The UA-25 is a powerful USB Audio/MIDI interface designed to offer premium sound quality, rugged durability, and complete portability for computer-based audio engineers. The UA-25 is compact enough to travel anywhere you can take your computer. The UA-25 is constructed of high-grade aluminum for the chassis; it can withstand hard impacts that are normally associated with traveling or working in the field, and the aluminum is an excellent shield against high-frequency interference from other electrical components. The UA-25 is USB powered, so you never have to plug it into a wall socket, but it can still power condenser microphones with its 48V phantom power. The seasoned audio professional will love the UA-25 for its ability to output audio at +4dBu from the balanced 1/4" outputs, making it the best portable audio interface to shuttle between the field and the studio.

• Solid aluminum chassis — portable and durable
• Premium audio quality
• Wide variety of I/O
• Built-in analog limiter
• Zero-latency direct monitoring
• USB-powered phantom powered preamps
• +4 dBu output for pro applications
• Supports ASIO 2.0, WDM, MME, and Mac OS X CoreAudio

Solid Aluminum Chassis — Portable and Durable

All of Edirol’s latest audio interface technology is condensed into the compact UA-25, giving the user the highest-performance 24-bit/96kHz recording and playback via USB.

Premium Audio Quality

The UA-25 uses powerful analog electronics coupled with well-matched A/D & D/A converters for superior audio fidelity.

Wide Variety of I/O Ports

Wide range of input and output ports in a compact case. A pair of Neutrik XLR/TRS combo jacks with Phantom power, Hi-Z port for guitar direct connection, S/PDIF optical I/O ports and MIDI IN/OUT ports.

Balanced I/O Ports

The UA-25 generates low-noise and has a wide-range power supply all via USB. Thanks to this, the UA-25 gives +4 dBu balanced professional audio input and output connections.

Two High-Quality Mic Preamps

Includes a pair of high-quality microphone preamps using premium analog components. It provides a clean recording environment to give a perfect recording.

Built-in Analog Limiter

Reduce sudden overloaded sounds or popping noises in your recordings. You can often get overloaded levels while recording on the fly. With this switch set, you can still achieve a high-quality sound while retaining a wide dynamic range. The side diagram shows the Limiter characteristics.

Zero-Latency Direct Monitoring

The UA-25 provides ultra low latency with maximum performance from popular music software such as Sonar, Logic, and Cubase. You can control Direct Monitoring from the front panel, not only for ASIO 2.0-compatible applications but also for others. Ideal for soft synths controlled from MIDI devices.

Driver Compatibility (WDM, ASIO 2.0, and CoreAudio)

The bundled CD-ROM has drivers for WDM (Windows XP/2000)/ASIO 2.0 (Windows, Mac OS 9) and CoreAudio (Mac OS X). In addition, you can choose to use either the advanced or OS-standard driver, via the ADV switch. Sound Manager for audio and OMS/FreeMIDI compatible on Mac OS 9 and Windows98 and Me as well.

USB Bus Powered

Just connect one USB cable. No need for an AC adaptor. In combination with your laptop, you get a quality field recorder. The UA-25 is the audio interface for mobile users — ideal for the traveling musician.

Main Specifications

• Number of Audio Record/Playback Channels
  • Record: 1 pair of stereo
  • Playback: 1 pair of stereo
  • DIGITAL IN SWITCH = OFF: Full duplex (except for 96 kHz setting)
  • DIGITAL IN SWITCH = ON: Recording only
• Signal Processing
  • PC interface: 24 bits (ADVANCE SWITCH = OFF: 16 bits)
  • AD/DA Conversion: 24 bits (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
  • 96 kHz: 20 Hz to 40 kHz (+0 dB/-2 dB)
  • 48.0 kHz: 20 Hz to 22 kHz (+0 dB/-1 dB)
  • 44.1 kHz: 20 Hz to 20 kHz (+0 dB/-1 dB)
• Nominal Input Level
  • nput Jack L, R (XLR type): -60 to -20 dBu
  • Input Jack L, R (1/4 inch TRS phone type): -36 to +4 dBu
• Nominal Output Level
  • Output Jack L, R (1/4” TRS phone type): +4 dBu (balanced)
  • Output Jack L, R (RCA phono type): -2 dBu
• Residual Noise Level
  • Output Jack: -96 dBu (S/N ratio: 105 dB)
  • (Input terminated with 1 k ohms, OUTPUT VOLUME: max., INPUT MONITOR: min., IHF-A, typ.)
• Interface: USB
• Digital input/output
  • Optical type (conforms to IEC60958 consumer format)
• Connectors
  • Front Panel
    • Input Jack L, R
    • XLR type (balanced, phantom power +48 V)
    • 1/4” TRS phone type (balanced) *
    • * Input Jack 2: high impedance is supported
    • Headphones Jack (Stereo 1/4 inch)
  • Rear Panel
    • Digital Input Connector (Optical type)
    • Digital Output Connector (Optical type)
    • Output Jack L, R
      • 1/4 inch TRS phone type (balanced)
      • RCA phono type
    • MIDI Connectors (IN/OUT)
    • USB Connector (B type)
    • Power Supply: USB Bus Power
    • Current Draw: 480 mA
    • Dimensions:
      • 164 (W) x 133 (D) x 46 (H) mm
      • 6-1/2 (W) x 5-1/4 (D) x 1-13/16 (H) in
    • Weight: 554 g / 1 lb 4 oz

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