WillistonAudioLabs Posted July 8, 2015 Report Share Posted July 8, 2015 This "100 watt" amp went for $360 MSRP back in 1989 (today's equivalent of $550), the Autotek 7100 BTS (Bass Thrust Series). Amp internals were designed and manufactured by Stephen Mantz (Zed Audio) and like the early HiFonics amps from the 80's and 90's, still in very high demand. No built in crossover, no terminal strips for connections, just a bare bones stereo 50x2 amp with the added features of bass/treble adjustments. Yes my friends, this was a big deal back in 1989! No huge wattage numbers here, so don't get too excited, but here are the ratings: 50x2 @ 4 ohms 0,015% THD 90x2 @ 2 ohms 0.015% THD 180x1 @ 4 ohms bridged 0.015% THD The SMD / D'Amore Engineering Amp Dyno measures THD at 1%. All tests were performed at 1kHz, and industry standard for full range amplifiers. See the video on YouTube in full HD 1080P or embedded below: Quote See my videos on YouTube http://www.willistonaudio.com Many tests and demos of OLD and NEW SCHOOL car audio gear! See cool pics on Instagram @oldschoolstereo Link to comment Share on other sites More sharing options...
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