The JA 200 amplifier reveals a perfection of lines and its two blocks per channel respond to an unusual symmetry of forms and colours.

When the eye follows the opposite diagonal, it is caught first of all by the black shape of the output transformer, then by that of the capacitors at the rear end of the other block. Black on black, chrome on chrome, these two blocks make up an indivisible visual whole.

This amplifier is made up of four blocks. Each channel has a power supply chassis and an amplification chassis made up of three input tubes and ten 6550 power tubes in a quintuple push-pull configuration.