Sony TA-N55ES
Sony TA-N330ES
(1990 - 1995)

Smaller, later sibling to the TA-N80ES bestseller, the TA-N55ES was... also a bestseller ! The TA-N55ES was explicitly made to accompany the TAE-1000ESD Dolby-Pro Logic preamplifier and could be complemented by the small TA-N110 as well.

The N55ES uses the same toroidal trafo as the european TA-N80ES (aka mkIII) and uses two pairs of Sanken 2SC2921 / 2SA1215 for power output ; the main smoothing caps are 63V/12,000µF ELNA For Audio ; the four caps all rest on the same material as found in the TA-NR1 and TA-NR10, grainy resin cast - but here in bright red !
A big black heatsink keeps everybody cool and all this rests on Sony's G-Base, named after Gibraltar. Selling in Japan just as well as elsewhere, the TA-N55ES was a TA-N330ES there and benefitted from a second input with an added front pot to switch sources, as you can see here to the right.

There are thousands and thousands and thousand of N55ES playing around the world, whether in strict 2-channel systems or within home-theater systems. Pioneer (M-72 etc) and Yamaha (MX-1000 etc) may have made similarily priced amps in the 90s but none sold as well and for so long as Sony's TA-N55ES !