TK Audio TEQ – Dual-Band Extended Mastering and Mix Bus EQ with M/S Function

OVERVIEW

TK Audio’s TEQ is a dual-band EQ based on the classic Baxandall circuit from the 1950s, loved by engineers for its smooth and natural sound.

This extended mastering and mix bus EQ with M/S function features:

• Two bands with 10 frequencies each
• Peak/ Shelving selectable on each band
• Cut/boost with up to 0.25dB resolution
• Selectable extended cut/boost range up to +/-8dB
• HPF and LPF with 6 frequencies each
• M/S function for separate processing of mid and side channels
• Cue switch for monitoring of left/right or mid/side channels
• All rotary controls stepped

The 10 frequencies on each band extend from 30Hz to 720Hz and 1kHz to 24kHz, and both bands can be switched between shelf and peak.

The cut/boost range starts with 0.25dB steps up to 1dB, then continues with 0.5dB steps up to 4dB and for more cut or boost, the Ex switch extends the range up to +/-8dB.

TEQ has a low Q (0.5) for gentle tone shaping and musical adjustments.

With the HPF removing unwanted low-end rumble, mud and bass build-up from the mix is easy, and the LPF removes harshness and smooths the high-end.
HPF and LPF have 6 frequencies each.

To make the TEQ even more useful, it has a built-in M/S function to effortlessly adjust the mid and side channels separately.

TEQ also has a cue function to monitor the left and right channels separately, or the mid-side channel if M/S mode is active.

All audio switches have gold contacts.

High and low band frequency selection is made by relays that combine capacitors for the selected frequency.

KEY HIGHLIGHTS

Classic Baxandall Design, Modern Precision

Built on the legendary Baxandall EQ topology, TEQ delivers smooth, natural tone shaping while offering modern stepped controls with resolution down to 0.25 dB for precise mastering moves.

Dual-Band Flexibility with Peak or Shelf Modes

Each band features 10 carefully selected frequencies and can be switched between peak and shelving operation, allowing TEQ to adapt effortlessly from subtle polish to more assertive shaping.

Extended Cut and Boost Range

With standard ±4 dB control and an extended mode up to ±8 dB, TEQ provides both finesse and power without sacrificing musicality.

Mastering-Grade HPF, LPF and M/S Processing

Integrated high-pass and low-pass filters clean up low-end rumble and high-frequency harshness, while the built-in M/S function enables independent mid and side EQ adjustments for enhanced stereo control.

FEATURES

• Low band frequencies: 30/45/60/90/120/180/240/360/480/720Hz – switch for shelf or peak mode, Q=0.5
• Low band cut/boost: +/- 0.25dB/0.5dB/0.75dB/1dB/1.5dB/2dB/2.5dB/3dB/3.5dB/4dB
• Ex:
The Ex switch extends the maximum cut/boost range to +/-8dB (please note that the steps are not exactly x2 of the panel marks)
• High band frequencies: 1kHz/1.5kHz/2kHz/3kHz/4kHz/6kHz/8kHz/12kHz/16kHz/24kHz – switch for shelf or peak mode, Q=0.5
• High band cut/boost: +/- 0.25dB/0.5dB/0.75dB/1dB/1.5dB/2dB/2.5dB/3dB/3.5dB/4dB
• HPF: 20Hz/25Hz/30Hz/40Hz/50Hz/60Hz, 12dB/octave, Q=0.5 – the HPF uses one control for both channels.
• LPF: 12kHz/14kHz/16kHz/18kHz/22kHz/27kHz, 12dB/octave, Q=0.7 – the LPF uses one control for both channels.
• In/Out and M-S
Illuminated switches for EQ in/out and M-S function in/out – the EQ In switch has a light glow in bypass if M-S is not activated.
• Cue switch: Allow the user to cue the left or right channel or the mid and side channel if M/S function is active – two green LEDs show if the cue switch is activated

TECHNICAL SPECS

Input Impedance: 20kohm

Max Input Level: +27dBu

Output Impedance: 68 ohms

Max Output Level: +27dBu

Frequency Response: 20Hz-80kHz +/-0.1dB

THD+N at 0dBu with Cut/Boost at 0dB: 0,0005%

THD+N at +20dBu with Cut/Boost at +20dBu: 0,0005%

S/N: 95dB

Dynamic Range: 122dB

No Electrolytic Capacitors in the Audio Path

Extra-Wide Audio Bandwidth

Power Consumption: 14VA

Voltage: 115V or 230V selected via an internal voltage selector

*Specifications and components may be changed or updated without further notice.