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Vox VT20X Valvetronix 20W 8" Hybrid Modelling Combo Amplifier (Classic Blue)

9% off
Vox  |  SKU: VT20X-CLBL

Why The VT20X Classic Blue Is Not Just A Standard Modelling Amp

Most modelling amps work in a single domain: they use digital signal processing to emulate a target amp's tone as accurately as the algorithm can manage, and the output from that algorithm goes straight to a solid-state power amp. The result can be accurate and versatile, but it typically lacks the organic, touch-sensitive quality that makes a real tube amp respond differently to how hard or softly you play.

The Valvetronix VT20X sits in a different category entirely because it is not a pure digital amp — it is a hybrid. A genuine 12AX7 preamp tube is actively integrated into the signal path, not merely bolted on as a cosmetic addition. It provides the compression, sag, harmonic richness, and volume-knob responsiveness that no DSP algorithm fully replicates, because those qualities emerge from the actual physical behaviour of the tube under different signal conditions. The VET+ engine runs alongside that tube stage, modelling 11 amp characters — from clean Deluxe and Tweed to AC30, British heads, and high-gain modern sounds — at the circuit component level rather than just the tonal output level. The Classic Blue edition launched at NAMM 2026 brings a refined integration between the tube stage and the DSP, a visual identity that calls back to early-2000s Valvetronix designs, and the upgraded VET+ algorithm developed from VOX's research into their hand-wired AC HWR series. For players who want modelling flexibility and tube feel in a single compact amp, the VT20X Classic Blue makes a compelling argument.

Vox - Iconic British Brand

Vox has been creating legendary British audio equipment for over 60 years and is used by iconic musicians worldwide, from U2, The Eagles, to Paul McCartney, who proudly use Vox amps and effect pedals.

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Vox amplifiers and guitar effect pedals
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Expert Advice, Click for Help

Need help? Call us on: 02476 369897

Use Live Chat or e-mail us directly at: sales@audiodirect.co.uk

OPEN: Mon to Fri - 9am to 5pm (Closed Sat/Sun)

We are more than online retailers, our sales staff have a passion for making music and give honest frank feedback on their experience with your chosen product. Call us for a chat or read all about us HERE>

FREE Delivery & Easy Returns Info

DELIVERY

FREE Mainland UK Shipping for orders over £99 (Standard Service 2-3 days)

£3.99 per order for orders below £99. (Standard Service 2-3 days)

FAST Delivery Needed? We got you! find express delivery options at checkout or read our: Comprehensive delivery information HERE>

EASY RETURNS

Not completely happy with your audio gear? No problem! simply return it back to us for a full refund within 60 days of purchase.

Find comprehensive return T/C instructions HERE>

Why buy your VOX product from us?
  • Official VOX retailers, one of the largest in the UK!
  • Est. in 2001, 25 years of 5-star reviews
  • Expert advice, before & after your purchase
  • Manufacturer warranties you can rely on
  • Price match promise, never knowingly beaten on price
  • Confidence at checkout. 100% Secure shopping
  • FREE UK delivery on purchases over £99.00
  • Fast next-day delivery, trustworthy delivery partners & secure packaging
  • Quick & easy 60 days returns

We are more than online retailers. We have a passion for playing, making, and recording music. We only sell VOX products that we would be happy to use and that you can rely upon.

Read All About Us HERE>

Description

Classic Vox Sound And Iconic Vox Looks In The Most Accessible Format — The Pathfinder 10, 10W, 6.5" Bulldog, Clean And Overdrive

The Vox VT20X Classic Blue is a 20W hybrid modelling guitar combo amplifier, part of the 25th anniversary Valvetronix Classic Blue series announced at NAMM 2026. It combines a genuine 12AX7 tube in the preamp stage with VOX's updated VET+ (Virtual Element Technology) digital modelling engine, delivering 11 amp models onboard — expandable to 20 using the free VOX Tone Room editor software. The 12AX7's role in the VT20X Classic Blue has been expanded from earlier Valvetronix generations, giving it a more significant influence over the amp's compression, warmth, and dynamic response, and producing a closer interaction between the tube's analogue behaviour and the DSP modelling layer than previous VTX models achieved.

Advanced Amp Engine

The VET+ engine models amp behaviour at the circuit component level rather than taking a snapshot of a target amp's tonal output, allowing the simulation to reproduce how the amp's character changes under different playing conditions — gain structure, bias, Class A versus Class AB operation, and the way the power section reacts to the output from the preamp. The result is that rolling back the guitar's volume, picking harder or softer, or playing with different attack all produce proportionally different responses in the modelled sound, in the same way they would with a real valve amplifier. The 8" speaker sits in a tightly sealed cabinet with VOX's proprietary bass-reflex design for controlled, extended low-frequency depth.

Built-In Functionality

Built-in effects include two simultaneous pedal effects from four types each (Comp, Chorus, Overdrive, Distortion / Flanger, Phaser, Tremolo, Delay), four reverb types (Room, Spring, Hall, Plate), and noise reduction. 33 onboard programs are expandable to 60 via Tone Room. A USB port connects to Tone Room on Mac, Windows, iOS, and Android for deep preset editing and backup. An AUX input accepts external audio sources for play-along practice. A headphone output allows silent playing. A built-in tuner is accessible from the front panel. The Classic Blue finish uses a split-front cabinet design with blue grille cloth, reviving the early-2000s Valvetronix aesthetic.

KEY FEATURES: Vox VT20X Valvetronix 20W 8" Hybrid Modelling Combo Amplifier (Classic Blue)
  • Genuine 12AX7 Tube Preamp: Actively integrated for authentic tube compression, sag, and dynamics.
  • VET+ Modelling Engine: Circuit-level amp modelling for lifelike touch sensitivity and dynamic response.
  • 11 Amp Models Onboard: 20 via VOX Tone Room software.
  • Includes: VOX AC30, BRIT 800, TWEED 4x10, DOUBLE REC, BOUTIQUE METAL, and more.
  • Built-In Effects: 2 simultaneous pedal FX (8 types), 4 reverb types, noise reduction.
  • 33 Programs Onboard: 60 via VOX Tone Room.
  • USB Connectivity: VOX Tone Room editor for Mac, Windows, iOS, Android.
  • Built-In Tuner.
  • AUX Input: For play-along practice from external devices.
  • Headphone Output: Silent practice.
  • 8" Speaker, Sealed Bass-Reflex Cabinet.
  • Classic Blue Finish: Split-front cabinet, vintage-inspired blue grille cloth.
  • 20W RMS.

Specification
  • Power: 20W RMS @ 5 ohms
  • Speaker: 1 x 8"
  • Circuitry: Hybrid (12AX7 tube preamp + solid-state power amp)
  • Tube: 12AX7 (x1)
  • Modelling: VET+ (Virtual Element Technology)
  • Amp Models: 11 onboard (20 via Tone Room)
  • Effects: Pedal 1: 4 types (COMP, CHORUS, OVERDRIVE, DISTORTION); Pedal 2: 4 types (FLANGER, PHASER, TREMOLO, DELAY); Reverb: 4 types (ROOM, SPRING, HALL, PLATE); Noise Reduction
  • Programs: 33 onboard (60 via Tone Room)
  • USB: USB Mini-B (Tone Room connectivity)
  • AUX Input: 3.5mm stereo
  • Headphone Output: 3.5mm
  • Tuner: Built-in
  • Cabinet: Sealed, proprietary bass-reflex design
  • Finish: Classic Blue, split-front, blue grille cloth
  • Dimensions: 390 x 430 x 220mm)
  • Weight: 7.3kg

What's in the box?
  • Vox VT20X Classic Blue Combo Amplifier
  • IEC mains lead

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Need help? Call us on: 02476 36 98 97

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