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Vox Valvetronix VT40X Classic Blue 40-watt 1 x 10-inch Combo Amplifier Certified Open Box , $359.99 - Add to Cart Skip to Product Information

Vox Valvetronix VT40X Classic Blue 40-watt 1 x 10-inch Combo Amplifier Certified Open Box

40W, 4-channel, 1 x 10" Hybrid Guitar Combo Amp with Valvetronix Preamp, VET+ Modeling, DSP FX, and USB Connectivity
Vox Valvetronix VT40X Classic Blue 40-watt 1 x 10-inch Combo Amplifier
Vox Valvetronix VT40X Classic Blue 40-watt 1 x 10-inch Combo Amplifier

Certified Open Box Savings!

Save $40 What is Certified Open Box?

The price below reflects your savings.

Savings: $40.00 New for $399.99

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Vox Valvetronix VT40X Classic Blue 40-watt 1 x 10-inch Combo Amplifier Certified Open Box

Certified Open Box Savings!

Save $40 What is Certified Open Box?

The price below reflects your savings.

Savings: $40.00 New for $399.99

The Legendary Valvetronix Returns — Sharper, Richer, and Bolder

This article was Written By

Our Product Research Team

Get to know them!

Loaded with a multistage 12AX7-driven preamp and advanced VET+ modeling, the Vox Valvetronix VT40X Classic Blue delivers authentic tube tone and a dynamic response that’s truly second to none. This 40-watt hybrid dynamo offers numerous updates from previous VT models, including a redesigned classic Vox split-front aesthetic with a blue grille, improved VET+ circuit-level modeling for lifelike amp behavior, and optimized DSP-to-tube balance for smoother clean-to-crunch transitions. Moreover, the tube-fueled design gives you natural compression and expressive dynamics. Add to that USB connectivity and Vox Tone Room software for deep tone editing, and you get a potent creative hub packed into a compact, gig-ready combo amplifier. Marking a promising revival of Vox’s legendary Valvetronix series, the VT40X Classic Blue melds enhanced tube integration, versatile tones from shimmering cleans to high-gain leads, and a bold visual style into an authoritative sonic powerhouse that leverages cutting-edge digital technology while paying homage to early-2000s Vox designs. Representing a sublime melding of authentic tube warmth and digital ingenuity, the VT40X Classic Blue reintroduces the Valvetronix line to a new generation of players in bold Vox fashion.

A modern evolution of Vox’s game-changing Valvetronix tone

Since their original unveiling in the early aughts, Vox’s Valvetronix amplifiers have been top sellers here at Sweetwater. Beyond that, the VT series, fueled by VET modeling and bolstered by a tube-fueled preamp, proved to be an absolute game changer. The VT40X Classic Blue retains everything players love about the previous VT models, including the revolutionary hybrid design, bass-reflex cabinet design, and seamless software integration, but leverages modern technology to deliver an even better playing experience. For starters, improved VET+ modeling offers outstanding tubelike dynamics and response, providing you with smoother, harmonically richer tones that deliver, in Vox’s own words, “undistorted within distortion” with crunch to light overdrive settings. Moreover, the VT40X Classic Blue’s optimized DSP-to-tube balance reinvigorates its tube drive, delivering a smoother transition between clean and crunch tones when you roll back your guitar’s Volume knob, as well as more expressive dynamics.

High-performance DSP delivers next-level sound quality

Powered by advanced DSP technology, the Valvetronix VT40X Classic Blue delivers exceptional processing power. You’ll hear the difference across its 20 authentic amp models and 13 studio-grade effects. Furthermore, with the ability to save up to 60 presets using Vox Tone Room software, you’ll have instant access to a veritable salmagundi of ear-grabbing, tube-driven tones, complete with a pedalboard’s worth of effects.

Dive deep with Vox Tone Room software

The Vox Valvetronix VT40X Classic Blue’s Tone Room editor/librarian software puts an enormous amount of customizing power at your fingertips. You can tweak parameters to such a degree that it’s almost like building your own instrument. When using Tone Room in conjunction with the VT40X Classic Blue, you gain access to a broad range of 20 realistic models of some of the most sought-after amplifiers around. Sixty preset programs, some modeled after the signature sounds of famous guitarists, unlock the full potential of this feature-laden hybrid combo amplifier. And since the VT40X Classic Blue features class-compliant USB connectivity, you get seamless integration with macOS, Windows, iOS, iPadOS, and Android devices.

Vox Valvetronix VT40X Classic Blue Features:

  • 40W hybrid combo amp offers a stellar update to Vox’s classic VT series
  • 12AX7-fueled Valvetronix preamp gives you natural compression and expressive dynamics
  • VET+ circuit-level modeling provides lifelike amp behavior
  • High-performance DSP delivers next-level sound quality
  • Optimized DSP-to-tube balance yields smoother clean-to-crunch transitions
  • Bass-reflex cabinet design delivers rich resonance
  • Vox Tone Room editor/librarian software for customizing amps and FX
  • 11 realistic amp models (20 when using the editor/librarian software)
  • 33 preset programs (60 when using the editor/librarian software)
  • 13 high-quality onboard FX
  • Redesigned classic Vox split-front aesthetic with a blue grille
What is Certified Open Box Gear?

At Sweetwater, we're so picky that what we call "Certified Open Box" is actually better than what most music retailers sell as "new" gear! Our gear hasn't endured hundreds of people a week plunking away at all the keyboards, fumbling through Stairway to Heaven on every guitar or playing with every fader and knob on a mixer or control surface.

Certified Open Box (also known as a demo) means we’ve had it out of the box for our YouTube channel, displayed at events, tested in our studio, or maybe it was in a customer’s hands for a few days and isn’t ‘factory fresh’ as a result. Every Certified Open Box item we sell has Sweetwater’s 2-year Total Confidence Coverage™ warranty and has been tested and verified up to ‘new’ specs by our factory-authorized technicians to make sure it’s in perfect working order before we ship it to you.

When you buy a Certified Open Box item at Sweetwater, you get:
  • 2-year Total Confidence Coverage Warranty™!
  • Products inspected and tested by our factory-authorized techs, guaranteed to function like new (or better)!
  • FREE shipping on most items
  • Equipment that will MEET or EXCEED your expectations!

Click HERE to browse our current inventory of Certified Open Box equipment. Purchasing Certified Open Box gear from Sweetwater is a smart and safe way to save!

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.