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MegaTone MASCO MA35 Girthmaster Amp Head - Used  From Other

Local Builder MegaTone's Girthmaster Circuit in an old MASCO Amp Head!

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What We Think

Condition: Used, Very Good

 

Manufacturer's Description from Other

The Girthmaster guitar amp circuit was developed back in 2013 with several design objectives. I wanted to create a wide gain structure with a short signal path, which means using only a couple of gain stages before the phase inverter. Less gain stages translates into more dynamic range, that allows you to crank up the amp and have a full range of clean tones available by controlling pick attack and your volume control on the guitar.

It was important to be able to pour this circuit into a wide variety of great old public address amps, that often support only a few preamp tubes and have only a limited number of controls to work with. The circuit also had to be very flexible so it could be used with a wide variety of odd and old style tubes.

The Girth control is a key part of what makes this design work so well. Right after the first preamp stage, is the typical volume control that we label as gain. The girth control is another volume like control located after the 2nd preamp stage. By having these two controls, you can set the amp up over a much wider range.

At first, most were built into models that are commonly referred to as lunch-box sized amps, because of their small compact size. The small amps I refer to would typically have a pair of 6V6 or EL84 power tubesm making from 10 to 20 watts depending on the transformers and power supply.

With some minor modifications I adapted the girthmaster idea to fit into larger amps that might have a pair, or two pairs of 6L6 tubes, to produce from 30 to 80 watts of power.

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About Manufacturer

Here at Sound Pure we hand-select used and vintage pieces of gear for our inventory. Our used selection always reflects the high standards of quality and craftsmanship that we expect from all of our manufacturers.   We are a small team of dedicated experts, located in Durham, NC.  We buy, trade, and consign instruments that we truly believe in.  Because of this, we have developed a reputation of quality and trust with our customers, located all over the world.   Our best customers are the ones that truly understand our personal touch and commitment to everything we sell, and range from hobbyists and enthusiasts to some of the biggest names in the business.  Our passion bridges the products we love with the real relationships we develop with our customer - whether they are a lifelong musician, or they are just getting started on their musical journey but care about value, quality, and being treated right.  

We vigorously test everything we take in to ensure authenticity, functionality, and reliability.  We are supported by one of the most well-respected luthiers in the Southeast, guaranteeing products that come in are thoroughly vetted, and that products that go out our in premium, performance- ready shape.   We are so confident in our ability to provide the highest quality music equipment in the industry, we even invented our “Try Before You Buy” program where we can ship out a product before collecting actual payment. 

Sound Pure's inventory is constantly changing, ever-evolving, with some items sold before reaching the website.    Looking for something specific? Have questions about this product's condition or history?  Want more photos, or to simply chat with an expert who's had his hands on this actual piece of gear?  It is truly our pleasure to talk with our customers, please do contact us now.  

Specifications

Modified MASCO MA35

Year: 2015

Power Supply: Solid State

Preamp Tubes: 12AX7, 7F7

Vibrato: 7F7

Phase Inverter: 12AX7

Power Tubes: Dual 6L6GC

Front Panel: Input Jack, Girth, Bass, Middle with Pull Boost Switch, Treble, Master Volume, A-A/B Power Tube Bias Switch, Power Switch with Middle Standby

Wattage: A Switch - 22 Watts, AB Switch - 30 Watts

Back Panel: Dual Speaker Jacks, 4-8-16 ohm load terminals, cabinet voiced D/I jack, Gibson Style Vibrato with Depth and Frequency controls, remote jacks for mid boost and effects control