combines a mic, instrument and line source with a computer audio signal and feeds the mix to your computer via USB
  • Ideal for broadcasting (live streaming) over the internet
  • Four inputs with dedicated level controls:
    • Microphone input (balanced XLR/TRS on rear or unbalanced mini jack on front) with switchable limiter and Signal/Overload indicator
    • Guitar input (standard phone jack)
    • Stereo line input (RCA)
    • Stereo audio input from computer via USB
  • Stereo audio output to computer via USB or directly to RCA output jacks
  • Monitor output (RCA) and headphones output (mini-jack) with level control
  • Zero-latency hardware monitoring
  • Can be used as a simple stand-alone mixer
  • Operates using standard Windows (WDM) and Mac OS X (CoreAudio) audio drivers
  • Audio resolution up to 16 bit/48 kHz
  • USB 2.0 equipped (also supports USB 1.1)
  • USB-powered, no AC adapter required
  • Solid aluminum case

Specifications

AD/DA converter
Sampling frequency 32/44.1/48 kHz
Quantization bit rate 24-bit
Analogue audio inputs and outputs
Mic input, XLR (balanced) XLR-3-31 (1: GND, 2: HOT, 3: COLD)
  Input impedance 2.2 kOhm or higher
  Nominal input level −64 dBu to −44 dBu
  Maximum input level −28 dBu
Mic input, TRS jack (balanced) 6.3-mm TRS jack (Tip: HOT, Ring: COLD, Sleeve: GND)
  Input impedance 2.2 kOhm or higher
  Nominal input level −64 dBu to −44 dBu
  Maximum input level −28 dBu
Mic input, mini-jack (unbalanced, provides plug-in power) 3.5-mm mini-jack
  Input impedance 2.2 kOhm or higher
  Nominal input level −64 dBu to −44 dBu
  Maximum input level −28 dBu
Instrument input (unbalanced) TS jack (Tip: HOT, Sleeve: GND)
  Input impedance 1 MOhm
  Maximum input level +6 dBV
Stereo line input (unbalanced) RCA pin jacks
  Nominal input level −15 dBV
  Maximum input level +21 dBV
Stereo line output (unbalanced) RCA pin jacks
  Output impedance 200 Ohm
  Maximum output level +3 dBV
Headphones output 3.5-mm stereo mini-jack
  Maximum output power 15 mW + 15 mW or higher (32 Ohm load, THD 0.1% or less)
Digital input and output
USB port USB B-type 4-pin
  Formats USB 2.0 HIGH SPEED (480 MHz)
USB 2.0 FULL SPEED (12 MHz USB 1.1 equivalent)
Audio performance
Frequency response 20 Hz–20 kHz, ±2 dB (MIC IN to LINE OUT, JEITA)
Total harmonic distortion 0.1% or less
(when direct monitoring, 1 kHz, MIC IN to LINE OUT, MIC IN knob set at −20 dB below maximum, OUTPUT knob set at −10 dB below maximum, JEITA)
Noise level, XLR −75 dBV or less
(when direct monitoring, 1 kHz, MIC IN to LINE OUT, MIC IN knob set at −20 dB below maximum, OUTPUT knob set at −10 dB below maximum, JEITA)
Computer requirements
Supported operating systems Windows XP 32-bit/64-bit
Windows Vista 32-bit/64-bit
Windows 7 32-bit/64-bit
Mac OS X 10.3.9 or later
Drivers WDM (Windows standard driver)
Core Audio (Macintosh standard driver)
Power supply and other specifications
Power supply By USB from a computer
Using a TASCAM PS-P515U AC adaptor (sold separately)
Power consumption 1 W
Dimensions (W x H x D) 150 mm x 42 mm x 122 mm
Weight 0.5 kg
Operating temperature range 5–35 °C

Design and specifications subject to change without notice.

Last modified: 2011-12-16 11:01:55 UTC