Nux NAI5 Optima Air Acoustic Guitar Preamp / DI with IR Loader


Nux NAI5 Optima Air Acoustic Guitar Preamp/DI with IR Loader

The Nux Optima Air is a dual-switch acoustic guitar simulator with a preamp for acoustic and electric guitars. It simulates any acoustic guitar tone, and converts it into an IR file with the best-optimized sound, depending on your guitar and pickup type.

NUX Optima Air has a unique profile capture function, so you can create your own acoustic guitar profile (IR file) by capturing your favorite acoustic guitar's sound. The IR loader is combined with a pre-amp that allows you to fine-tune your sound with a 3-band equalizer. There’s also an extra one-knob-control Reverb Effect. Attach any effect pedal using the SEND/RETURN effect loop, and add the Optima Air into the signal chain.

There is an XLR DI output for direct line/mixer connection, headphones output for silent play, and auxiliary input to connect and play along to a music player.

Features and Knob Functions

  • IR Level: Adjusts the simulated signal (Impulse Response file)
  • LEVELSelect (Push to Save): In manual mode, you can choose the IR file. And you can save your customized preset by pushing the knob
  • Gain: Adjusts the signal input Gain level

3-Band EQ:

  • Bass: Adjusts the low-frequency level
  • Middle: Adjusts the middle-frequency level
  • Treble: Adjusts the high-frequency level

IR Footswitch:

  • Manual Mode: Engage/disengage the selected IR file. Acoustic guitar simulation ON/OFF
  • Preset Mode: Bank Down. Also, if you are editing a preset, you can push the IR footswitch to exit without saving

AMP Footswitch:

  • Manual Mode: Activates the pre-amp section. When you engage the AMP, you can use the Gain and the 3-band EQ
  • Preset Mode: Bank Up. Also, If you are editing a preset, while changing the preset name, you can push the AMP footswitch and move the cursor to the next selection area to choose a letter, number or symbol


Brand:- Nux

Model:- NAI5 Optima Air

Sampling Quality:- 24-bit, 48kHz

Built-in Profiles:- 15 Acoustic Guitar Profiles with IR Level Control

Presets Slots:- 9

EQ:- Gain, Bass, Middle, Treble

Send/Return:- 6.35mm (1/4 inch)

Input/Output:- 6.35mm (1/4 inch)

DI Out:- Male XLR

Aux-in and Headphone Input:- 3.5mm (1/8-inch)

USB Port:- Micro B USB Port for Audio Stream and Software Updates

Dimensions:- 10.5cm x 11.5cm x 5.8cm

Weight:- 420g

Current Draw:- < 200mA

Power Supply (Not Included):- 9v DC Center Negative

Acoustic Centre offers free Australia-wide express shipping on all accessory orders (excluding bulky items including amplifiers and cases) over $50, and free express shipping with TNT tracking on all instruments, amplifiers and cases over $599. 

Occasionally due to issues with delivering to remote or unusual destinations, we aren't able to offer free postage, so we do reserve the right to retract the offer if freight costs exceed 15% of your purchase. We will always notify you if there is an issue and offer a full refund or arrange alternative delivery options.

All strings and accessories will be shipped using Australia Express Post with tracking. Other items including guitars and amplification equipment will be shipped using our courier service providers, with a tracking number and signature on delivery. Deliveries to most major capital cities are usually within 2 - 4 business days, and regional areas and WA deliveries are usually within 8 working days.

The Acoustic Centre ships goods Australia-wide, however at this time we are unable to accept international orders. Please contact us on (03) 9699 5691 to enquire about a special order. 

The Acoustic Centre is located at 206 Park St. South Melbourne, Victoria, Australia. We ship daily at 2pm (Monday to Friday) excluding Victorian public holidays. You are welcome to pick your order up instore, but we will require photo identification to ensure against fraud. If you require more info on shipping to your area, or have any questions regarding shipping, please contact us via or by phone on (03) 9699 5691.

Guitar players at every level have trusted Acoustic Centre for over 25 years. We combine our near fanatical attention to detail, experience and passion for all things guitar with exemplary customer service to bring you the ultimate guitar-buying experience. We personally inspect and professionally set up every instrument that arrives in store to ensure optimum playability. We know guitars inside and out, so you can buy with absolute confidence. 

At the Acoustic Centre, we are real people and real musicians who live and breathe music. We gig, rehearse, record and tour, and we are here to help you make an informed and unbiased decision on the right instrument for you.

Visit us at our store at 206 Park Street, Melbourne, Victoria.


We offer 3 Months INTEREST FREE on purchases under $1000, and 6 Months INTEREST FREE on purchases over $1000.

CLICK HERE for T&C's and Application form - it only takes a minute!

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