{"product_id":"tegeler-audio-classic-equalizer-eqp-1-passive-tube-equalizer","title":"Tegeler Audio EQP-1 Passive Tube Equaliser","description":"\u003ch3 style=\"text-align: center;\"\u003eAnalogue Magic and Precision for Modern Studio Workflows\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eTegeler Audio Classic Equalizer EQP-1\u003c\/strong\u003e is a premium dual-mono passive tube equaliser delivering vintage Pultec-style tonal shaping with German precision engineering. Its passive LC filter network, ECC83 tube amplification stage, and custom transformers add weight, depth, and three-dimensional clarity to any source - from individual instruments to full mix buses. The EQP-1 provides the musical warmth and air that digital plug-ins cannot replicate, making it essential for recording engineers, mixing specialists, and mastering studios seeking uncompromising analogue authority.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"1581\" height=\"728\" src=\"https:\/\/www.youtube.com\/embed\/tacAz2WKk6Y\" title=\"Classic Equalizer EQP-1 acoustic guitar (no talking)\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePassive Filter Topology Meets Pure Tube Warmth\u003c\/strong\u003e\u003cbr\u003eAt the heart of the EQP-1 is a classic passive filter network constructed from high-grade inductors and capacitors. Unlike active equalisers that alter audio signals through continuous feedback loops, passive circuits preserve the natural phase coherence and harmonic integrity of your source material. The audio signal is subsequently amplified by a handcrafted ECC83 tube stage and coupled through custom-wound input and output transformers. This architecture infuses your audio with rich harmonic density, pleasing warmth, and analog authority the moment the unit is inserted into your signal chain — even when the EQ controls remain at zero.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLegendary Low-End Sculpting via Simultaneous Boost and Cut\u003c\/strong\u003e\u003cbr\u003eThe EQP-1 unlocks the famous Pultec low-end trick, allowing engineers to boost and attenuate the same low-frequency band simultaneously at 20 Hz, 30 Hz, 60 Hz, or 100 Hz. Because the boost and cut curves operate on slightly offset frequency slopes, combining both controls produces a tight, punchy low frequency push while clearing out muddy lower-mid resonance. Kick drums gain foundational sub-bass impact without boomy smear, while bass guitars stay articulate, focused, and locked firmly in the mix.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSilky Smooth Highs and Dual-Mono Flexibility\u003c\/strong\u003e\u003cbr\u003eFor high-frequency enhancement, the EQP-1 features a peak boost section spanning 3 kHz to 20 kHz with a dedicated variable bandwidth control, complemented by a smooth high-frequency shelving cut at 5 kHz, 10 kHz, and 20 kHz. This allows you to add silky top-end sheen and vocal presence without introducing harshness or digital grain. With two fully independent channels and hard relay bypass controls, the EQP-1 functions seamlessly as two separate mono equalisers during tracking or as a perfectly matched stereo unit across the mix bus and mastering chain.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePassive Pultec-inspired LC equaliser circuit utilizing premium inductors and capacitors.\u003c\/li\u003e\n\u003cli\u003eDual-mono two-channel architecture suitable for independent tracking or stereo mix bus duties.\u003c\/li\u003e\n\u003cli\u003eClass-A tube amplification stage powered by high-grade ECC83 vacuum tubes.\u003c\/li\u003e\n\u003cli\u003eCustom input and output audio transformers for added harmonic richness and signal density.\u003c\/li\u003e\n\u003cli\u003eSimultaneous low-frequency boost and attenuation at 20 Hz, 30 Hz, 60 Hz, and 100 Hz.\u003c\/li\u003e\n\u003cli\u003eHigh-frequency peak boost from 3 kHz to 20 kHz with variable bandwidth control.\u003c\/li\u003e\n\u003cli\u003eHigh-frequency shelving cut options at 5 kHz, 10 kHz, and 20 kHz for taming sibilance.\u003c\/li\u003e\n\u003cli\u003eTrue relay hard bypass per channel for transparent signal comparison.\u003c\/li\u003e\n\u003cli\u003eBalanced XLR inputs and outputs for seamless studio connectivity.\u003c\/li\u003e\n\u003cli\u003eStepped rotary controls ensuring precise channel matching and repeatable mastering recall.\u003c\/li\u003e\n\u003cli\u003eHandcrafted in Berlin, Germany with a robust 2U rackmount chassis.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTech Specs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e Dual-Mono \/ Stereo Passive Tube Equaliser\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 20 Hz – 22 kHz (±0.5 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Range:\u003c\/strong\u003e ≥ 110 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Input \u0026amp; Output Levels:\u003c\/strong\u003e +22 dBu Maximum Input | +22 dBu Maximum Output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpedance:\u003c\/strong\u003e Input: ≥ 2.4 kΩ | Output: \u0026lt; 600 Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube Complement \u0026amp; Transformers:\u003c\/strong\u003e ECC83 \/ 12AX7 Vacuum Tubes | Custom Balanced Input \u0026amp; Output Transformers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-Frequency Bands:\u003c\/strong\u003e 20 Hz, 30 Hz, 60 Hz, 100 Hz (Shelving Boost \u0026amp; Cut, ±12 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Frequency Boost:\u003c\/strong\u003e 3 kHz, 4 kHz, 5 kHz, 6 kHz, 8 kHz, 10 kHz, 12 kHz, 16 kHz, 20 kHz (Peak, ±12 dB) with Variable Bandwidth (Q)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Frequency Cut:\u003c\/strong\u003e 5 kHz, 10 kHz, 20 kHz (Shelving Attenuation, ±12 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudio Connectivity:\u003c\/strong\u003e 2 x XLR Female Inputs (Balanced) | 2 x XLR Male Outputs (Balanced)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBypass Mode:\u003c\/strong\u003e Relay Hard Bypass (Per Channel)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm Factor \u0026amp; Dimensions:\u003c\/strong\u003e 2U 19-inch Rackmount Chassis | 483 x 89 x 250 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 5.0 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply \u0026amp; Consumption:\u003c\/strong\u003e 110 V – 230 V AC, 50 \/ 60 Hz | \u0026lt; 25 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiscover Tegeler Audio Classic Equalizer EQP-1:\u003c\/strong\u003e \u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca rel=\"noopener\" style=\"color: rgb(43, 0, 255);\" title=\"Discover Tegeler Audio Solutions\" href=\"https:\/\/www.tegeler.com\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.tegeler.com\/en-US\/ClassicEqualizer\" target=\"_blank\" title=\"Discover Tegeler Audio Mastering Solutions\" rel=\"noopener\"\u003ehttps:\/\/www.tegeler.com\/en-US\/ClassicEqualizer\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tegeler Audio","offers":[{"title":"Default Title","offer_id":67882136666148,"sku":"TEG-EQP1","price":30995.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/8294\/files\/ADSRS_TegelerAudioClassicEqualizerEQP-1img01.png?v=1792862412","url":"https:\/\/www.audiosaurus.co.za\/products\/tegeler-audio-classic-equalizer-eqp-1-passive-tube-equalizer","provider":"Audiosaurus ","version":"1.0","type":"link"}