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Troubleshooting DIY kits – tube amplifiers

SVT Preamp is a renowned bass amplifier kit adaptation in a compact preamp format.

UralTone Hot Mama is an adjustable load box kit designed for guitar and bass tube amplifiers.

Installing a crimp type strain relief can be difficult. This article shows how to install one using a pair of pliers and a hammer.

Making a good solder joint is not difficult. A little practice and proper tools are all you need. We have compiled a selection of recommended, hobby-priced tools into one product: Tools and soldering stations (edited 4/2024) With the cheapest soldering iron, it’s difficult to make good solder joints. If the goal is to solder a […]

This article introduces the electronic components used in effect building and other low-voltage devices. We will go over what different components look like, how to interpret and read their markings, and where the parts are installed. The technical characteristics of the components will not be covered in this article. Electronic components are divided into two […]

Identifying components: Part Two In this article, we will explore the identification of larger components than the ones used in effect builds. This article partly repeats the first one, as the principles of identification remain largely the same. Electronics components are divided into two groups: passive and active. The naming is based on the part’s […]

Transistor selection.
In the Experimental F-Face kit, you can use any small signal NPN transistors. Each model naturally has its own sound in the circuit, but the biggest differences come from the transistor’s material (germanium or silicon) and gain factor (hFE). Read more…

In recent years, there has been a buzz among builders about a new way to adjust the output power of a tube guitar amplifier. The system was first launched and commercialized in the guitar amplifier field by Kevin O’Connor, who called it Power Scaling. The idea is very simple: by adjusting the operating voltage of […]

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