Audio transformers have been part of the audio signalflow and sound for decades. Since the first Focusrite ISA110 preamp modules were assembled in the late 1980s, the Lundahl LL1538 input transformer has been a major part of the Focusrite sound.
The LL1538 helps to provide the huge headroom and audible clarity that makes the sound of the Focusrite ISA range unmistakable, and has been manufactured in the same way by Lundahl in Sweden for 25 years. Focusrite take us on a tour around the Lundahl factory and find out why Focusrite still use the LL1538 to this day…