Vanguard and Slayer2 have been updated by reFX. VANGUARD combines the good old analog synthesizer idea with the latest technology. All analog devices of classic synthesizers are emulated by high-quality DSP (digital signal processing) functions. SLAYER is a FX plugin that can use up to 16 effects simultaneously; half of them before, and half of them after the amplifier. You can place any of the sixteen available stomp-box effects in any of the sixteen available effect slots.