Overview

Express 550 Plus Front Panel

Express 550 Plus Rear Panel

With uniquely inspiring Tone, the Express Plus 5:50™ has become one of our most popular amplifiers. All-Tube and hand-built in our only shop in Petaluma, CA, the Express Plus 5:50 offers genre-defining sounds, near-limitless versatility, and unbeatable value that others can only imitate. The Express Plus 5:50 features several exciting features that take it even closer to the flagship status of our award-winning MARK FIVE®.

Express 5:25+ 1x12 in Premier Bubinga Hardwood and Wicker Cane Grille.
Express 5:25+ 1x12 in Premier Bubinga Hardwood and Wicker Cane Grille.
Express 550 Channels and Muti Watt Power Switching
Patented Multi-Watt™ Channel Assignable power switching feature allows you to run the output tubes in your choice of three different wattage ratings per Channel- 5, 25 or 50 Watts.
Express 550 EQ
Our time-honored 5 Band Graphic Equalizer! The sliders are added in addition to the original Channel Assignable PRESET contour controls. Choose whether you want to use the Sliders or the PRESET in each Channel with the EQ Assign mini toggle.

Both Express Plus™ models use the same super versatile, tone-packed preamp featuring two fully independent Channels, each of which contain two style enhanced modes to choose from when creating your footswitching preferences. Channel 1 hosts the blooming low-gain sweetness of CLEAN or the snarling mid-gain percussiveness of CRUNCH and covers the rhythm territories.

Channel 2 offers a different face to mid-gain with the howling honesty of BLUES or a high-gain adventure through the searing layers of molten harmonics in BURN. Together these two inspiring modes invite years of solo exploration.

MULTI-WATT POWER AND OUR FAMOUS 5-BAND GRAPHIC EQ

Both Express Plus models, the bouncy 25 watt 5:25 with its 2xEL84 9-pin power tubes and the bolder 50 watt 5:50 running 2x6L6 octal-base pentodes, now feature our patented Multi-Watt™ Channel Assignable power switching. This valuable feature allows you to run the output tubes in your choice of three different wattage ratings per Channel – very cool right?

All Mesa® amplifiers are hand built in our one and only Petaluma, California USA shop.
All Mesa® amplifiers are hand built in our one and only Petaluma, California USA shop.

But what’s amazing is this – each power mode has it’s own tone-spawning operating class and wiring configuration! Choose the full power mode of 50 watts in the Express Plus 5:50 for Class AB running in a Push-Pull configuration for punch, authority and headroom. Or, kick down to 25 watts for Class A Pentode and a more silky, vintage voice with enhanced clip potential. And for the ultimate in low wattage power, knock it down to the 5 watt mode… now you’re running one tube in Class A Triode wired in a Single-Ended configuration.

Obviously we were thankful the patent office saw the possibilities and rewarded our efforts with a patent, but what excites us is the look on players faces when they hear and feel this power section magic for the first time.

RICH ALL-TUBE REVERB ENHANCES THE SPATIAL QUALITY OF YOUR EXPRESS PLUS

Our rich All-Tube REVERB enhances the spatial quality of your Express Plus 5:50 and each Channel provides an independent Reverb Mix control so you can get the perfect blend of this beautiful effect for each of your footswitchable sounds. The Reverb effect can be triggered on and off via the included Footswitch.

The Express 5:50 features a dramatic enhancement in the EQ department with the inclusion of our time-honored 5 Band Graphic Equalizer! The sliders are added in addition to the original Channel Assignable PRESET contour controls and you can now choose whether you want to use the Sliders or the PRESET in each Channel with the EQ Assign mini toggle. The EQ, whether set to call up the Sliders or the PRESET controls, is also footswitchable and can be called up at any time via the Express Plus Footswitch.

Outboard Processing is handled by the series EFFECTS LOOP, keeping patching to a minimum and protecting tonal integrity a priority. The Express Plus amplifiers are compatible with most good quality processors and using this feature for all of your rack-type effects will produce gratifying results. Select a format below for complete technical specifications.

FORMATs AVAILABLE

  • Head (Width 22 7/8”)
  • 1x12 Combo (Width 22 7/8”)

Videos

Official Demo Video

Ch. 2 BURN – Modern Rock

Ch. 1 CLEAN – Sparkling Tele

Ch. 2 BURN – Metal

Ch. 1 CRUNCH – Rock

Ch. 1 CLEAN – Jazz

Ch. 2 BURN – Single Note Solo

Ch. 2 BLUES – Overdrive

Reviews

  • "These combos will successfully bridge the gaps between practicing at home, playing on stage and recording in the studio, whether you play country, blues, rock or metal. For ease of use, versatility and tonal range, and pound-for-pound value for money, the Express 5:25 and 5:50 are hard to fault.”

    David Greeves
    Guitar Buyer
  • "Just about every great Mesa/Boogie tone (and then some) lurks inside this compact powerhouse. Channel 1’s Clean mode combined with the luscious Accutronics spring reverb produces one of the best clean tones I’ve heard from a Mesa, with a fat roundness and three-dimensional clarity that rivals a vintage Twin Reverb.”

    Chris Gill
    Guitar World
  • "The Express 5:50 speaks in a variety of voices and sounds great doing it. The low-powered, old school tones were extremely convincing and the A/B full-powered gain sounds were huge. You could spend hours dialing in variations, yet the amp still feels simple and thoughtfully designed. Its variable power makes it perfect for home recording situations, but the amp will shine in studio and live applications as well. If you want to cover a lot of ground with speed, ease and quality tone, this is a winner.”

    Brett Petrusek
    Premier Guitar
  • "The Express 5:25 Plus and 5:50 Plus amps add even more to the already exceptional feature set and tones of the original Express Series. All of these improvements make the new Express Plus not only the best value in the amplifier world, but also guarantee an express ride to Tone & Inspiration!”

    www.guitarnoize.com
    www.guitarnoize.com

Available Formats