The Space Heater is an 8-channel tube overdrive that can be used as an analog summing mixer or as a multi-channel studio effects device, utilizing the tube circuitry for a range of effects from subtle warmth and grit to full harmonic distortion.
The Space Heater is a high performance summing mixer that allows you to blend tracks out-of-the-box in the analog domain, with oversized output transformers and vacuum tubes for vintage warmth and character. Eight mono input channels or four stereo pairs are available, with a heat switch on each pair to adjust the voltage on the 12AX7 tube - lower voltage settings starve the tube for a more pronounced distortion effect. Separate Drive and Level controls on each channel give you complete control over each tube circuit, providing a range of tones that allow you to fatten up digital stems or provide a distorted effect on vocals, guitars or drums.
Radial Space Heater Features
- 8-channel 12AX7 tube overdrive with summing mixer
- 35, 70, and 140 volt Heat switch
- Channel outputs allow for use on single tracks
- Transformer coupled outputs for vintage tone
- Space Heater Analog Summing Mixer1
- Power supply1
- Circuit TypeClass A tube gain stage with IC buffers
- Frequency response 20Hz – 20Khz, +0/-3dB
- Total Harmonic Distortion (THD+N) Variable
- Dynamic range 96dB
- Input impedance – Bypassed 50kΩ in parallel with your load device
- Input impedance – Active 100kΩ
- Maximum input +22dBu
- Gain+33dB@140V, +29db@70V, +27dB@35V
- Gain - Mix Bus6dB above individual channel output
- BypassFull Bypass
- Clip Level – Output +26dBu
- Output impedanceBalanced
- Outputs 180 Ohms
- Output Impedance - Headphone Out 15 ohms
- Output Impedance - Mix Bus Out 100 Ohms
- Common Mode Rejection -70dBu @ 55Hz
- Equivalent input noise-103dBu
- Noise floor - Maximum Gain -64dBu@140V, -66dBu@70V, -70dBu@35V
- Noise floor - Controls at 50% -70dBu@140Hz, -72dBu@70V, -76dBu@35V
- Intermodulation distortionVariable
- Unity Gain Control SettingDrive and Gain at “11 o’clock”
- Number of channelsEight channels
- Input Connectors ¼” TRS, DB-25
- Output Connectors DB-25
- Insert Connectors 8 x ¼” TRS Send, 8 x ¼” Receive
- Mix bus output XLR Low pass filter -5dB @ 40Hz, 6dB/Octave slope
- XLR configurationPin 2 +, Pin 3 -, Pin 1 GND
- Power Supply (Included) External switching type 100V – 240V AC, 1600mA output with 5 pin XLR
- Construction 14 gauge steel chassis and outer shell
- FinishPowder coat
- Construction 14 gauge steel chassis and outer shell
- Dimensions 17.5” x 6” x 1.75” (44.5 x15.25 x 1.75cm)
- Weight 8.5 lbs (3.8kg)
- Conditions For use in dry locations only between 5°C and 40°C
- Warranty Radial 3-year, transferabl
