QUAD II amplifiers are one of the most popular items bought on eBay. Here are a few pointers that might be useful. Buyers tend to favour amplifiers with very close serial numbers but this is not really...
A common misconception is that the rated power of loudspeakers is a measurement of how loud they are and an amplifier has to have the same power output as the rated power of the loudspeakers it is used with....
A question I hear a lot. Do I need to have my Valve amplifier biased? So What is Bias. Well to put it simply the bias of a Valve amp is set by adjusting the grid voltages to set the idle current of the...