4-In/4-Out USB Audio Interface
The TASCAM US-4x4 is the ideal device to get the best 4-channel audio input signals for your recordings. It features 4 high-quality Ultra-HDDA microphone preamp, 4 TRS jack inputs (2 are switchable to instrument level for guitar or bass), an all new USB driver to make for an easy installation (even on iPads, iPhones or other iOS devices), zero-latency direct monitoring, and both headphone and line output volume controls. MIDI in and out is also included. It comes bundled with Cubase LE for both Windows and Mac. With solid audio specs, iOS compatibility, and an easy-to-read angled design, the US-4x4 is the ultimate 4-channel interface for home, project, and mobile studios.

XLR and TRS Accept Balanced Mic and Line Level Signals
TASCAM's Ultra-HDDA  mic preamps design is based on discrete components, just like classic professional gear. It also has NE5532 op-amps, famously used throughout classic recording consoles and signal processors due to their sweet, musical sound. The XLR connector supplies +48V phantom power for condenser microphones. The TRS inputs are for balanced line-level signals from professional processors and synthesizers. Two of the jack inputs can be switched to high-impedance for direct recording of electric guitar and bass. (Only the XLR or 1/4" input can be used, not both at the same time). 

Simple Operation, Excellent Features
Installation of the US-4x4 is simple and fast, whether using the built-in class-complient driver or the high-performance ASIO or Core Audio drivers. Built from the ground up for superior audio performance, the software and driver suite of the TASCAM US-2x2 will keep your sessions running fast and smooth. The US-4x4 records at up to 96kHz/24-bit resolution. Even if your target is CD or MP3, recording at higher resolutions gives you more to work with in the mix and can result in a smoother sound. The most efficient computers and DAW software can produce a slight delay before reaching the outputs, which can distract some vocalists and instrumentalists. A Direct Monitoring path is included to monitor the input signal before it is sent to the computer. This allows musicians to concentrate on their performance instead of adjusting for latency delay. Standard MIDI input and output connectors allow connection with the thousands of keyboards, drum machines, controllers, and other sources that employ MIDI connectors. The interfaces can also be used for synchronized operation of multitrack recorders and other external recording equipment. Use Apple's Camera Connection Kit to connect the US-2x2 to an iPad or other iOS device. To make sure that you are able to get up and recording as quickly as possible, the US-4x4 comes bundled with a copy of Steinberg's Cubase LE.

Features:

• Four Ultra-HDDA mic preamplifiers
• Four XLR or TRS (MIC/LINE) inputs with full +48V phantom power
• Four TRS analog balanced outputs
• Two headphone outputs – each with 45mW/ch output power
• Dedicated AC adapter is included
• Ultra-HDDA (High Definition Discrete Architecture) mic preamps with −125dBu EIN
• NE5532 op-amps used at the audio input and output stages
• Up to 96kHz/24-bit recording
• Support for Windows and Mac OS X operating systems
• USB 2.0 computer connection
• Connect with iPads and other iOS devices
• +48V phantom power for all inputs
• Two switchable high-impedance inputs
• Microphone preamp gain range of 57 dB
• Direct monitoring function for zero-latency monitoring
• Tough all-metal casing for durability
• Angled design provides excellent usability on a desktop
• Balanced analog TRS output jacks suitable for connection to powered monitors
• Standard TRS headphones output jack
• Separate controls for line and headphones output volumes
• MIDI input and output
• Output sources can be selected in the setting panel
• Input sound monitoring can be set to stereo or mono
• Input muting function eliminates noise from unused inputs
• USB class compliant 2.0 support
• License card included for Steinberg Cubase LE
• Confirmed operation with major DAW software (SONAR, ProTools, Cubase, Live, Studio One, Garage Band）

Specifications:

	US-4x4
Sampling frequency	44.1k/48k/88.2k/96kHz
Quantization bit rate	16/24bit
Analog audio inputs
MIC IN	IN 1-4
Connector	XLR-3-31(1:GND, 2:HOT, 3:COLD), BALANCED
Input impedance	2.2k ohms
Nominal input level
GAIN:MAX	-65dBu (0.0004Vrms)
GAIN:MIN	-8dBu (0.3090Vrms)
Maximum input level (GAIN:MIN )	+8dBu (1.9467Vrms)
Gain	57dB
INST IN	IN 1-2
Connector	6.3mm(1/4")TS-jack(T：HOT, S：GND), UNBALANCED (When set to "INST" at MIC/LINE.INST switch)
Input impedance	1M ohms
Nominal input level
GAIN:MAX	-63dBV(0.0007Vrms)
GAIN:MIN	-6dBV(0.5015Vrms)
Maximum input level (GAIN:MIN )	+10dBV(3.162Vrms)
Gain	57dB
LINE IN	IN 1-4
Connector	6.3mm(1/4")TRS-jack(T：HOT, R：COLD, S：GND), BALANCED (When set to "MIC/LINE" at MIC/LINE.INST switch)
Input impedance	10k ohms
Nominal input level
GAIN:MAX	-53dBu(0.0017Vrms)
GAIN:MIN	+4dBu(1.228Vrms)
Maximum input level (GAIN:MIN )	+20dBu(7.75Vrms)
Gain	57dB
Analog audio outputs
LINE OUT
Connector	6.3mm(1/4")TRS-jack(T：HOT, R：COLD, S：GND), BALANCED
Output impedance	110ohms
Nominal output level	+4dBu (1.273Vrms)
Maximum output level	+20dBu (7.75Vrms)
PHONES
Connector	6.3mm(1/4") stereo phone jack
Maximum output level	45mW+45mW or more (THD+N 0.1% or less, 32ohms loaded)
MIDI IN / OUT
Connector	Din 5-pin
Format	Standard MIDI format
USB
Connector	USB B type 4-pin
Format	USB2.0 HIGH SPEED
Power
When connected PC	Dedicated AC adapter  (GPE248-120200-Z, included)
When connected iOS
Power consumption	5W
Dimensions	11.62" W x 2.56" H x 6.3" D  (296mm W ×65mm H × 160mm D)
Weight	3.53lb (1.6kg)
Operating temperature	5 to 35˚C
Bundled software	Steinberg Cubase LE
Accessories	AC adapter(GPE248-120200-Z), USB cable, Steinberg Cubase LE license card, User's manual, warranty card

Computer system requirements
Windows
OS	Windows 7(32-bit SP1, 64-bit SP1), Windows 8.0(32-bit, 64-bit), Windows 8.1(32-bit, 64-bit) * For further information of the latest OS version, please click here.
Compatible computers	Windows-compatible computer with a USB 2.0 port
CPU type/speed	Dual core/2 GHz or faster (x86)
Memory	2GB or more
DRIVER	ASIO2.0, WDM(MME)
Macintosh
OS	OS X Mountain Lion(10.8), OS X Mavericks(10.9)  * For further information of the latest OS version, please click here.
Compatible computers	Apple Macintosh computer with a USB 2.0 port
CPU type/speed	Dual core/2 GHz or faster
Memory	2GB or more
DRIVER	Core Audio, Core MIDI
iOS
OS	iOS 7