The Radial Engineering Space Heater is an innovative 8-channel tube overdrive and summing mixer, designed to add natural warmth and character to audio signals. At the heart of the Space Heater is a 12AX7 vacuum tube on each channel, which can be driven to varying degrees for subtle harmonic enhancement or full-on distortion. Each tube is powered by an adjustable voltage control, allowing users to starve the tube to achieve more pronounced saturation effects.
Space Heater’s flexibility makes it ideal for a range of applications, from tracking individual instruments and warming digital tracks during mixing, to analog summing of stems and subgroups. Each of the eight channels features an independent heat control to adjust the amount of tube drive, as well as a level control to manage the overall signal. A dry/wet blend control is also included per channel, enabling precise parallel processing without the need for external routing.
In addition to the individual channel outputs, the Space Heater includes an internal stereo summing mixer, allowing users to mix multiple signals together and output them as a stereo pair, bypassing the need for an external summing mixer. This makes it particularly useful for engineers and producers looking to bring more cohesion and analog richness to their final mixes.
Connectivity is extensive: each channel is equipped with an XLR/TRS combo jack for balanced line-level inputs, a TRS insert jack for integrating external effects, and a dedicated TRS output for individual channel outputs. The summing mixer outputs via balanced XLRs, and a master stereo level control is provided to adjust the overall summed output.
With its heavy-duty 19″ rackmount chassis and professional-grade build quality, the Radial Engineering Space Heater is built to withstand the demands of both studio and live environments. Its ability to provide everything from subtle warmth to gritty overdrive, combined with versatile routing and summing options, makes it a powerful and creative tool for modern music production.
Features
- 8-channel tube drive with independent control
- 12AX7 tube per channel for warmth and distortion
- Voltage control to starve tubes for enhanced saturation
- Individual heat, level, and wet/dry blend controls per channel
- Built-in stereo summing mixer
- Balanced XLR/TRS combo inputs
- Individual TRS direct outputs per channel
- Insert points for external effects on each channel
- Balanced XLR stereo outputs for summed mix
- Master stereo level control
- Rugged 19″ rackmount chassis
- Designed for studio and live applications
