reFX is developer of QuadraSID. QuadraSID emulates the Commodore 64 SID chip, enriched with many new functions. It can be controlled by MIDI-controllers. You can find Nexus2, Vanguard, quadraSID, Slayer2 and more at reFX. NEXUS2 is a next generation ROM synthesizer-plugin that delivers a level of sonic quality unsurpassed by even the highest end hardware. Check out our 24 reFX coupons, including reFX promo codes & 22 deals. Today's top reFX coupon code: NEXUS2 Includes These Free Expansions and More.