The JBL SE-400 SE is a power amplifier manufactured by JBL from 1968 to 1972 in the USA. It features a sleek silver design and was originally priced at approximately 1,680 DM. The SE-400 SE is part of a series that includes the JBL SG-520 E preamplifier and the JBL SE-408 SE power amplifier. This am...