BOSS WAZA Tube Amp Expander Core Reactive Load Box

Advanced Creative Tools for Studio-Grade Tube Amp Tones

The WAZA Tube Amp Expander Core is a professional recording solution for capturing tube amp tones with exceptional quality. BOSS' Tube Logic approach and reactive load design retain your amp’s natural feel and touch response, while premium cab emulation and studio processing make it simple to craft high-impact direct sounds. Creative options include a helpful Mix Assist tool that ensures tracks fit perfectly within every mix, plus a unique Air Feel feature that authentically recreates “amp-in-room” sound with advanced spatial technology. And with the integrated 30-watt reactive drive power amp and your favorite cab, you can enjoy “sweet spot” amp tones at home-friendly levels.

FEATURES

• Professional direct tube amp recording solution driven by the advanced Tube Logic design philosophy
• Selectable reactive load retains your amp’s natural feel and interactive response
• Supports most tube amps rated up to 100 watts*
• Built-in 30-watt reactive drive power amplifier with continuous volume control
• Mix Assist function optimizes the recorded sound to dramatically improve production quality
• Air Feel feature recreates “amp-in-room” sound with natural depth, dimension, and ambience
• Choose from 22 BOSS cabinet emulations and five selectable mic types (two simultaneously)
• 64 user IR slots supporting mono/stereo WAV files up to 500 ms and 32-bit floating point/96 kHz resolution
• Comes preloaded with 10 Celestion® Digital IRs
• Use up to two third-party IRs simultaneously and smooth the sound with onboard time alignment tools
• Premium stereo effects, including compression, parametric/graphic EQ, delay, and reverb
• Ten recallable rig settings for storing favorite setups
• External effect loop with selectable series/parallel operation
• Balanced XLR stereo line outputs for connecting to mixers and recording devices
• USB-C® for audio recording and playback with computers and mobile devices**
• Headphones output for quiet practice with cranked-up amp tones and immersive Air Feel ambience
• Speaker output for connecting an external cabinet (supports 4 ohms and higher)
• MIDI input for advanced control
• Dedicated WAZA Tube Amp Expander Core Editor (macOS/Windows) for editing and IR loading
• Optional Bluetooth® Audio MIDI Dual Adaptor (BT-DUAL) enables wireless audio streaming from music apps and remote editing/IR loading with the mobile version of the WAZA Tube Amp Expander Core Editor (iOS/Android)

*Mesa Boogie Dual and Triple Rectifier amplifiers are not supported.

**Compatibility with all third-party devices and software is not guaranteed.

***IR loading via the Android app will be supported in a forhcoming update.

HIGHLIGHTS

Supreme Tube Tones at Any Volume

A tube-based guitar amp sounds and feels its best when the volume is cranked and its power section is really working. Unfortunately, the levels produced are usually unmanageable for anyone without an isolation booth or very forgiving neighbors.

The WAZA Tube Amp Expander Core solves this issue, capturing your amp’s speaker output with a reactive load and selectable options that accurately emulate combo and stack-style speaker behaviors. The sound goes directly to the internal 30-watt reactive drive power amp, ready to connect to an external cab for low-volume practice. The same signal is also sent through the unit’s speaker cab emulations and effects processing, giving you a polished feed for direct recording applications.

Premium Speaker Sounds

The companion editor software provides a studio playground for shaping the raw amp sound within the WAZA Tube Amp Expander Core. Choose from 22 BOSS cabinet emulations and five classic mic types (two available simultaneously) and dial in the ideal blend with position, distance, and level controls. Alternatively, it’s possible to use up to two speaker cab IRs at once, either from the included Celestion Digital IRs or selections from your personal IR library. With the time alignment function, you can precisely line up IR combinations for the smoothest tone.

Professional Recording Tools

The WAZA Tube Amp Expander Core contains powerful tools to help you achieve world-class recorded tones—with no engineering experience required. Developed with top guitarists and studio engineers, the Mix Assist function lets you apply one of three sound contour curves with variable transient control. This makes it easy to record parts that blend perfectly within mixes, drastically improving your production quality. There’s also an immersive Air Feel feature that uses BOSS spatial technology to recreate the inspiring “amp-in-room” tone that guitarists love. The two Air Feel studio variations deliver realistic richness, depth, and dimension, providing more natural results than the room mics typically used to add space to guitar recordings.

Effects and Rigs

Effect processing plays a vital role in crafting great studio guitar tones. The WAZA Tube Amp Expander Core features a series/parallel loop for inserting your preferred mod and ambience effects, positioned after the amp’s distortion for the clearest sound. There’s also an array of high-quality internal processing, allowing you to apply compression, EQ, delay, and reverb within the unit. You can organize custom setups within the editor—including cab choices and effects—and assign 10 favorites for instant access with the Rig knob on the front panel.

Versatile Connections

The WAZA Tube Amp Expander Core enables you to use your custom rigs in many ways at once. Record directly to music production software over USB or patch into a mixer or audio interface with the stereo XLR jacks. Hook up an external speaker cabinet (4/8/16 ohms) for daily practice. Or monitor through headphones via the front input, complete with Air Feel for an inspiring spatial experience.

Expansion Options

Using the WAZA Tube Amp Expander Core Editor, you can load 64 of your favorite third-party speaker WAV IRs in addition to the 10 included Celestion Digital IRs. Mono or stereo files are compatible, with support for 500 ms length and 32-bit floating point/96 kHz resolution for the finest audio quality. The optional Bluetooth® Audio MIDI Dual Adaptor adds wireless capabilities, allowing you to jam with music streamed from a smartphone and use the mobile version of the editor to tweak rigs and load IRs.

SPECIFICATIONS

Maximum Input Power

• FROM TUBE AMP: 100 W

Safety Load (power off)

• FROM TUBE AMP: 330 ohms

Rated Power Output

• TO SPEAKER: 30 W (8 ohms)

Load Impedance

• TO SPEAKER: 4-16 ohms

Input Impedance

• FROM TUBE AMP: 8 ohms
• FX LOOP RETURN: 1 M ohm

Output Impedance

• LINE OUT L/R: 600 ohms
• FX LOOP SEND: 1 k ohm

Nominal Output Level

• LINE OUT L/R: +4 dBu

FX LOOP Nominal Input/Output Level

• -10/+4 dBu (selectable)

Maximum Output Level

• LINE OUT L/R: +13 dBu
• FX LOOP SEND: +6 dBu (-10) /+20 dBu (+4)

Controls

• POWER switch
• SPEAKER OUT knob
• LINE OUT knob
• PHONES knob
• REACTIVE LOAD knob
• RIG knob
• AIR FEEL LEVEL knob
• WRITE button
• INPUT LEVEL switch
• FX LOOP LEVEL switch
• GND LIFT switch

Indicators

• POWER
• WRITE
• INPUT SIG/PEAK

Connectors

• FROM TUBE AMP jack: 1/4-inch phone type
• TO SPEAKER jack: 1/4-inch phone type
• LINE OUT L/R connectors: XLR type
• PHONES jack: Stereo 1/4-inch phone type
• FX LOOP SEND jack: 1/4-inch phone type
• FX LOOP RETURN jack: 1/4-inch phone type
• USB port: USB Type-C®
• MIDI IN connector
• Bluetooth® adaptor connector: Dedicated connector
• DC IN jack

Power Supply

• AC adaptor

Current Draw

• 470 mA

Accessories

• Owner's manual
• AC adaptor
• Power cord

Options (sold separately)

• Bluetooth® Audio MIDI Dual Adaptor (Model: BT-DUAL)
• Wireless MIDI Expression Pedal: EV-1-WL
• Wireless Foot Switch: FS-1-WL
• Carring Bag: CB-VE22

Size and Weight

• Width: 200 mm / 7-7/8 inches
• Depth: 202 mm / 8 inches
• Height (including foots): 99 mm / 3-15/16 inches
• Weight: 2.2 kg / 4 lbs 14 oz

* 0 dBu = 0.775 Vrms

*The specifications are subject to change without notice.

Returns

• Any New item (other than as noted below) purchased from Bananas at Large may be returned within 14 days of the invoice date, for a full refund, exchange or credit.
• All Pre-Owned products may be returned in 48 hours.
• All Clearance, “additional mark down”, additionally discounted, “blow out”, “door buster” or otherwise identified as on sale may be returned within 7 days unless otherwise specified.

For online orders, the above return policy begins on the day the items were delivered. We must receive an active tracking number within the specified time.

Bananas must be notified within 24 hours of receiving delivery of any issues that pertain to damage during shipping, missing product or incorrect product.

See our full Return Policy for all of the pertinent details.

Shipping

We understand that when you make an order, you want your gear as quickly as possible and we'll do our best to make that happen! Most of the items we sell will ship quickly and be at your door fast. In most cases, orders ship within 1-3 business days. Shipping and delivery dates are not guaranteed unless otherwise specified. 

Most orders $100 and over qualify for FREE shipping within the Continental United States. Some exclusions may apply.

Ensure Secure Deliveries with Signature Confirmation

Want more security? Request Signature Required for your online order. This service is available upon request. We apply Signature Required on all online orders over $200. Please submit in writing if for any reason you do not want this additional service. Your request must be emailed to us prior to shipping, [email protected].

• Service available upon request.
• Signature Required applied to all online orders over $200.
• Limited availability to APO/FPO/DPO locations and certain Freely Associated States.
• Use with any service except Standard Mail® and Adult Signature Services.

See our full Shipping Policy for further details.

Buy online, pick up in store

Order online and pick up at any store location FREE of charge. Avoid online shipping charges and shipping time, and in most cases get your order faster. Enjoy the in store pickup convenience and security of knowing that your can easily return the product if it does not suit your needs within our return policy.

I'm interested! What do I need to do?

1. Place your order on shopbananasatlarge.com and choose In-Store Pickup for your preferred location at checkout.
2. We'll contact you by email or phone when it's ready for pick up. Need it sooner? Just give us a call and we'll do our best to arrange that: 888-900-1959
3. Bring a copy of your valid government-issued ID such as a Driver's License and a digital or print copy of the order confirmation to your local store.
4. You have (2 options): Curbside Contactless Pickup or Pick up in Store.
   1. Curbside Contactless Pickup: When you arrive at the store location, call us and we will bring your order out to verify your ID, place in your vehicle and you're ready to go!
   2. Pick up In Store: Come into the store, show your ID, and pick up your order.

How does it work?

After you place your order online, the selected store receives your order. Then the merchandise is selected from the store's current inventory and prepared for pick up. If the items are located at another store, there may be a longer wait time as we need to transfer it to the pickup location of your choice. This is all part of our free service. We'll contact you when it's ready and notify you if anything changes. Once your order is ready, you can choose to come into the store to pick up your order OR call us when you arrive and we will provide Contactless Curbside Pickup at your vehicle.

Most orders are ready within 24 hours; however, please allow for extra processing time depending on the item, size of order, and store location. If you need to pick up your order sooner, please give us a call at either location.

See our full Shipping Policy for further details.

Local delivery to your doorstep

Bananas is here to help you support your local economy, shop local, get your musical dreams faster.

FAST: Get Same Day Delivery starting at $35*.

Making your online shopping a little easier. We offer an easy “Order Online, Deliver to your Doorstep”.

This service is currently available for these towns within California: Santa Rosa, San Rafael, San Anselmo, Fairfax, Larkspur, Greenbrae, Corte Madera, Novato, Sausalito, Belvedere/Tiburon, Ross, Kentfield, and Mill Valley. Shipping rates are shown at checkout. Got questions?... Contact us!

*Get same day delivery for in-stock orders received and processed by 2pm, otherwise will deliver the following business day. Delivery fee is based on weight, delivery location and courier fees. Any amounts over $35 - You will be notified to approve before delivery. This is a convenience option only. Deliveries are by a 3rd party delivery service and will deliver to doorstep only. By accepting this delivery process you hereby indemnify Bananas At Large Inc of all responsibility as Bananas At Large is not the delivery agent and assumes no liability on lost or stolen products.

By choosing this option you understand and agree to the following terms:

• Some restrictions apply. For in-stock & available items only.
• You are requesting Bananas at Large to contract on your behalf with a 3rd party service.
• Bananas At Large guarantees the product to be delivered to your doorstep, with photo proof of delivery.
• Bananas cannot and is not responsible for the package safety or security once it is delivered to your doorstep.
• You understand and accept the risk and responsibility of your package once it is delivered.
• Large items, overweight items may incur additional charges.
• Certain delivery zones and homes with access issues may incur additional charges or may not qualify for delivery.
• If the last inventory unit is located at either our Santa Rosa or San Rafael store locations, there may be a delivery delay that may take an additional business day to have it transferred to the store closest to you.

FREE: Free Local Delivery in 1-3 Days.

Free 1-3 day local delivery available for orders over $199*. Contact us for details.

If you aren’t in a rush to receive your items and want free delivery, choose the Free Local Delivery option at checkout. Your order will be processed and delivered within 2-3 business days. 

*Applies to full price items only. Can't be combined with any other deals or promotions including Bananas Rewards.

This service is currently available for these towns within California: Santa Rosa, San Rafael, San Anselmo, Fairfax, Larkspur, Greenbrae, Corte Madera, Novato, Sausalito, Belvedere/Tiburon, Ross, Kentfield, and Mill Valley. Shipping rates are shown at checkout. Got questions?... Contact us!

By choosing this option you understand and agree to the following terms:

• Some restrictions apply. For in-stock & available items only.
• You are requesting Bananas at Large to contract on your behalf with a 3rd party service.
• Bananas At Large guarantees the product to be delivered to your doorstep, with photo proof of delivery.
• Bananas cannot and is not responsible for the package safety or security once it is delivered to your doorstep.
• You understand and accept the risk and responsibility of your package once it is delivered.
• Large items, overweight items may incur additional charges.
• Certain delivery zones and homes with access issues may incur additional charges or may not qualify for delivery.
• If the last inventory unit is located at either our Santa Rosa or San Rafael store locations, there may be a delivery delay that may take an additional business day to have it transferred to the store closest to you.

See our full Shipping Policy for further details.

Local pickup only

Some products are available for local pickup only. If you’d like this item shipped, please call us at 1 (888) 900-1959 or text us at (415) 457-7600 to discuss shipping options. 

Shipping items with tubes

Bananas does not warranty tubes in transit. We offer tube removal and individual bubble wrap service for $45 per customer request (for standard amps, more complex amps that take more time may be a higher fee). Customers buying any tube product and having it shipped should understand and realize that Bananas cannot be responsible for damaged tubes from transit. This applies to all new and used products. Certain manufactures offer a tube warranty on their new products as a courtesy, and that is available thru the manufacturer warranty process for all new products where it applies.

Play now, Pay later!

Make music more affordable with these easy payment plans. It only takes a few minutes to apply or just choose any financing option at checkout.

Bananas at Large offers these financing options: Affirm, PayTomorrow, Acima Credit, Synchrony and more! 

Click here for details.

Warranty Information

PROTECT YOUR PRODUCT WITH AN EXTENDED WARRANTY

• Full Coverage from Date of Purchase
• 100% Parts and Labor Coverage
• Includes Accidental Damage
• Includes Free Shipping
• Up to 5 Years of Total Coverage

Bananas has partnered with Consumer Priority Service (CPS) to offer extended warranties for your instruments. Simply add the CPS extended warranty by selecting the option on our product pages.

Warranty FAQ

DO I NEED AN EXTENDED WARRANTY?

Most manufacturers limit their warranty periods to keep their product costs competitive. It should come as no surprise that most problems occur after the manufacturer’s warranty is over. If you are like most consumers, you don't want to deal with the inevitable problems surrounding repairs. Who do you call for service? Are they reliable? Is a handyman capable of performing a long lasting, reliable repair on your instrument?

Ranked #1 Extended Warranty

CPS provides top notch warranty protection for your purchases to ensure life and longevity. This means that they care about you and your product long after your purchase has been made. This warranty offers reliable, hassle-free, comprehensive parts and labor protection for your product.

You Need to Prepare for These Issues Today

Bananas is an Authorized Consumer Priority Service Dealer. This means that they care about you and your products long after the purchase date. You can easily extend your manufacturer's warranty for a possible total of 5 years from the date of purchase.

CPS Warranties Offer Reliable Protection for Your Product

By purchasing a CPS accidental damage plan, you’re guaranteed years of worry free operation from your new product.

Is a CPS Warranty just an extension of the existing manufacturer’s warranty?

Actually, it’s an upgrade to your existing manufacturer’s warranty. A CPS Warranty offers benefits that aren’t offered by manufacturers like accidental damage & free shipping to and from the repair facility.

What’s the difference between a Replacement Plan and Repair Plan?

A Replacement Plan is available for products under $150. If the product fails, you will receive a replacement through Bananas.

A Repair Plan is for products over $150 and offers free repair coverage for your product any time during the life of your warranty. If we can’t fix it, we’ll replace it!

How am I covered?

For the Replacement Plan, your coverage provides for a one-time replacement of the covered product.

For the Repair Plan, you are covered for a period of up to five years (depending on which plan you purchase). Benefits include parts and labor for required repairs on your product.

When does my warranty coverage start?

Coverage begins on the 31st calendar day from when you purchased your product.

Can I transfer the Protection Plan to a new owner?

Yes! CPS Warranties are transferable between owners.

What if I Need to Return my Product?

If you return your product, Bananas returns the money you paid for the product protection plan. Depending on how much time has passed since your purchase, CPS may issue a prorated refund.

Is my product covered if it’s stolen or if I lose it?

Unfortunately the CPS Warranty does not cover lost or stolen products.

Is there a service fee?

Zero dollar service fee for the Replacement Plans and the Repair Plans.

HOW DO I FILE A CLAIM?

https://www.cpscentral.com/how-to-file-a-claim