NUX NSS-4 Pulse: IR Loader and Audio Interface

Introduction

The NUX NSS-4 Pulse is an IR loader pedal featuring built-in Impulse Responses (IRs) for electric guitar, electric bass cabinets, and acoustic guitars. It serves as a practice tool with its headphone output and functions as an audio interface when connected to a PC.

Product Overview and Controls

The NSS-4 Pulse is part of the NUX MINI CORE SERIES. Its front panel features the following controls and connectors:

• LEVEL Knob: Adjusts the output volume.
• SPACE Knob: Controls the room size (reverb). Press and hold this knob to toggle the SPACE function ON/OFF. The LED indicator for this function is Yellow when ON and Red when OFF.
• PHONE Out Jack: Connect headphones for silent practice or monitoring when using the audio interface function.
• IR Selector Knob: Selects the desired IR slot.
• TAP Switch & Indicator:
  • Short Press: Toggles the effect ON/OFF. The effect is ON when the associated LED lights up.
  • Long Press: Switches between modes:
    • EG CAB (Electric Guitar Cabinet): TAP indicator is OFF.
    • BS CAB (Bass Cabinet): TAP indicator is Red.
    • AG IR (Acoustic Guitar IR): TAP indicator is Blue.
• INPUT Jack (1/4"): Connect your instrument cable. Supports stereo input when configured for stereo mode.
• OUTPUT Jack (1/4"): Connect to your amplifier or the next pedal in your signal chain. Supports stereo output when configured for stereo mode.
• USB-C Port: Used for connecting to a PC for firmware updates and for using the Pulse as an audio interface.
• FOOTSWITCH: Engages or disengages the effect.

Cabinet and IR Selections

The pedal offers a selection of IRs categorized into three modes:

EG CAB (Electric Guitar Cabinet) Mode (TAP Indicator: Off)

This mode features IRs for various electric guitar cabinets:

1. JZ120 (Roland Jazz 120)
2. DR112 (Fender Deluxe Reverb)
3. BS410 (Fender Bassman 410)
4. A212 (VOX AC30 212)
5. TR212 (Fender Twin Reverb 212)
6. 1960 (Marshall 1960A 412)
7. GB412 (Celestion Greenback 412)
8. V412 (Celestion Vintage30 412)

BS CAB (Bass Cabinet) Mode (TAP Indicator: Red)

This mode features IRs for various bass guitar cabinets:

1. DB810 (Aguilar DB 810)
2. SV810 (Ampeg SV810)
3. MKB 410 (Mark Bass 410)
4. TRC 410 (Trace Elliot 410)
5. SV410 + Tweeter (Ampeg SV410 + Tweeter)
6. Bassguy 410 (Fender Bassman 410)
7. Eden 410 (EDEN 410)
8. SV212 (Ampeg SV212)

AG IR (Acoustic Guitar IR) Mode (TAP Indicator: Blue)

This mode features IRs for acoustic guitars, simulating different pickup types:

1. G HBird EG Mag (Gibson Hummingbird for Electric Guitar Magnetic PU)
2. G J15 EG Mag (Gibson J15 for Electric Guitar Magnetic PU)
3. M D45 EG Mag (Martin D45 for Electric Guitar Magnetic PU)
4. G HBird Pie (Gibson Hummingbird for Acoustic Guitar Piezo under saddle PU)
5. G J15 Pie (Gibson J15 for Acoustic Guitar Piezo under saddle PU)
6. M D45 Pie (Martin D45 for Acoustic Guitar Piezo under saddle PU)
7. M HD28 Pie (Martin HD28 for Acoustic Guitar Piezo under saddle PU)
8. T 814 Pie (Taylor 814 for Acoustic Guitar Piezo under saddle PU)

Software and Updates

The NUX Pulse Editor Software allows for IR data import/export and USB setting adjustments. Connect the pedal to a PC via USB-C to utilize these features.

• IR Management: Load custom IR files or export existing ones.
• USB Settings: Configure USB audio interface settings.

Firmware Updates: To ensure optimal performance and access to new features, it is recommended to update the pedal's firmware. Download the latest firmware from the NUX Audio website and follow the provided instructions for installation.

URL: NUX Pulse Product Page

Note for Windows Users: For optimal audio performance on Windows PCs, download and install the ASIO driver available on the product page.

Operation Modes

Mono/Stereo Mode Switching:

To switch between mono and stereo input/output modes, press and hold the TAP switch while powering on the pedal. The TAP indicator LED will flash blue for mono mode and red for stereo mode.

Bypass Mode Switching:

To switch between buffer bypass and true bypass modes, press and hold the FOOTSWITCH while powering on the pedal. The LED color change during the power-on sequence indicates the selected mode: Green for buffer bypass, Red for true bypass. Note that the LED will typically show Red during normal operation regardless of the bypass mode.

Specifications

• Input Impedance: 1MΩ
• Output Impedance: 10KΩ
• Earphone Output Impedance: 10Ω
• Dynamic Range: 103 dB
• 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.

Safety Precautions

Please observe the following safety guidelines:

• Use only the specified voltage. Using incorrect voltage may cause fire, electric shock, or damage to the unit.
• Do not open or attempt to modify the unit. For repairs, contact an authorized dealer or service center.
• Avoid operating the unit in environments with high humidity, extreme temperatures, or direct sunlight.
• Disconnect the power adapter when the unit will not be used for an extended period.
• NUX (Cherub Technology) is not liable for damages caused by misuse, accidents, customer negligence, unauthorized modifications, or other abnormal operating conditions.
• This product complies with FCC Part 15 rules for Class B digital devices, ensuring it does not cause harmful interference and can accept any interference received.

Please keep this user manual in a safe place for future reference.