{"product_id":"spl-audio-pq-mastering-equalizer","title":"SPL Audio PQ Mastering Equalizer","description":"\u003cimg src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/elementor\/thumbs\/SPL-Audio-PQ-Mastering-Equalizer-1-1-rgcj19zsz1afv0o76hvz2gjlvtpur1et7ia3rszoqo.webp\" title=\"SPL Audio PQ Mastering Equalizer (1) (1)\" alt=\"SPL Audio PQ Mastering Equalizer (1) (1)\" loading=\"lazy\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\u003ch1\u003ePQ\u003c\/h1\u003e\t\t\t\t\n\t\t\u003cp\u003eMastering Equalizer\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\u003cp\u003eThis is a unique equalizer – for several reasons. It has two times five fully parametric filter bands, each of which can be switched between constant Q and proportional Q! And there’s sheer unlimited headroom and a very special kind of EQ sound – thanks to 120V technology.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/elementor\/thumbs\/SPL-Audio-PQ-Mastering-Equalizer-2-rgcj1la1hkybu8w69y5ivbn1eecr6vil4vhm9bdm2o.webp\" title=\"SPL Audio PQ Mastering Equalizer (2)\" alt=\"SPL Audio PQ Mastering Equalizer (2)\" loading=\"lazy\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\u003cp\u003eThe Filter Bands\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/elementor\/thumbs\/SPL-Audio-PQ-Mastering-Equalizer-rgcjelcxisq0avi9lx0mjfj82l90we1m5gydjj3ls0.jpg\" title=\"SPL Audio PQ Mastering Equalizer\" alt=\"SPL Audio PQ Mastering Equalizer\" loading=\"lazy\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\u003cp\u003eStepped Potentiometers\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eRecall of all settings is easy thanks to the potentiometers with 41 steps.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eCut\/Boost \u0026amp; 1\/4 Gain\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eEach filter band can be boosted or cut up to 20 dB.\u003c\/p\u003e\u003cp\u003eIf only minimal changes are required, the 1\/4 Gain switch can be used to reduce the boost or cut range from +\/-20 dB to +\/-5 dB.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eFrequencies\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eWe have designed the frequency distribution to overlap widely between the bands, so that problematic frequencies can also be addressed with two bands.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003ctable style=\"height: 116px\" width=\"272\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 330 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLMF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e33 Hz – 1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e128 Hz – 4.1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMHF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e310 Hz – 10.2 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e760 Hz – 24 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eBandwidth Q\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eThe bandwidth Q determines the steepness of bell characteristic. A small Q is a wide bandwidth and a high Q a narrow bandwidth.\u003c\/p\u003e\u003cp\u003eThe labeling of the scale is divided into two parts. The values with white background refer to the proportional Q mode and the values without background refer to the constant Q mode.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eConstant \u0026amp; Proportional Q\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eThe blue button is used to toggle the Q mode.\u003c\/p\u003e\u003cp\u003eIn constant Q mode, the amplitude is constant regardless of the selected bandwidth. This is ideal for eliminating interfering frequencies.\u003c\/p\u003e\u003cp\u003eIn proportional Q mode, the amplitude is proportional to the bandwidth. It decreases with increasing bandwidth and vice versa. At the smallest bandwidth setting, the maximum amplitude value is +\/- 20 dB, while the maximum amplitude decreases to +\/- 2.8 dB at the largest bandwidth setting. This control behavior simplifies sensitive, creative processing and is musically very useful, since high amplitudes become increasingly unusable with increasing bandwidth.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eOn\/Off\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eThe orange button is used to switch the individual filter band on and off. \u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\u003cp\u003eThe Center Section\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/elementor\/thumbs\/SPL-Audio-PQ-Mastering-Equalizer-2-rgck6w9x55486m7w2e83jyrqf82vg3muyralx6zi0w.jpg\" title=\"SPL Audio PQ Mastering Equalizer (2)\" alt=\"SPL Audio PQ Mastering Equalizer (2)\" loading=\"lazy\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\u003cp\u003eAuto Bypass\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003c!--StartFragment --\u003e\u003cp\u003eFor an objective evaluation of the edited music program, it makes sense not to switch between the original signal and the edited signal yourself, but to leave this to an automatic system.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eIt is also an advantage that, for an optimal evaluation of the processing, one does not have to move from the stereo center and can concentrate fully on the program.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eWith the help of the Interval control the switching time window can be determined. Turning it clockwise extends the time interval.\u003c\/p\u003e\u003c!--EndFragment --\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eThe 120V technology\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eThe 120V technology is our reference technology. The 120V technology is unique in the world. It operates at a DC voltage of 120 volts. This is four times that of IC-based semiconductor op-amps.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/elementor\/thumbs\/imgi_68_Phonitor-se-innen-2048x1368-1-rgc3oajyau9p84s2c5t0qyptqlifmq6gr160l5jj0g.jpg\" title=\"imgi_68_Phonitor-se-innen-2048×1368\" alt=\"imgi_68_Phonitor-se-innen-2048x1368\" loading=\"lazy\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\u003cp\u003eThe highest possible audio quality requires the highest possible audio operating voltage.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eThe 120V technology works with +\/-60 V. To be able to handle such a high voltage, we have developed special proprietary operational amplifiers that can operate with a DC voltage of +\/-60 V: the SPL 120V SUPRA operational amplifiers.\u003c\/p\u003e\u003cp\u003eThis high voltage would destroy conventional components and operational amplifiers.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThe 120V technology achieves exceptional technical specifications and sonic benefits. Technically, in terms of dynamic range, signal-to-noise ratio and headroom. Sonically, in terms of richness of detail and an absolutely relaxed listening experience.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eBy the way, the “120V” in the name of the technology has nothing to do with the local mains voltage from the mains power socket. This is about the operating voltage inside the device with which the audio signals are processed.\u003c\/p\u003e\u003cp\u003eThe mains voltage from the mains power socket is transformed to the required secondary voltage in the device’s internal linear power supply with toroidal transformer. Rectifiers convert this AC voltage into DC voltage required in the audio device.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg width=\"1419\" height=\"798\" src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/2025\/12\/imgi_29_Galaxy-Ref-Mastering-4-1.jpg\" alt=\"imgi_29_Galaxy-Ref-Mastering-4-1\" title=\"imgi_29_Galaxy-Ref-Mastering-4-1\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\u003cp\u003eThe idea for SPL 120V technology and the SUPRA operational amplifier based on this technology were developed in the 1990s by SPL founder and chief developer Wolfgang Neumann.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eWith the goal of building the best mastering console ever, this basic technological philosophy then took shape for the first time – thus the SPL MMC1 Mastering Console for Galaxy Studios saw the light of day in 2000.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eThe outstanding sonic and technical features quickly got around in the scene – so further orders were not long in coming.\u003c\/p\u003e\u003cp\u003eBesides the MMC 1, another legendary product with 120V technology was created with the PQ, the “King of Parametric Equalizers”.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg width=\"1000\" height=\"563\" src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/2025\/12\/imgi_30_Wisseloord-Studios-2014_-787.jpg\" alt=\"imgi_30_Wisseloord-Studios-2014_-787\" title=\"imgi_30_Wisseloord-Studios-2014_-787\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg width=\"1024\" height=\"509\" src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/2025\/12\/imgi_31_wisseloord_1500-pq-1024x509-1.jpg\" alt=\"imgi_31_wisseloord_1500-pq-1024x509\" title=\"imgi_31_wisseloord_1500-pq-1024x509\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\u003c!--StartFragment --\u003e\u003cp\u003eSince that time, 120V technology has been the foundation for all SPL premium products. Meanwhile, not only for mastering applications, but also for the, studio or hifi use.\u003c\/p\u003e\u003c!--EndFragment --\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--StartFragment --\u003eComparison\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003c!--StartFragment --\u003e\u003cp\u003eMost audio devices work with an internal operating voltage of +\/-15 volts and can thus process a maximum input level of +21.5 dBu. If a DAC, for example, has an output level of +22 dBu at 0 dBFS, level peaks of the music material would already cause overloads in the input stage of the device.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eAll components in the audio device often operate at their limits. The result is an unsteady sound that causes stress and faster ear fatigue.\u003c\/p\u003e\u003c!--EndFragment --\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003c!--StartFragment --\u003e\u003cp\u003eSPL devices with 120V technology can handle input levels of +32.5 dBu thanks to the higher internal operating voltage of +\/- 60 volts – thus offering 12 dB more headroom. All components consequently operate continuously in the optimum operating range. The result is a very pleasant, natural and relaxed sound experience. So you can enjoy your music in every detail.\u003c\/p\u003e\u003c!--EndFragment --\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eThese diagrams clearly show the superiority of the 120V technology in comparison to other circuits with lower, common operating voltages.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg width=\"501\" height=\"561\" src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/2025\/12\/imgi_33_120V-Diagramm_Dynamikumfang-Farbe_EN.png\" alt=\"imgi_33_120V-Diagramm_Dynamikumfang-Farbe_EN\" title=\"imgi_33_120V-Diagramm_Dynamikumfang-Farbe_EN\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg width=\"497\" height=\"536\" src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/2025\/12\/imgi_34_120V-Diagramm_MaximalpegelFarbe_EN.png\" alt=\"imgi_34_120V-Diagramm_MaximalpegelFarbe_EN\" title=\"imgi_34_120V-Diagramm_MaximalpegelFarbe_EN\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg width=\"938\" height=\"1024\" src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/2025\/12\/imgi_35_120V-Diagramm_THD_NFarbe_EN-938x1024-1.png\" alt=\"imgi_35_120V-Diagramm_THD_NFarbe_EN-938x1024\" title=\"imgi_35_120V-Diagramm_THD_NFarbe_EN-938x1024\"\u003e","brand":"Sur Sargam","offers":[{"title":"Default Title","offer_id":52663880614185,"sku":null,"price":769060.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0682\/0750\/9801\/files\/SPL-Audio-PQ-Mastering-Equalizer-2.webp?v=1770878585","url":"https:\/\/sursargam.com\/products\/spl-audio-pq-mastering-equalizer","provider":"Sur Sargam","version":"1.0","type":"link"}