JL Audio TwK-D8 Tuning DSP 8 Channel Digital Input Only 8 Channel Analog Outputs

JL Audio TwK-D8 Tuning DSP 8 Channel Digital Input Only 8 Channel Analog Outputs


System Tuning DSP controlled by TüN software, Digital INPUT ONLY / 8-ch. Analog Outputs



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Product Information

System Tuning DSP with Digital Optical Input / 8-ch. Stereo RCA Outputs / 1 Digital Optical Output

The TwK™ D8 is a state-of-the-art digital signal processor engineered to deliver world-class system tuning capabilities in an easy-to-use format. 

Equipped with an advanced 24-bit DSP processor, the TwK™ D8 is equipped with a digital optical (Toslink) input and connects directly to our FiX™ 82 OEM Integration DSP, or any 2-channel digital (S/PDIF) output, to maintain an all-digital signal path.

The TwK™ D8 is also equipped with flexible output options, 80 total bands of equalization and powerful mixing tools. The included DRC-200 Digital Remote Controller offers dual level controls, toggles up to six presets, and has an LED indicator.

Control the TwK™ D8’s entire feature set by connecting it to your PC via USB, using the companion TüN™ Software interface.

  • All-digital, optical (Toslink) input connects directly to any digital (S/PDIF) output.
  • Flexible input mixer allows left and right input channels to be combined with full control over each input’s level and polarity.
  • 8 banks of 10-band graphic or parametric equalizers with configurable EQ assignment
  • Powerful crossover section with fully variable, high-pass and low-pass filters, crossover slopes are selectable from 6 dB/octave to 48 dB/octave (in 6 dB/octave increments)
  • Configurable polarity and delay settings, with separate entries for speaker distance plus offset control; fully linkable with other channels, in any combination, for adjustment
  • Precise output level controls, adjustable in 0.5 or 0.1 dB increments, fully linkable with other channels, in any combination
  • 8 analog, line-level RCA output jacks (4V RMS)
  • Optical (Toslink) output jack provides a pass-through digital audio (S/PDIF) signal from any pair of input channels, with no signal processing applied.


  • Power Supply Type    Regulated DC-DC SMPS
  • Input Operating Voltage    10 - 16 VDC
  • Standby Current Draw    <1.5 mA
  • Operating Current Draw    0.7 A
  • Recommended Fuse Value    1 A
  • Input Channels    Single Digital Input
  • Input Type    Differential-Balanced
  • Input Voltage Range    250 mV - 7.1 V RMS
  • Minimum Input Voltage    10 mV RMS
  • Input Level Setting    N/A
  • Output Channels    Eight
  • Analog Output    Unbalanced, stereo RCA jacks
  • Digital Output    Optical (Toslink) output (S/PDIF)
  • Output Impedance    450 Ω
  • Latency    Optical - Optical: 4.860 mS
  • Optical - Analog: 4.805 mS
  • S/N Ratio    96 dB (A-Weighted, referred to 4V RMS Output)
  • THD+N @ Rated Output    0.02% (20 Hz - 20 kHz)
  • Audio Resolution    24 bit / 48 kHz
  • Number of EQ Bands    10 x 8 Channels
  • Remote Level Control    Included (DRC-200)
  • Remote Level Functions    Master Volume Control + Trim; Master Volume Control + Fader; Zone Control, LED Status Reporting

What's Included

  • TwK-D8 Processor
  • 5-Pin Euroblock (Phoenix) connector
  • 15' USB cable (Type-A on one end
  • Type-B on other end
  • 2.0)
  • 18' Control cable w/ RJ-45 connectors on both ends
  • DRC-200 Level Control Knob w/ 46" attached cord terminating in a female RJ-45 socket and attached status LED w/ 38" cord
  • LED mounting collar
  • Two locking nuts
  • Two flat washers
  • Owner's manual

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