SPL PassEQ Black

Passive filter

The Passeq owes its beautiful sound characteristics to the entire passive filter (variable resistor, capacitor and coil). High-quality components, the charging behavior of the capacitors and the saturation behavior of the coils combined result in the desired sound of many mastering engineers.

The relative inertia compared to potentially fast active filters is the reason for the pleasant and very musical sound characteristics. SPL themselves would describe it as "smooth, transparent, silky and with a pithy bass".

Q & Mid Range Cut

Musical sounding curves - that was the aim when building this high-quality mastering eq. And this is exactly what the manufacturer achieved without having to make any compromises: While Pultec EQs from the 50s/60s still had to contend with high background noise and a very limited frequency selection, the Passeq now offers the exact opposite.

With new, specially manufactured coils, the mid range cut band starts working from 200 Hz. This means that the mid-range bands are tuned even more harmoniously for sum processing than on the previous model.

Output

The large, detented output control now allows you to boost or cut up to 10dB to address downstream studio equipment at the perfect working level.

Simple recall

To simplify the recall of all parameters, gain, Q (HF+) and output have been equipped with 41-step detented potentiometers. All other parameters are switched via 12-position switches, making it easy to achieve perfect recall of all settings.

Auto Bypass & Interval

For more convenience when mastering and as with all new SPL mastering devices, the Passeq also has an auto bypass. Naturally, the channels can be deactivated and activated manually using large illuminated buttons, but thanks to the automatic process, you save yourself the step. Even a freely selectable time window can be set.

Air Band

Here too, improvements have been made compared to its predecessor. Another highlight is the HF+ band, which has been extended to 25 kHz and 35 kHz. A quick test and you won't want to miss this feature again.
Passeq - A REAL sound enhancer.

SPL Passeq Red Overview:

• two-channel mastering equalizer
• Air band with gridded +/-10dB control
• mid-cut band at 200 Hz
• Custom-made individual coils for the filters
• Optimized bandwidths per frequency range
• Inertia of the filters ensures pleasant, musically advantageous sound characteristics
• transparent, smooth sound with silky highs and powerful basses
• Easy recall thanks to detented potentiometers and 12-position switch
• Auto-bypass & interval function