24-bit/96 kHz USB Audio Capture

High-Quality Connectivity with Pro-Studio Extras

  • USB
  • FPT


(Oct. 23, 2013)
You can download the Driver Ver.1.0.0 for OS X Mavericks (10.9).

(Oct. 21, 2013)
You can download the Driver Ver.1.0.1 for Windows 8.1 / 8.

(Apr. 6, 2011)
Meet the latest QUAD-CAPTURE with a pair of premium VS Preamps onboard, plus superb 24-bit/192 kHz audio quality, ultra-low latency performance, and more!

High-Quality Connectivity with Pro-Studio Extras

Rugged, compact, and feature filled, the new UA-25EX is a portable-interface powerhouse. Ideal for computer-based audio engineers who appreciate mobility, this 24-bit/96 kHz USB audio interface is equipped with pro-grade microphone preamps, a newly developed analog compressor/limiter, and ground-lift functionality for studio and stage.

  • - Designed for low-noise and high-sensitivity professional recording with +4 dBu balanced In/Out
  • - 2 premium XLR/TRS jacks with improved, professional-grade mic preamps and phantom power
  • - Analog Dynamics Processing (threshold-adjustable Compressor/Limiter) with indicator on input
  • - Direct-Box functionality, essential for noise-free live stage use
  • - USB bus-powered, no AC adaptor required, ideal for mobile use
  • - High-resolution recording & playback, up to 24-bit/96 kHz through USB connection
  • - Compact and ultra-sturdy solid-metal construction
  • - Variety of input and output options
  • - Powerful, low-latency driver performance
  • - Zero-latency, direct monitoring
  • - MIDI in/out ports for MIDI recording, sequencing, control, and playback
  • - Cakewalk Production Plus Pack software included

High-Resolution Performance

Don't let its compact frame fool you - the UA-25EX is a full-featured, professional audio interface with extras you wouldn't expect in its size and price class. It's capable of handling audio at 24-bit/96kHz resolution, and boasts newly developed high-end mic preamps, plus pro-quality balanced audio inputs and outputs, and an integrated low-noise, wide-range power supply.

Analog Compression & Limiting

The UA-25EX features a newly developed analog compressor with variable attack times and threshold control for smooth capture of vocals or dynamic instruments. The accompanying limiter prevents input clipping from occurring so you'll never lose those perfect takes.

Pro-Quality Shielding with Ground Lift

With its high-grade aluminum chassis, the UA-25EX can withstand hard impacts, and is shielded against high-frequency interference from other electrical components. Should a ground loop occur, the new ground-lift function eliminates the noise by disconnecting the sleeve pin of the master output from the earth ground.

Bundled Software

Included with the UA-25EX is the Production Plus Pack from Cakewalk By Roland, a feature-rich recording software bundle consisting of SONAR LE, Project 5 LE, and Dimension LE for PC-based recording. The CD-ROM also includes the latest ASIO, WDM, and MME drivers for Windows XP and Vista (32-bit versions), plus CoreAudio drivers for Mac OSX.

Main Specifications

Number of Audio Record/Playback Channels
Record: 1 pair of stereo
Playback: 1 pair of stereo
DIGITAL IN "OFF": Full duplex (except for 96 kHz setting)
DIGITAL IN "ON": Recording only
Signal Processing
Computer interface: 24-bit (16-bit at ADVANCED DRIVER "OFF")
AD/DA Conversion: 24-bit (linear)
Sampling Frequency
Digital output: 44.1/48/96 kHz
Digital input: 44.1/48/96 kHz
AD/DA Conversion: 44.1/48/96 kHz (ADVANCE SWITCH=OFF: 44.1 kHz only)
Frequency Response
fs = 96.0 kHz: 20 Hz to 40 kHz (+0 dB/-2 dB)
fs = 48.0 kHz: 20 Hz to 22 kHz (+0 dB/-1 dB)
fs = 44.1 kHz: 20 Hz to 20 kHz (+0 dB/-1 dB) * fs ... Sampling Frequency
Nominal Input Level
XLR type: -60 to -20 dBu
1/4 inch TRS phone type: -36 to +4 dBu
Maximum Input Level
12 dB higher than Nominal Input Level
Nominal Output Level
1/4 inch TRS phone type: +4 dBu (balanced)
RCA phono type: -2 dBu
Maximum Output Level
12 dB higher than Nominal Output Level
Residual Noise Level
Output Jack: -96 dBu (S/N ratio: 105 dB)
* Input terminated with 1 k Ω, OUTPUT VOLUME: max., INPUT MONITOR: min., IHF-A, typ.
Mic Preamp Section
Phantom Power +48 V, Analog Limiter/Compressor
USB Interface
Digital Audio In/Out, MIDI In/Out

(Front Panel)
INPUT 1/L Jack, INPUT 2/R Jack: Combo type of XLR and 1/4 inch TRS phone
(balanced, with phantom power +48 V for XLR, R channel supports high impedance)
PHONES Jack: Stereo 1/4 inch phone type
(Rear Panel)

DIGITAL IN, OUT Connectors: Optical type (conforms to IEC60958 consumer format)
OUTPUT L, R Jacks: 1/4 inch TRS phone type (balanced), RCA phono type
MIDI IN, OUT Connectors
USB Connector: B type
Power Supply
USB Bus Power
Current Draw
480 mA
Owner's Manual, USB cable, CD-ROM

System Requirements

OS: Microsoft® Windows Vista® / Windows® XP Home / XP Professional SP2 or later
Computer: Windows compatible PC equipped with a USB port
CPU/Clock: Pentium® Processor 1 GHz or higher
Memory(RAM): 256 MB or more (1 GB or more is recommended)
OS: Mac OS X 10.3.9 or later
Computer: Apple® Macintosh® series with on-board USB port
CPU/Clock: Intel Processor or PowerPC G4/867 MHz or higher
Memory (RAM): 256 MB or more (512 MB or more is recommended)

Size and Weight

Width (W)
164 mm6-1/2 inches
Depth (D)
133 mm5-1/4 inches
Height (H)
46 mm1-13/16 inches
565 g1 lbs. 4 oz.

* 0 dBu = 0.775 Vrms

* USB 2.0 Compatible (works as a USB 1.1 device without changing the specifications and performance)

All specifications and appearances are subject to change.


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