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Radial Space Heater Analog Summing Mixer
[DISCONTINUED] Radial Space Heater Analog Summing Mixer

[DISCONTINUED] Radial Space Heater Analog Summing Mixer

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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

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