tips&tricks with SlickEQ


Note: Some of the tips rely on features from the GE version.

Mixing against HP/LP combo

A good generic practice when EQing several tracks in a mix is too start by dialing in HP/LP combinations by an  appropriate level and then do further EQing/mixing against those settings. Also using the tilt filter is a good idea to apply very first and rough tonal corrections and then working out the details afterwards with the three EQs.

Preserving low-end energy when high-pass filtering

A cool trick to preserve some low-end energy when high-pass filtering is applied is to boost the low-end while using the EQ-SAT feature. As you can see in the routing diagram the HPF comes after the main EQs and EQ-SAT. This way, harmonic overtones are generated based on the fundamentals before the HPF is applied.

Decoupling the low-end

The low-end EQ features a “Phi” option switch which allows to decouple the low-end by an allpass filter network. The crossover can be freely adjusted with the normal frequency control in this band while the gain control does not have any effect in this mode. This may work great for that mellow bass drums just as an example but in other cases it might loose some definition as a trade-off.

Compare different settings

SlickEQ contains two effect settings slots, A and B. Use them in combination with the automatic output gain control to AB test different settings. Within the plugin you can move settings between A and B but also copy&paste is there to freely copy settings between different plug-in instances. Also, undo/redo comes in handy here.

Adjusting precise values

The gain/frequency displays can also be used to enter specific values and also shortcuts are accepted, e.g. “5k” can be entered to set a value to 5000. And did you know that SlickEQ has mouse-wheel support?



out now: SlickEQ “Gentleman’s Edition”


Key specs and features

  • Modern user interface with outstanding usability and ergonomics
  • Carefully designed 64bit “delta” multi-rate structure
  • Three semi-parametric filter bands, each with two shape options
  • Five distinct EQ models: American, British, German, Soviet and Japanese
  • Low band offers an optional phase-lag able to delay low frequencies relative to higher frequencies
  • High pass filter with optional “Bump” mode
  • Low pass filter with two different slopes (6dB/Oct and 12dB/Oct)
  • Parametric Tilt filter with optional “V” mode.
  • Six output stages: Linear, Silky, Mellow, Deep, Excited and Toasted
  • Advanced saturation algorithms by VoS (“Stateful saturation”)
  • Highly effective loudness compensated auto gain control
  • Stereo, mono and sum/difference (mid/side) processing options
  • Frequency magnitude plot
  • Tool-bar with undo/redo, A/B, advanced preset management and more

SlickEQ is a collaborative project by Variety of Sound (Herbert Goldberg) and Tokyo Dawn Labs (Vladislav Goncharov and Fabien Schivre). For more details, please refer to the official product page:


TDR VOS SlickEQ – video review

Read the whole story at


released: SlickEQ

TDR SlickEQ main flat

TDR VOS SlickEQ is a mixing/mastering equalizer designed for ease of use, musical flexibility and impeccable sound.

Three (and a half) filter-bands arranged in a classic Low/Mid/High semi parametric layout offer fast and intuitive access to four distinct EQ modes, each representing a set of distinct EQ curves and behaviors. An elaborate auto gain option automatically compensates for changes of perceived loudness during EQ operation. Optionally, SlickEQ allows to exclusively process either the stereo sum or stereo difference (i.e. “stereo width”) without additional sum/difference encoding.

In order to warm up the material with additional harmonic content, SlickEQ offers a switchable EQ non-linearity and an output stage with 3 different saturation models. These options are meant to offer subtle and interesting textures, rather than obvious distortion. The effect is made to add the typical “mojo” often associated with classy audio gear.
An advanced 64bit multirate processing scheme practically eliminates typical problems of digital EQ implementations such as frequency-warping, quantization distortion and aliasing.

Beside the primary controls, the plug-in comes with an array of additional helpers: Advanced preset management, undo/redo, quick A/B comparison, copy & paste, an online help, editable labels, mouse-wheel support and much more.

SlickEQ is a collaborative project by Variety Of Sound (Herbert Goldberg) and Tokyo Dawn Labs (Vladislav Goncharov and Fabien Schivre).

Key specs and features

  • Intuitive, yet flexible semi parametric EQ layout
  • Full featured, modern user interface with outstanding usability and ergonomics
  • Carefully designed 64bit “delta” multi-rate structure
  • Three EQ bands with additional 18dB/Oct high-pass filter
  • Four distinct EQ models: “American”, “British”, “German” and “Soviet” with optional non-linearity
  • Four output stages: “Linear”, “Silky”, “Mellow” and “Deep”
  • Advanced saturation algorithms by VoS (“stateful saturation”)
  • Highly effective and musically pleasing loudness compensated auto gain control
  • Oversampled signal path including stateful saturation algorithms
  • Stereo and sum/difference processing options
  • Tool-bar with undo/redo, A/B, advanced preset management and more


TDR VOS SlickEQ is a freeware audio plug-in available for Windows and Mac in VST and Audio Units format (both 64-bit and 32-bit). VST3 and AAX formats will follow later.

All downloads are available via the Tokyo Dawn Labs website.

Related Links

SlickEQ – some more release info

Just a couple of days ago we introduced the upcoming release of SlickEQ and lots of questions raised already. So, here is what Fabien already committed about it in a public forum:

  • Win/Mac, AU/VST2/VST3 (+AAX planned and in process), x32/x64
  • No linux builds planned, sorry.
  • The name is “TDR VOS Slick EQ” and it will be available for free.
  • Release is a matter of days. Maybe a week or two.

As of today I just want to add: With the introduction of TDR VOS SlickEQ, quite a number of amazing and previously unheard DSP algorithms will see the light of day – including (but not limited to) several Stateful Saturation algorithms running within an audio signal path entirely upsampled to a constant high sample rate for maximum precision.

Expect smoothness, best-in-class.

Related links:

what I’m currently working on – Vol. 12


Cauz its just cool to have such a slick collection 🙂

And of course I better should have titled “what we are currently working on”.

Related links:

tips & tricks with ThrillseekerVBL

The Sweet Spot

The plug-in includes a preset called “LA Sweet-Spot” and one can safely use this setting on almost everything just to add a little more mojo. Just drive the unit with a proper “IN GAIN” amount so that the overall compression and distortion fits to the source.

Increased Stereo Imaging

If ThrillseekerVBL is used on stereo program material, I would recommend to use the TRAFO option to have the most prominent stereo imaging effects. Also, if there is just a little gain reduction amount applied, I would prefer the “DUAL M” option opposed to “STEREO” linking. And I would always use the “DUAL M” option on sources like vocal groups, panned rhythm guitars and stuff.

VBL as a Mastering EQ

One common mastering trick to open up a rather flat/dull track is to dial in a slight but broad 5kHz boost with an analog tube equalizer. Due to the tube circuit also higher order harmonics are generated and the whole stereo image opens up.

This can be replicated perfectly with ThrillseekerVBL: Move the “BRILLIANCE” screw to its top most position and set the “AMP” knob to 0.68. If distortion is too much now, just back it off by dialing in some compression and/or lowering the input gain.

If the EQ effect amount is too much, simply use the “DRY:WET” option. Also make sure that the trafo is in and prepare yourself for pure awesomeness.

Some Shorties

  • Avoid pumping: Dial in some more “EMPHASIS”.
  • More HF focus: Turn the “BIAS” screw clock-wise.
  • Upward compression style: Dial in some dry signal amounts (just a little).

Thrillseeker XTC – behind the scenes

The basic idea to build a VoS style Enhancer/Exciter was already there way earlier but to that time it simply wasn’t doable until my ‘stateful saturation’ approach emerged. Later on and when I asked “how a modern exciter/enhancer should look like“, several concepts were laid out on the drawing board and I knew that with this exciting (sic!) new approach they all would be accomplishable w/o any compromises. Finally, one of them made it into a prototype which led to ThrillseekerXTC.

Old or modern approach?

So, is the audio Enhancer/Exciter just an ancient relict from the days of dull tape recordings or still a valid concept today? In the digital age, technology and production techniques completely changed and of course the production aesthetics did also. Opposed to the old approaches of audio excitation which mostly were focusing on high frequency loss restoration, the demand shifted towards other tasks as well. Presence and definition in the (upper) mid range is the name of the game and getting the low-end right is the key in a modern production. Instrument separation in a busy mix is a tough challenge, also.

What the heck is Mojo?

In some other cases (mostly digital productions) – definition, presence and transparency is all there but at the cost of a rather thin or sterile sounding production. Even worse, the HF department might be exaggerated too much during the processing chain and taming and sweetening is a challenge then. Some of the artifacts that we’ve found in certain analog devices might add tonal qualities described as thick, fat and round by ‘pleasingly degrading’ a sound source. This is what Mojo is all about. Whether that’s some circuit crosstalk, tape flutter or transformer distortion stuff alike. [Read more…]

short links, year end 2010 edition

Since we’ve had a great delay plug-in release this year some might be interested in some further reading about that topic. A short history about delay effects is given here and some more specific readings about tape delay can be found in the mixonline magazine. Need some overview about the Roland tape echo stuff? Just look here.

From time to time some effect developer apprentices are asking where to start. Today, almost everything can be found in the cloud. Sometimes DSP suppliers/developers are offering good overviews and introductions such as this example. Don’t hesitate to search for all those papers which are freely available, [Read more…]

those sexy curves again

proportional EQ curves

proportional EQ curves

What constitutes those smooth sounding equalizers some are raving all about? In fact the answer is pretty much simple but maybe disenchanting to someone else: It’s in the equalizers transfer curve and (almost) nothing else. That equalizer transfer curve determines the actual frequency and phase response and generally speaking, in an analog filter model the frequency response implies the according phase response (and vice versa). In the digital domain this holds not true in general as shown by linear phase filter implementations. Additional effects like the actual transient response or additionally generated harmonics are then the icing on top (if desired) but may appear quite subtle or even negligible if we just look into rather transparent devices. [Read more…]