NUX NCH-4 UKIYO-E CHORUS

Mini Chorus Pedal

Overview

The NCH-4 Ukiyo-E Chorus is a mini chorus pedal that features three distinct chorus modes: ST Chorus, SCH-1, and CE-1. It utilizes NUX's DSP technology to reproduce traditional analog chorus tones.

Pedal Layout and Controls

The pedal features a compact enclosure with controls and connections clearly labeled:

FOOTSWITCH: Engages or disengages the effect. The LED indicator lights up when the effect is ON.
TAP switch & indicator: This switch cycles through the three chorus modes with a short press: ST Chorus (no light), SCH-1 (red light), and CE-1 (blue light). It also functions as a tap tempo control. For tap tempo, press and hold the switch while powering on the pedal to set the tempo, or use multiple presses to set the speed. The LED indicator flashes with the set tempo.
INTENSITY Knob: Adjusts the intensity of the effect. In SCH-1 mode, this knob also controls the treble tone.
WIDTH Knob: Adjusts the sweep range of the chorus effect.
RATE Knob: Adjusts the speed of the sweep. When using tap tempo, this knob can be used to set subdivision positions.
INPUT Jack: Connect your guitar cable here. A 1/4" TRS cable can be used for stereo input if the pedal is set to stereo mode.
OUTPUT Jack: Connect to your amplifier here. A 1/4" TRS cable can be used for stereo output if the pedal is set to stereo mode.
DC Jack: Connect a 9V DC, center-negative power supply (100mA or higher) or AC adapter here.
USB-C Port: Used for firmware updates. Connect to a PC for downloading and installing updates from the NUX website.

Chorus Modes

ST Chorus: Inspired by the MXR Stereo Chorus, this mode offers a gorgeous sound with simple controls.
SCH-1: Modeled after the ARION SCH-1, known for its attractive vintage analog chorus. It produces a wide range of tones, from clean chorus to Leslie-like effects.
CE-1: Inspired by the BOSS CE-1, the first chorus pedal. This mode replicates its warm and rich tone.

Operation Modes

Stereo/Mono Mode Switching: Press and hold the FOOTSWITCH while powering on the pedal (connecting the adapter) to switch between mono and stereo modes. When the LED flashes green, it's mono mode; when it flashes red, it's stereo mode.
Bypass Mode Switching: Press and hold the ON/OFF footswitch while powering on the pedal (connecting the AC adapter) to switch between buffer bypass (green LED) and true bypass (red LED). The LED color change is only visible at the moment of switching or when connecting power. In normal operation, the LED is red for both modes.

Firmware Updates

Firmware updates may be released to add new features or fix issues. Check the product's official HP for the latest firmware information.

To update:

Connect the pedal to your PC using a USB cable.
Press and hold the FOOTSWITCH while powering on the pedal (connecting the AC adapter) to boot into update mode.
Download the "Firmware (Mac or Windows)" from the NCH-4 product page on the NUX HP (https://www.nuxefx.com/home.html).
Extract the downloaded file.
Launch "NUX Device Updater" from the extracted folder.
Click "Select File" and choose the BIN file (~.bin) from the downloaded folder.
Click "Start Update" to begin the update process.
The updater will indicate "Update Finish" or "successfully updated." Restart the pedal to complete the update.

Note: If no update data is available on the HP, or if the available data is significantly older than your purchase date, an update may not be necessary.

Specifications

Input Impedance: 1MΩ
Output Impedance: 10KΩ
Dynamic Range: 103dB
DSP Processing: 48kHz / 32bit
A/D D/A Sampling Rate: 48kHz / 24bit
Power: 9V DC (Negative tip, Optional ACD-006A adapter)
Current Draw: less than 100mA
Dimensions: 94mm(L) x 51mm(W) x 53mm(H)
Weight: 175g

Specifications are subject to change without notice. ?

Certifications

The product complies with FCC Part 15 regulations for Class B digital devices. It also carries CE, UKCA, and RoHS certifications.

Safety Precautions

Use only the specified voltage. Using other voltages may cause fire, electric shock, or damage.
Do not open or modify the unit. Contact an authorized dealer for repairs.
Avoid using the unit in environments with high humidity, high temperatures, or direct sunlight.
Disconnect the power when not in use for extended periods.
The manufacturer is not liable for damages due to misuse, accidents, or other abnormal conditions.
This product complies with FCC Part 15 rules. Operation is subject to two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.

Keep this manual in a safe place for future reference.

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