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The Ultimate GA15 Mod Kit

49.9559.95

To bring out the full potential of your little Harley Benton GA15 guitar amplifier, we’ve gone to great lengths to improve its mediocre design from the ground up. The resulting mods (described in more detail here) convert the little Harley from a dull 50% solid-state amp into a pure tube amp with a full, warm sound and great playing dynamics. Hum is greatly reduced. With a suitable extension speaker it gets enough power to play in a rock band!
The mod kit itself is comprised of a carefully selected set of electronic parts for implementing the mods. It also comes with a 27-page full-colour instruction manual, but to reduce costs, you might want to choose to just consult the online version, rather than ordering a printout.
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Description

This mod kit is comprised of a carefully selected set of electronic parts for implementing the “Ultimate Harley Benton GA15 Mod”, developed by Cosmic Ampworks. The printed 27-page full-colour manual is optional (view it online here).

Despite its charming looks, the little GA15 in its stock condition just doesn’t bring out the best in a guitar. The good news is however that it already contains all the basic ingredients that make a great tube amp! The value of the parts alone is already plenty of justification for purchasing a GA15.
Now, to bring out the full potential of the GA15, we’ve developed a number of drastic modifications to its original design from the ground up. These mods (described in more detail here) convert the little Harley into a pure tube amp with a full, warm sound and some nice power-tube overdrive on tap. They also reduce hum. With a suitable extension speaker the GA15 gets enough power (a bit more than 18 Watt) to play in a rock band with a loud drummer!
In the extensive step-by-step manual, modifications are arranged in order of increasing complexity so that, before diving into the deep, there is some room for learning along the way. Nevertheless, it needs to be said: the mods may be quite challenging to perform if you have no previous experience at all with electronics! A nice challenge for those long winter evenings?! A list of the required parts is provided on page 6 of the manual; the included tone capacitors are a mix of Mallory and Silver Mica types.

The IC-driven tone circuit of the stock GA15 is replaced with a Baxandall tonestack (Included tone caps are a mix of Mallory and Silver Mica types, contrary to above pictured version with Silver Mica and “Orange drop” capacitors).
 

The printed 27-page full-colour manual is optional (view it online here).

Additional information

Printed 27-page full-colour manual?

Printed manual included, Printed manual online