Acon Digital Media released version 2.5 of the Studio Necessities collection of DirectX and, new in v2.5, VST compatible plug-ins.

Studio Necessities includes:

• StudioVerb: a high quality reverberation simulator.
• StudioModulator: a phaser effect and delay modulation effects such as flanger and chorus.
• StudioEQ: a six-band full parametric equalizer with six different filter types, including peak and shelving filters.
• StudioLimiter: a brickwall limiter.
• StudioDynamics: a versatile dynamic processor.
• StudioDelay: a multi-tap delay effect.

The plug-ins support multi-channel audio up to eight channels, including 5.1 and 7.1 surround formats. Both PCM formats (up to 32-bit resolution) and floating point (IEEE 32 bit) formats are supported.

Studio Necessities costs $49; the upgrade to version 2.5 is free for registered Studio Necessities users; a demo version is available.