24-bit Digital USB Audio/MIDI Interface

Affordable, functional and portable audio/MIDI interface.

  • USB
  • FPT


Please check the latest DUO-CAPTURE.

Affordable, functional and portable audio/MIDI interface.

The UA-20 is the standard model to Edirol's rapidly expanding UA series of USB Audio Capture devices. The unit can accept input from Mic, Line and even guitar level signals. The audio is converted at 24-bit quality and is transferred to your computer via industry standard low latency WDM, ASIO, MME drivers for compatibility with all major sequencing platforms, the input signal may be also monitored directly in hardware. Outputs include analogue, digital and headphone. The built-in MIDI in and out utilize Edirol's Fast Processing Technology for super accurate MIDI timing with any sequencing software on Mac or PC platforms and can be used with both OMS or FreeMIDI drivers on the Apple Macintosh. The UA-20 requires no external power supply and is ideal for use by mobile laptop or Powerbook users. The unit ships with drivers for Windows XP, 2000, Me, 98, MacOS X, and Mac OS 9.x, 8.5 and may also be used with the native USB audio drivers that are included with both Mac & PC.

  • - Audio and MIDI in a compact unit.
  • - Fully equipped with I/O jacks.
  • - Great tool for creating music.
  • - Edirol's FPT Technology.

Audio and MIDI in a compact unit

A 24-bit USB audio interface for high-quality audio I/O and a USB MIDI interface have been combined into one easy to use device.

Fully equipped with I/O jacks

It comes with two standard audio input jacks for line,mic, guitar and switching them is nothing more than a simple touch of the input source switch. For output terminals, it comes with S/P DIF digital (optical) and RCA jacks. Also, a headphone jack is provided with adjustable volume.

Great tool for creating music

As a USB Audio/MIDI device for making music, the UA-20 is perfect for those using a computer-based software synthesizer or for those using a MIDI device such as a keyboard.

Edirol's FPT Technology

Direct monitoring is supported with zero latency. Also, since the MIDI interface employs FPT, MIDI I/O is fast, efficient, and stable. It can also take power from the bus, which makes it great for mobile applications.

Number of Audio Record/Playback Channels (Full duplex)

1 pair of stereo
1 pair of stereo

Signal Processing

PC interface
24 bit

Sampling Rate

Digital output
44.1 kHz

Nominal Input Level

-45 – -10 dBu

Input Impedance

22 k ohms
470 k ohms
22 k ohms

Nominal Output Level

-10 dBu

Output Impedance

1 k ohms

Residual Noise Level

Master Out
-105 dBu or less
(input terminated with 1 k ohm, Master Volume = max.,
Input Monitor = off, IHF-A, typ.)


Digital output (Optical Type , conforms to S/P DIF)


Input Jack (1/4 inch phone type) x 2
Digital Out Connector (Optical type)
Headphones Jack (Stereo miniature phone type)
Master Out Jack (RCA phono type)
MIDI Connectors


Power Supply
Supplied from the computer
Current Draw
170 mA
Owner’s Manual
USB cable

Size and Weight

Width (W)
149 mm5-7/8 inches
Depth (D)
111 mm4-3/8 inches
Height (H)
43 mm1-11/16 inches
210 g0 lbs. 8 oz.

(0 dBu = 0.775 V rms)

All specifications and appearances are subject to change.


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