Chris "laserdisc" Person on Twitter: "Yamaha AST/YST speakers back then used a really convoluted system that used negative impedance to sound amazing. Also I am glad people like Roland MA-12, really is
![Yippee! They're back — my Roland MA-8 speakers have returned from the dead – WeAreTheVoicesInYourHead.com Yippee! They're back — my Roland MA-8 speakers have returned from the dead – WeAreTheVoicesInYourHead.com](http://media.zzounds.com/media/feed/large/BEHMS16.jpg)
Yippee! They're back — my Roland MA-8 speakers have returned from the dead – WeAreTheVoicesInYourHead.com
![Roland PC-200 MKII Midi Keyboard Controller & MA-12C Micro Monitor Speakers, Audio, Soundbars, Speakers & Amplifiers on Carousell Roland PC-200 MKII Midi Keyboard Controller & MA-12C Micro Monitor Speakers, Audio, Soundbars, Speakers & Amplifiers on Carousell](https://media.karousell.com/media/photos/products/2015/11/21/roland_pc200_mkii_midi_keyboard_controller__ma12c_micro_monitor_speakers_1448087975_38b8d458.jpg)