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SPL Sound Performance Lab TwinTube
Tube Saturation and Tube Harmonics Processor


The SPL TwinTube delivers the two single most important sound effects generated by tubes: Saturation and Harmonics.
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List Price: $1,599.00
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SPL Sound Performance Lab TwinTube
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The SPL TwinTube delivers the two single most important sound effects generated by tubes: Saturation and Harmonics.

The warmth, presence and suppleness analog tube and coil filtering provide can enrich any production, regardless of the music genre.

Saturation effects are generated through the tube being pushed to and beyond its normal operating limits. In contrast to semiconductors, a tube thus pushed to such levels does not clip from a certain level, approaching more gradually its level limits and thereby producing its typical tonal result, which in audio signal processing can have such often profitable aural effects­—on one hand (and depending on the amount applied), from subtle to extensive harmonic distortion and on the other hand, a compaction of the sonic event, that is, a limiting effect that exhibits a pleasant, rounded or soft sound.

A special circuit comes into play for overtone/harmonic processing that involves a combined coil/condenser system working in conjunction with the tube. The control reacts dynamically to the audio signal and thereby processes both overtones as well as a signal’s phase structure.

SPL TwinTube Features:

  • TwinTube's saturation effects are sonicallycomparable to the effects of tape saturation
  • Saturation for more warmth and loudness; subtle toclear effects
  • Harmonics for more presence and clarity withoutadding appreciable levels (as with EQs); moves signals to the front of a mix
  • Extremely versatile for all kinds of signals, such as vocals, acousticguitars, drums, strings, and brass

SPL TwinTube Specifications:

  • Input/Output:
    • XLR connector, electronically balanced, opt. transformer balanced
    • Input Impedance: 20kOhm
    • max. Eingangspegel Harmonics: +18dBu
    • max. Eingangspegel Saturation: +21dBu
    • Output Impedance: 150Ohm 
    • max. Ausgangspegel: +21dBu
  • Measurements:
    • Frequency range Harmoncis: 10Hz-80kHz
    • Frequency range Saturation: 10Hz-77kHz
    • THD Harmoncis: 0,1%
    • THD Saturation: 0,02 - 15% (Sat. max)
    • S/N Harmonics: -87dBu (A-weighted)
    • S/N Saturation: -96dBu (A-weighted)
    • Dynamic range Harmonics: 103dB
    • Dynamic range Saturation: 114dB
    • CCMR: -74dBu
  • Signal-LED: -20dBu   
  • Overload-LED: +18dBu (peak hold 1,5 seconds)
  • Power Supply:
    • Toroidal transformer
    • Voltage Selector 115V/230V   
    • Power Consumption: 
    • bei 230V: 9,1W/10,8VA
    • bei 115V: 5,6W/7,1VA
    • Fuses: 
      • 230 V AC, 50 Hz: 315 mA
      • 120 V AC, 60 Hz: 630 mA
  • Dimensions (BxHxT): 19" x 1.73" x 11.81" (482 x 44 x300mm)
  • Weight: 10.6lbs (4.8kg)

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