KORG / NU-1 1BIT USB-DAC/ADC+PREAMP

A USB DA / AD converter that pursues Korg's unique sound. The new generation vacuum tube "Nutube" jointly developed by Korg and Noritake Itron Electronics Co., Ltd. produces a warm sound.

[Audio Interface]
■ Number of channels: 2 channels
■ Supported formats (USB)
DSD: 2.8224MHz / 5.6448MHz / 11.2896MHz, 1bit
DSD: 3.072MHz / 6.144MHz / 12.288 MHz, 1bit (only when using S.O.N.I.C. remastering technology)
PCM: 44.1kHz / 48kHz / 88.2kHz / 96kHz / 176.4kHz / 192kHz / 352.8kHz / 384kHz, 16bit / 24bit

■ Host interface
USB2.0 (high speed), isochronous and asynchronous transfer

■ Audio driver
ASIO2.1, WDM, Core Audio

[General]
Indicator: STANDBY / ON, CLOCK, Nutube ON / OFF, DSD / PCM mode display
Automatic power off: No operation / no input for 30 minutes (MODE = ANALOG and AUTO OFF SW = ON)
Power supply: AC100V
Power consumption: 40W
External dimensions: 432 (W) x 282 (D) x 93 (H) mm (including protrusions)
Mass 5.9kg

[Major standards]
■ Frequency characteristics
10Hz ~ 80 kHz -3dB (@ USB-DAC DIRECT)
10Hz ~ 20kHz ± 1dB (@ fs = 44.1kHz / 48kHz)

■ Dynamic range: 120dB (TYP.) @ 20Hz ~ 20kHz

[Vacuum tube]
Nutube 6P1 x 2

【connector】
■ INPUTS LINE L, R
Shape: XLR-3-31 (1: GND, 2: HOT, 3: COLD), BALANCED
Default input level: + 4dBu (1.23Vrms)
Maximum input level: + 20dBu (7.75Vrms): (0dBFS, 0dB-SACD)
Input impedance: 22kΩ

Shape: RCA pin jack
Specified input level: -6dBV (0.5Vrms)
Maximum input level: + 6dBV (2.0Vrms): (0dBFS, 0dB-SACD)
Input impedance: 50kΩ

■ INPUTS PHONO L, R
Shape: RCA pin jack
Default input level: 0.3mVrms @ 1kHz (MC) / 5mVrms @ 1kHz (MM)
Maximum input level: 5.0mVrms @ 1kHz (MC) / 50mVrms @ 1kHz (MM)
Input impedance: 220Ω (MC) / 50kΩ (MM)

■ OUTPUTS LINE L, R / USB-DAC DIRECT L, R
Shape: XLR-3-32 (1: GND, 2: HOT, 3: COLD), BALANCED
Specified output level: + 4dBu (1.23Vrms)
Maximum output level: + 20dBu (7.75Vrms): (0dBFS, 0dB-SACD)
Load impedance: 600Ω or more

Shape: RCA pin jack
Specified output level: -6dBV (0.5Vrms)
Maximum output level: + 6dBV (2.0Vrms): (0dBFS, 0dB-SACD)
Load impedance: 10 kΩ or more

■ PHONES
Shape: XLR-4-32 (1: L +, 2: L-, 3: R +, 4: R-, screen: GND), BALANCED
Maximum output level: 500mW + 500mW @ 60Ω, 300mW + 300mW @ 300Ω
Load impedance: 32Ω or more

Shape: φ6.3mm stereo phone jack
Maximum output level: 400mW + 400mW @ 32Ω
Load impedance: 16Ω or more

■ WORD CLOCK IN / OUT shape: BNC receptacle, 75Ω

■ USB (device) shape / format: Type B / USB 2.0 compliant High speed

[Supported OS]
Microsoft Windows 10 (32bit, 64bit), Mac OS X 10.11 El Capitan or later

【accessories】
Power cord, USB cable