Mesa/Boogie MARK 1 specification

PENTODES: (Continued) stopping them. The influence of the plate takes over and - being solid metal and of the highest positive attraction - it is at this final destination that the electrons congregate.

Thus the proper cocktail waitress - visible through the louvers - is scantily clad so as to be all the more effective at reinforcing the attractive influence of her bar and by being located in between the door and the bar, she serves as bait to lure customers past the door’s negative influence. Once through the door however, it is the rare Irishman who actually comes in personal contact with the cocktail waitress as, for all intents and purposes, she - like the screen grid - turns out to be a vanishing illusion.Yet, having come this far, the solid influence of the bar itself now takes over and attracts the customers to congregate, having happily reached their destina- tion.

If you’re still following this and haven’t lost track of the count, you’ll know we’re still one element short of the five needed to make a Pentode. This last part is a pair of beam-confining shields which being negatively charged, serve to direct the flow right toward the plate. This is much the way a short entrance hall to the bar prevents wandering accidentally into the Men’s room on the way.

Once at the bar though, the circuit is complete and the process of soul-nourishing works its ritual magic. Biases having been overcome, illusory nightingales having vanished, the spirits truly soar and the once surly Irishmen now are filled with warmth, wit and kindred friendship, enjoying the music and glowing nicely with their heaters on.

With appreciative thanks to the inhabitants of the Land of the Leprechaun, we have now concluded our little diversion into the mechanics of proper bar lay-out.

A feature article by Randall Smith

Designer / President

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MARK 1 specifications

The Mesa/Boogie MARK 1 is an iconic guitar amplifier that has significantly influenced the world of music since its introduction in the late 1960s. Designed by Randall Smith, the MARK 1 was one of the earliest examples of a high-gain, boutique-style amplifier, aimed at offering guitarists a versatile tool for achieving rich tones across various genres.

One of the standout features of the MARK 1 is its innovative preamp design, which utilizes multiple gain stages to produce a wide range of tonal options. This allows players to achieve everything from sparkling clean sounds to aggressive, saturated overdrive. The two-channel configuration—clean and lead—enables users to switch effortlessly between different sounds, making it a favorite among performers looking for adaptability in their rig.

The MARK 1 is also equipped with a powerful EQ section, featuring a 5-band graphic equalizer that grants further control over tonal shaping. This level of customization is rare in amplifiers of its time, allowing musicians to tailor their sound to perfection, whether in the studio or on stage. The “Fat” switch adds additional low-end response and gain, enhancing the amp's overall character and making it suitable for heavier genres.

Another hallmark of the MARK 1 is its compact design, which was revolutionary at the time. Weighing significantly less than traditional tube amplifiers, the MARK 1 was constructed with portability in mind, making it easy for gigging musicians to transport. This combination of power and portability made the MARK 1 a popular choice for artists across various genres, from rock to blues and jazz.

The MARK 1, like many of Mesa/Boogie’s offerings, is built with high-quality components, ensuring durability and reliability. The use of premium tubes in the power section contributes to its dynamic response and harmonic richness, vital for expressive playing.

Overall, the Mesa/Boogie MARK 1 is more than just an amplifier; it's a landmark in guitar amplification technology. With its versatility, compactness, and powerful tone-shaping capabilities, the MARK 1 paved the way for future amplifiers and continues to be revered by musicians around the world for its outstanding performance and timeless sound. Whether performing live or recording in the studio, the MARK 1 remains a trusted companion for guitarists seeking to explore the full spectrum of their musical expression.