So the answer definitely lies in one of these charts.
Roland Studio & DJ Equipment3 Artikel
Roland Studio & DJ Equipment
Established by Ikutaro Kakehashi in 1972 in Osaka, Japan, Roland is a world leader in the design, manufacture and distribution of musical instruments including pianos, keyboards and synthesizers, guitar products, electronic percussion kits, digital recording equipment, amplifiers and audio processing devices. Originally Ikutaro Kakehashi founded Ace Electronic Industries in 1960 to produce guitar amps, effect pedals and stuff, but in the early 70s, he cut ties with the company. At that time, Mister Kakehashi was contracted by Hammond to manufacture rhythm machines for the Hammond home organ collection. Amongst the most famous Roland products, you find such iconic pieces as the TR-8 Rhythm Performer, the VP330 Vocoder, the TB-3 Touch Bassline or the SP-404SX Sampler. Plus, live concerts wouldn’t be the same without the world-famous Roland amps.