In the intervening years, there have been significant advancements in guitar effects, not least with digital modulation and delay effects that are more portable, versatile, and reliable.

With little more than a gutted record player, a light bulb, and the legendary 555 timer IC, [Jacob Ellzey] has constructed this very slick optical tremolo effect for his guitar. By modulating the ...

Whether I’m improvising guitar solos or writing riffs for songs ... and in Figure 9 I add microtonal bends for a more ...