SPL PQ MASTERING EQUALIZER RED Mastering Equalizer
Estimated delivery in Italy between 22 and 29 June
Mastering Equalizer
The SPL PQ MASTERING EQUALIZER is a dual-channel, fully parametric five-band mastering equalizer. The SPL PQ MASTERING EQUALIZER Model 1540/1544 is a revised new edition of the well-known SPL PQ MASTERING EQUALIZER Model 2050. Both units are based on 120V rail technology, and the new SPL PQ MASTERING EQUALIZER features the same high-quality characteristics as the previous model. All five bands can be activated or deactivated, and you have the option (for each individual band) to switch separately between constant Q and proportional Q characteristics, a feature that has not yet been replicated in any other equalizer. Each channel can be fully activated or deactivated, thanks to Auto-Bypass, which can also be automated in a freely selectable time interval. Furthermore, the bypass of each band and the constant Q of the left side can be controlled from the right side in Link mode. Thanks to the 1/4 Gain-Switch, you can reduce the maximum amplitude boost or attenuation by a factor of 3/4, which adjusts the potentiometer from max +/- 20 dB to +/- 5 dB cut. This gives you the ability to make small corrections, common in Mastering, or larger ones in Proportional-Q mode. With the SPL PQ MASTERING EQUALIZER, you can also adjust the Gain, Frequency, and Q parameters in 41 steps with stepped potentiometers, allowing for extremely precise adjustments.
Specifications
- Frequency range: 10Hz - 40kHz
- CMRR (1 kHz, +34 dBu, band 1-5 ON, B / C = 0: > -82dB
- Transmission bandwidth: (3 dB, band 1-5 ON, B / C = 0) - THD & N 10 Hz-100 kHz (@ 24dBu, Constant-Q)> 107dB - THD & N (@ 24dBu, Proportional-Q)> 106dB
- Noise (unweighted, at 24 dBu, band 1-5 ON, B / C = 0) - 91dBu
- Noise (A-weighted, 24 dBu, band 1-5 ON, B / C = 0) - 94dBu
- Noise (CCIR, at 24 dBu, band 1-5 ON, B / C = 0) - 86dBu
- Harmonic distortion: 0.2% at 1 kHz / -30 dBu - 0.05% at 1 kHz / -20 dBu - 0.01% at 1 kHz / 0 dB - 0.002% at 1 kHz / + 10 dBu - 0.0005% @ 1kHz / + 30 dBu
- Input Impedance: 20kOhm - Max. Input Level: + 32.5 dBu
- Output Impedance: <600Ohm - Max. Output Level: + 32.5 dBu
- Power consumption: max. 61W
- Fuses: 230 V / 50 Hz: 3.15 Amp - 115 V / 60 Hz: 6.3 Amp
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About SPL
SPL (Sound Performance Lab) is a German company renowned worldwide for producing professional audio equipment of the highest quality. Specializing in dynamics processors, preamplifiers, DA/AD converters, monitor controllers, and mastering hardware, SPL is a benchmark in the most prestigious recording, mastering, and broadcasting studios worldwide. The proprietary Voltair technology, which operates at 120 volts in audio circuits, ensures superior dynamic range and headroom compared to conventional devices. SPL products combine precision German engineering, selected components, and a functional design oriented towards professional workflow. On musicdelivery.net, you can find the complete range of outboard gear, monitor controllers, and recording studio solutions by SPL.
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Shipments
Shipments
We ship throughout Italy and the European Union via selected express courier partners. All orders travel in special reinforced packaging and are covered by 100% included insurance to fully protect the value and integrity of professional equipment during transport.
Returns and refunds
Returns and refunds
You can request a return within 14 days of receiving the order. As these are professional hardware and devices, items must be returned completely intact, unused, unactivated, and sealed in their original packaging, complete with all accessories and manuals.
Frequently Asked Questions
Can't find the answer you're looking for? Our team of specialists is at your disposal for configurations or technical questions.
What are your shipping and delivery times?
What are your shipping and delivery times?
Orders are processed within 24/48 business hours. Delivery is made by insured express courier to guarantee maximum protection and safety even for the most delicate and expensive equipment.
Are the products covered by an official warranty?
Are the products covered by an official warranty?
Yes, all products are 100% original and covered by the official 24-month manufacturer's warranty. In addition, our technical department offers free after-sales support to assist you with the initial setup of your system.
How does the right of withdrawal work?
How does the right of withdrawal work?
If the hardware does not meet your expectations, you can return it within 14 days of receipt. The product must be returned intact, unused, and sealed in its original packaging, complete with all accessories and manuals.
What does it mean if a product is "Available on order"?
What does it mean if a product is "Available on order"?
Some complex professional audio systems or lighting equipment are ordered directly from official distributors based on customer requests. You can proceed with the purchase as normal and our team will immediately inform you of the exact arrival times at our warehouses.

