Download Castium Studio
Get the latest verified build for Windows with built-in low-latency audio loopback, Pro DJ Mixer, and Pro Broadcast Automation Suite.
Castium Windows Broadcast Suite
Includes the complete desktop console, Pro DJ Mixer & 10-band EQ, modular broadcast automation cards, real-time voice changer DSP, audio loopback drivers, and the responsive live web player.
Key Updates in Version 1.2.5:
Constant-Power Stereo Panning**: Smooth Left/Right balance control with quick center detent reset (C).
Installer Package:** CastiumSetup-v1.2.5.msi
DJ Sound Color Sweep Filter**: Bi-polar filter sweeping from a resonant Low-Pass Filter (sweeps down to 160Hz) to neutral bypass to a resonant High-Pass Filter (sweeps up to 3.5kHz).
Release Date:** 2026-10-23
80Hz Rumble Cut (High-Pass Filter)**: Dedicated broadcast-grade high-pass filter tuned to 80Hz to eliminate desk thumps, vibrations, and vocal plosives.
Pro DJ Presets**: 1-click loading for *Flat / Bypass*, *Club / EDM Bass*, *Radio DJ Voice*, *Rock & Live*, *Warm Vinyl & Acoustic*, *Hip-Hop Thump*, *Lofi Lounge*, and *Treble Sparkle*.
Live SVG Response Curve**: Real-time vector curve displaying aggregate frequency response across 20Hz - 20kHz with illuminated cyan/purple gradient fill.
Modular Studio Card**: Added "card-dj-eq" ("Pro DJ Mixer & 10-Band EQ") to the console layout with full persistence across restarts.
Instant Kill Buttons**: Illuminated **LOW KILL**, **MID KILL**, and **HIGH KILL** buttons with -inf dB full cutoff for drop transitions, vocal isolation, and beatmatching without clashing basslines.
10 ISO Frequency Bands**: Surgical acoustic tuning across 31Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1kHz, 2kHz, 4kHz, 8kHz, and 16kHz with +/- 12 dB precision vertical faders.
Mid-Side Stereo Width Expander**: Variable stereo field processing from �.0x (True Mono sum) for mono compatibility checks to 1.0x (Standard Stereo) and 2.0x (Super-Wide Stereo) for immersive spatial imaging in headphones and stereo monitors.
Analog Soft-Clip Limiter**: Hyperbolic tangent ( anh) saturation preventing harsh digital clipping while delivering punchy club-level loudness.
3-Band Frequency Isolator**: Dedicated HIGH (2.5k-20kHz), MID (300-2.5kHz), and LOW (20-300Hz) bands with -26 dB to +6 dB throw.
Hardware-Class Channel Architecture**: Separate discrete channels for Stereo Music Deck, Microphone Talkover, and Master Bus inspired by club-standard DJ consoles (Pioneer DJM, Traktor Pro, Serato DJ).
Music Trim & Microphone Gain**: Fine-grained -12.0 dB to +12.0 dB pre-gain leveling, channel mutes, and solo switches.
Release Archive
Download other builds and previous versions of Castium Studio.
Studio Companion Plugins
Extend your broadcast workflow with official hardware integrations and bots.
StreamDeck Companion
Hardware key mapping for Elgato Stream Deck. Trigger soundboard SFX, mute microphone, kill frequency bands, and monitor live VU meters.
Included in v1.2.5 Installer
Twitch Bot
Syncs now-playing track titles to Twitch chat, lets viewers use !song, and bridges Twitch chat into the live web player.
Stream Archiver
Automatic high-bitrate broadcast recorder with track splitting and ID3 tagging for creating on-demand podcast archives.
Included in v1.2.5 Installer