FEATURES AT A GLANCE. Multi-channel and stereo USB audio interface for PC/Mac Connect to iPhone/iPad with Apple iPad Camera Connection Kit or Lightning-to-USB Camera Adapter (sold separately), plus 2 AA batteries or optional AC adapter for power Two mic/line inputs with high-performance mic preamps High-quality recording and playback at resolutions up to 24-bit/96 kHz Compatible with Zoom interchangeable input capsules via 10-pin connector Standalone AD/DA conversion Functions as a two-channel mic preamp with analog and digital outputs Approximately 4 hours of operation with 2 AA alkaline batteries Includes download code for Ableton Live 9 Lite Four-channel simultaneous inputs Hi-Z support (input 1) Zero-latency direct monitoring Three TRS phone jack outputs Dedicated RCA L/R and headphone outputs MIDI I/O S/PDIF optical/coaxial input and output Gain control knobs for each input +48V phantom power for inputs 1 and 2 Accepts standard AA alkaline or NiMH rechargeable batteries Thông Số Kỹ Thuật Audio Interface Zoom U44. ANALOG IN: INPUT 1/2. CONNECTOR TRS/XLR combo jacks (XLR: 2 hot, TRS: TIP hot) INPUT GAIN 0 – 43 dB INPUT IMPEDANCE 2.6 k Ω (MIC IN) 1.1 M Ω (when Hi-Z ON) MAXIMUM INPUT LEVEL +2.7 dBu (MIC IN) /+20.7 dBu (TRS IN) PHANTOM POWER +48V ANALOG IN: MIC IN. SUPPORTED ZOOM INPUT CAPSULES XYH-6, MSH-6, SGH-6, EXH-6, SSH-6, XYH-5 ANALOG OUT: MAIN OUT L/R. CONNECTOR TRS phone jacks (unbalanced) MAXIMUM OUTPUT LEVEL +10 dBu (at 0 dBFS) OUTPUT IMPEDANCE 330 Ω ANALOG OUT: LINE OUT 1/2. CONNECTOR RCA (coaxial) MAXIMUM OUTPUT LEVEL +8 dBu (at 0 dBFS) OUTPUT IMPEDANCE 1kΩ ANALOG OUT: PHONES. CONNECTOR Standard stereo phone jack 30 mW x 2 (into 32 Ω load) MAXIMUM OUTPUT LEVEL +10 dBu (at 0 dBFS) OUTPUT IMPEDANCE 33 Ω DIGITAL IN/OUT: S/PDIF OPTICAL. CONNECTOR TOSLINK SUPPORTED SAMPLING FREQUENCIES 96 kHz, 88.2 kHz, 48 kHz, 44.1 kHz DIGITAL IN/OUT: S/PDIF COAXIAL. CONNECTOR RCA (coaxial) SUPPORTED SAMPLING FREQUENCIES 96 kHz, 88.2 kHz, 48 kHz, 44.1 kHz Additional Specifications. FREQUENCY CHARACTERISTICS At 44.1 kHz: ±1.5 dB: 20 Hz - 20 kHz At 96 kHz: ±2 dB: 20 Hz - 40 kHz INPUT CONVERSION NOISE Measured EIN: -119.5 dB (IHF-A) at 43 dB, 150 Ω input NUMBER OF AUDIO RECORDING AND PLAYBACK CHANNELS Recording: 4 channels Playback: 4 channels SAMPLING FREQUENCIES 96 kHz, 88.2 kHz, 48 kHz, 44.1 kHz BIT DEPTH 24-bit INTERFACE USB 2.0 MIDI IN/OUT 5-pin DIN jack POWER SOURCE USB bus power (Type B) ZOOM AD-17 (Micro-B) DC 5V power supply (Micro-B) 2 AA batteries (4 hours continuous operation with phantom power off) POWER CONSUMPTION 5W maximum DIMENSIONS 198.8 mm (D) 92.3 mm (W) 42.7 mm (H) WEIGHT (MAIN UNIT ONLY) 310 g U-44 SYSTEM REQUIREMENTS. WINDOWS OS: Windows® 8.1/10/11 (32bit/64bit) CPU: Intel® Core i3 or faster* USB: USB 3.0/USB 2.0*** Operation is not guaranteed with CPUs from Atom, Celeron or Pentium series or CPUs made by AMD. ** Only USB host controllers with Intel Chipsets are supported. Operation is not guaranteed when used with USB hubs or expansion cards. MAC OS: Mac® OS X 10.9.5 ~ macOS 13 CPU: Intel® Core i3 or faster USB: USB 3.0/USB 2.0** Operation is not guaranteed when used with USB hubs or expansion cards. IPHONE/IPAD OS: iOS 7.1 ~ 16, iPadOS 15 ~ 16 * Requires 2 AA batteries or optional AC adapter for power, plus an Apple iPad Camera Connection Kit or Lightning-to-USB Camera Adapter.
