by SIR Audio Tools
), but some users still swear by it. Its simple user interface and rather capable feature set make it a useful tool even in this modern age of VST plugins. However, SIR1’s biggest drawback is that it is only compatible with 32-bit VST plugin hosts on Windows. Mac owners and Windows users running 64-bit digital audio workstations are out of luck. The user interface is well designed, with the file browser on the right, waveform display on the top, the control parameters on the left, and the spectrum display on the bottom.
The user can adjust the pre-delay time and the envelope of the loaded impulse response. The IR can also be time-stretched, which is a great feature for a convolution plugin. SIR1 has a fixed latency of 8960 samples and is optimized for low CPU consumption. Compatibility: 32-bit VST plugin format for Windows
Official page for SIR1 — the download is hosted by SIR Audio Tools.
No account needed — one rating per visitor.
Hosts
by Low Profile
Cloud Seed is perfect if you need a dramatic, 80s-style reverb effect. It is an excellent freeware alternative to commercial plugins like Valhalla Shimmer ($50) or Eventide Blackhole ($199).
Autotune
by Graham Yeadon
GSnap is an old plugin, but it’s still quite capable and fully compatible with modern DAWs. It was the first free autotune VST on the market.
Autotune
by g200kg
KeroVee is another old-school pitch correction tool, released way back in 2010. Although it looks less modern than the previous three autotune VSTs on this list, KeroVee’s feature set is on par with…
Autotune
by Resonant Cavity
Voloco is a free and lightweight autotune plugin designed exclusively as a creative tool. Voloco is an intentionally robotic-sounding autotune plugin for electronic and urban music.
Distortion
by Venn Audio
Best Overall · ★★★★★ 4.
Distortion
by Kazrog
Best for Mastering · ★★★★★ 4.