Stewart Copeland can be seen playing a Kurzweil K2500 throughout this video; it appears to be the 88 key X version.

From 1987 onwards, Maurice generally played keyboards or synthesizers, and he can be seen using Kurzweil K2500XS during concerts.

'The Kurzweil K2500x and K2500sx. This is a fully blown one but just under the maxed out model. It costs so much less but you get just as much. You don't get the brushed chrome exterior. I bought my first one at Sam Ash and I'm very happy with it. I was warned that the manual would drive me crazy. It turned out that I still haven't gotten through the manual but at a certain point in Kurzweil-eezz – when you're going through the thing and at a certain point in using it – a light bulb comes over your head and you say "Ahh, this is the method you're using.” This is how they distorted Ray's vision" (Jim's talking about Raymond Kurzweil, the designer of the original K250). I got my K2500sx from Kurzweil. It's fully blown with an internal hard drive and lots of memory. It's really a wonderful machine.'

Tony Kakko, the singer, has confirmed on the official Sonata Arctica website that he utilizes the Kurzweil K2500XS, describing it as a "work horse" alongside his use of the Korg Triton Pro. This information directly credits the source from the Sonata Arctica's official site under Tony Kakko's equipment section.

Found in Ronny's personal section in the band bio's from Pagan's Mind's website.

On this Instagram post it shows KLC of Beats by the Pound in the studio using a Ensoniq ASR-10, MPC-4000 and a Kurzweil K2500XS is seen to the left of the picture.

Philip Wolfe confirms his use of the Kurzweil K2500XS in a quote from the Metal Maidens website, stating, "I love using the Hammond B-3 and Minimoogs and other vintage synthesizers in that style along with my Korg CX3, Triton88 and Kurzweil K2500XS."