Korg
USB-DAC / ADC + preamplifier
KORG
Nu-1
★ KORG "Nu 1" is said to have been developed based on the concept of "creating good sound", which is unique to musical instrument maker KORG. There are two ways to pursue that concept. One is to install the direct heating twin triode "Nutube", which was jointly developed with Noritake Ise Electronics Co., Ltd. and developed with a completely new concept. And the other is the installation of "S.O.N.I.C. remastering technology" which is a unique technology.
The new-generation vacuum tube "Nutube" has excellent linearity characteristics as a direct heating tube, and it is said that you can enjoy the rich overtones unique to vacuum tubes.
On the other hand, "S.O.N.I.C. remastering technology" is an audio driver exclusively for this unit, which can be played with DSD, produced by Mr. Ono Seigen, a leading DSD mastering expert. This is to remaster old digital sound sources such as YouTube and other digital sounds played on a PC by real-time conversion to DSD quality, then convert to DSD 11.2MHz with Nu 1 and play. Moreover, this is not a general upsampling, but "Magic" that puts on Mr. Onoseigen's rich know-how.
The appeal of the Nu 1 as a preamplifier with a built-in USB-DAC / ADC is that the DAC chip uses Asahi Kasei Electronics' AK4490, and the ADC uses the same Asahi Kasei's AK5574. In combination with "4.5", recording / playback at DSD 11.2MHz is realized.
"Nu 1" is not only for advanced playback of digital sound sources with DSD as the main axis, but also for direct recording function including analog record at DSD 11.2MHz, which is possible only by KORG trained in the professional world, probably in the future with other manufacturers Isn't it quite difficult in terms of know-how?
There is another level of preamp that only KORG can enjoy, including the "Nutube" new-generation vacuum tube that allows you to "create a good sound".
★ To the unexplored area of DSD that no one has reached. A new world of DSD that can be realized only by USB DAC / ADC "Nu-1".
DSD 11.2MHz recording, phono amplifier compatible with MC cartridge, new functions / equipment for recording such as balanced input, balance headphone output terminal, toroidal transformer power supply, etc.
And the biggest feature of "Nu-1" is that Korg, who has been steadily stuck to "reproduction of the original sound", challenged "the sound that only Korg can make" for the first time in the audio category product.
Korg and Noritake Ise Electronics Co., Ltd. have jointly developed a new-generation vacuum tube "Nutube" for a warm sound and original technology such as an audio driver equipped with "SONIC remastering technology" that can be played with DSD produced by Ono Seigen. We generously put in, and pursue the enjoyment of listening and recording with DSD.
◆ Supports DSD 11.2MHz recording / playback
High-quality sound recording function by DSD realized in the DS-DAC series. Realizes recording / playback at DSD 11.2MHz in combination with the included software "AudioGate (Ver4.5)".
Evolution from DSD 5.6MHz to 11.2MHz. Know-how about DSD recorders, DSDs and analog circuits cultivated in the MR series, which are used even in harsh professional recording sites, are all updated into this unit in accordance with 11.2MHz compatibility, and the best sound quality recognized by professionals is provided. Realization.
You can DSD-record your own sources such as records, change the song order with the included software "AudioGate" that also has a rich function as a music player, and shuffle and enjoy playing them easily. "AudioGate" is compatible with most audio formats, you can carry the source recorded in DSD to mp3 or FLAC, and carry it with a portable digital audio player.
◆ Record player directly connected, phono amplifier compatible with MM / MC cartridge (MM / MC switching is rear panel)
You can easily archive analog records with the highest sound quality. Equipped with an RCA phono input terminal and a ground terminal that can be directly connected to a record player. Built-in phono amplifier compatible not only with MM cartridges but also with MC cartridges
Equipped with RCA and XLR terminals as LINE inputs independent of the phono input terminals. It is the best system to archive not only record players but also cassette decks and other important analog assets.
◆ DSD phono equalizer with selectable recording / backsizing and type
The DSD phono equalizer is built into the included software "AudioGate". In addition to general RIAA, it also supports 5 types of curves for LP. Not only can be recorded at the time of recording, but it can also be applied directly to the original sound of the recorded record
Furthermore, in AudioGate 4.5, 3 types of curves have been added for SP records. With the latest technology, we approach the true capabilities of analog records, which until now could not be extracted even by high-end audio equipment.
◆ Analog preamplifier capable of stand-alone drive without a PC
In addition to connecting to a PC (USB mode), it also has a preamplifier function (ANALOG mode) with a new built-in analog RIAA circuit
Of course, you can also use it as an analog preamplifier at the time of Line input, and you can add the tube sound by Nutube to your audio system.
◆ New generation direct heating twin triode KORG Nutube (6P1 x 2) installed
The most important part in creating the desired sound that only Korg can produce is the "Nutube" jointly developed by Korg and Noritake Ise Electronics Co., Ltd.! A vacuum tube made in Japan that is developed / produced with the latest technology and boasts high quality with long life and power saving.
In terms of performance, Nutube has excellent linearity characteristics as a direct heating tube, and reproduces the rich overtones unique to vacuum tubes. This overtone adds an exquisite taste to the sound of vocals and musical instruments, and the pleasure of listening again to your favorite song you listened to many times with this product
The newly developed Nutube HDFC (Harmonic-Detecting Feedback Circuit) allows adjustment of this overtone volume.
◆ Full differential circuit for high sound quality
The output is equipped with XLR balanced LINE output for each of LINE OUT / USB-DAC DIRECT OUT 2 lines, and also supports +4 dB output of business equipment level
During recording, the audio signal from the XLR input is input to the high-end AD converter (Asahi Kasei Electronics AK5574) while maintaining balanced processing. During playback, the audio signals from the two DA converters (same as AK4490) pass through the left and right independent output circuits and Nutube circuits (bypassable), XLR output, and XLR-4 type balanced headphone jacks. output
The analog signal part, from input to output, is composed of the highest differential full differential circuit that suppresses the influence of noise on the board as much as possible.
◆ Audio driver "S.O.N.I.C. remastering technology" for DSD real-time conversion deployment
Includes "Seigen Ono Natural Ideal Conversion (Seigen Ono Natural Ideal Conversion) remastering technology", a Nu I-only audio driver produced by Mr. Ono Seigen, a leading DSD mastering player, that can be played with DSD. "S.O.N.I.C. remastering technology" outputs all sounds played on a PC from this unit by "remastering" to DSD quality by real-time conversion. Mr. Onoseigen's know-how, which is different from mere up-sampling, is poured.
◆ Supports 11.2MHz delivery of high-resolution streaming service "PrimeSeat"
◆ Equipped with headphone amplifier. XLR-4-32 / BALANCED, φ6.3mm stereo phone jack
◆ Adopted toroidal transformer power source that emphasizes analog sound quality
It's a sequel.
■ Specification ■
Supported formats (USB)
DSD: 2.8224MHz / 5.6448MHz / 11.2896MHz, 1bit
3.072MHz / 6.144MHz / 12.288 MHz, 1bi (only when using t S.O.N.I.C. remastering technology)
PCM: 44.1 / 48 / 88.2 / 96 / 176.4 / 192 / 352.8 / 384kHz, 16bit / 24bit
Host interface: USB2.0 (high speed), isochronous asynchronous transfer
Audio driver: ASIO2.1, WDM, Core Audio
Power consumption: 40W
External dimensions: 432 (W) x 282 (D) x 93 (H) mm
Weight: 5.9 kg
Major standards
Frequency characteristics: 10Hz to 80kHz -3dB (USB-DAC DIRECT), 10Hz to 20kHz ± 1dB (fs = 44.1kHz / 48kHz)
Dynamic range: 120 dB (20 Hz to 20 kHz)
Vacuum tube: Nutube 6P1 x 2
Input terminal
Balanced input terminal XLR (2: HOT)
Specified input level: +4 dB
Maximum input level: +20 dB (0 dBFS, 0 dB-SACD)
Input impedance: 22kΩ
Line input terminal / RCA
Specified input level: -6 dB
Maximum input level: +6 dB (0 dBFS, 0 dB-SACD)
Input impedance: 50kΩ
Phone input terminal / RCA
MC
Specified input level: 0.3 mV
Maximum input level: 5.0 mV
Input impedance: 220Ω
MM
Specified input level: 5 mV
Maximum input level: 35 mV
Input impedance: 50kΩ
Output terminal
Balanced output terminal XLR-3-32 (2: HOT)
Specified output level: +4 dB
Maximum output level: +20 dB (0 dBFS, 0 dB-SACD)
Load impedance: 600Ω or more
Line output terminal / RCA pin / jack
Specified output level: -6 dB
Maximum output level: +6 dB (0 dBFS, 0 dB-SACD)
Load impedance: 10 kΩ or more
Headphone output terminal
Balanced output terminal-XLR-4-32 (1: L +, 2: L-, 3: R +, 4: R-, screen: GND)
Maximum output level: 500mW + 500mW ・ 60Ω, 300mW + 300mW ・ 300Ω
Load impedance: 32Ω or more
φ6.3mm stereo phone jack
Maximum output level: 400mW + 400mW ・ 32Ω
Load impedance: 16Ω or more
Word clock terminal IN / OUT: BNC, 75 Ω
Supported OS
Windows: Microsoft Windows 10 (32bit, 64bit)
Mac OS: Mac OS X 10.11 El Capitan or later
Accessories: Power cord, USB cable, instruction manual