Output amplifier for ribbon loudspeakers (2):

Because of the special requirements of the amplifier, its construction is somewhat different from that of more traditional output amplifiers. For instance, the large currents cause such strong stray magnetic fields that a wrongly connected supply line can cause problems. lt is, therefore, essential, for instance, that the buffer capacitors are located between the drivers and the power amplifiers so that the output transistors are as close to their supply points as possible. If this were not done, there would be a strong likelihood that the power lines would be 'modulated' by the strong amplifier signals.