500 Series EQ

Dangerous Music didn’t bring BAX to the 500-series until it could be done with zero compromise. BAX500 follows the same core design principles as the rackmount BAX EQ, using identical exacting components selected for both performance and sound, and tested to draconian tolerances to ensure consistency, reliability, and long-term stability.The Broad BAX500 shelves shape several octaves at once, allowing small adjustments to unlock depth, sheen, and weight without pinching the sound or introducing phase incoherence or harshness. Where narrow, surgical EQs excel at solving problems, BAX500 is designed to make musical decisions—revealing what’s already there rather than imposing a new character.High Cut and Low Cut filters with smooth, natural slopes remove infrasonic rumble and ultrasonic interference that quietly eat headroom, smear transients, and reduce clarity. By cleaning up the extremes before further processing, BAX500 helps mixes translate more easily while preserving openness and punch.The signal path is DC-coupled up to the Low Cut filter and features a relay-controlled hard-wired bypass that physically removes the circuit from the signal path for true A/B comparisons. The steel enclosure is fully shielded to protect against unwanted electromagnetic interference, and the laser-etched, paint-filled faceplate is designed to remain legible and durable over decades of use.

Console-grade EQ in a Compact ModuleTeeming with legendary Neve character, the 88R LBEQ packs four bands of parametric, console-style EQ into a convenient 500 Series module. The Neve 88R LBC is patterned after the topology of the large-format 88RS console, yielding a sublime combination of high-precision transparency and high-impact tone shaping. From subtle enhancement to intricate frequency surgery, you’ll value this module’s console-grade flexibility, melding ±20 dB gain per band, extensive frequency overlap, and smoothly adjustable Q. Moreover, the 88R LBEQ’s musical response, nonexistent phase shift, and broad headroom rival that of its large-format predecessor. Boasting the same sonic pedigree trusted and employed by such iconic facilities as Abbey Road, AIR Studios, and The Village, the 88R LBEQ brings elite-class tone-sculpting capabilities to modern hybrid studios seeking both legendary Neve sonics and the power, headroom, and control modern engineers demand.Precision EQ with a revered pedigreeThe Neve 88RS console stands as one of the brand’s crowning achievements, revered for its sonic accuracy, aural transparency, and muscular punch. Built around the same precision topology as the 88RS, the 88R LBEQ packs the same sonic wallop as the venerated large-format console, reimagined as a compact 500 Series module. And it does so without compromise, delivering over +27dBu of headroom, greater than 107dB dynamic range, and ultra-low distortion of less than 0.004%. Moreover, it draws less than 145mA RMS while maintaining optimal headroom and transient response. With the 88R LBEQ, you’ll gain access to the same authoritative character found in the world’s top studios, such as Abbey Road, Air Studios, and The Village.Neve: the legend continuesAt Sweetwater, the name Neve commands reverence. Rupert Neve started designing audio equipment in the tube console era but made his mark with solid-state designs. Setting up shop in Little Shelford in the ’60s, Mr. Neve faced many obstacles establishing his brand amid a new technological landscape. Transistors were new, expensive, and difficult to obtain in quantity in the UK. Reliable faders didn’t exist yet — a far cry from today’s world, where parts are affordable and readily available from multiple suppliers, all competing to win bids. Nevertheless, Rupert persisted. And by the early 1970s, the Neve company was humming along, taking orders and building custom transformer-balanced consoles for recording and broadcast studios the world over.Neve 80-series consoles had a huge, punchy, and authoritative sound that defined the sound of ’70s rock. From London to New York to Los Angeles and beyond, top studios were installing Neve desks as fast as they could. By 1978, with the introduction of the majestic 8078 — the pinnacle of handwired analog “production” consoles — and NECAM automation system, Neve boards were the main component of the success formula for any recording studio with world-class aspirations. In the decades since, Neve has innovated with groundbreaking products such as the VR, VX, and 88R series consoles. And today, the company continues to advance the state of the art with cutting-edge pro audio gear that sounds incredible and intelligently addresses the challenges of the digital age.Neve 88R LBEQ Features:Packs console-style EQ into a convenient 500 Series moduleNeve 88RS-style topology yields a sublime combination of high-precision transparency and high-impact punch4 bands of parametric EQ tackle subtle enhancement and intricate frequency surgery with equal aplombDelivers ±20 dB gain per band, extensive frequency overlap, and smoothly adjustable QMusical response, nonexistent phase shift, and broad headroom rival that of the full-sized 88RS consoleHandcrafted in England using premium components and calibrated in house

Classic Three-Band Parametric EQ with Legendary Harrison CharacterThe Harrison Audio MR3eq brings the punchy, smooth sound of the iconic MR3 console into the compact and flexible 500-series format. Crafted from decades of analog filter design expertise, this high-performance equalizer delivers both precision and musicality, making it a versatile go-to tool for tracking, mixing, and broad tonal sculpting.Key Features:Three-band parametric EQ with a generous ±10 dB of boost/cutHigh-frequency (800 Hz–15 kHz) shelf band switchable to a second-order bell with proportional QLow-frequency (40 Hz–800 Hz) shelf band also switchable to bell with proportional QMid-frequency (400 Hz–8 kHz) band with continuously variable proportional Q controlSeparate high-pass filter (HPF) with a musical 3 dB resonant peak and 12 dB/octave slopeIndependent ‘In’ switches for the EQ and HPF sectionsInput overload LED for clear gain-staging feedbackCompact and rugged—fits any standard 500-series rack

Sculpt instruments, enhance busses and fine-tune mastersULTRAVIOLET Stereo Equaliser (UV EQ) takes the acclaimed minimum phase-shift Violet stereo EQ section from Fusion and puts it into 500-series format, whilst adding two fully parametric SSL mid-band EQ's featuring precision 'Focus' mode for the ultimate in 500 Series EQ flexibility and tonal control. UV EQ is the perfect partner for the SSL G-COMP Stereo Bus Compressor module, offering advanced SSL processing all from 500 Series modules. Features4-band Stereo EQHigh and low shelving bandsMinimum-phase design inherited from FusionDual fully parametric mid-bandsPrecision 'Focus' mode High-Pass Filter at key fixed frequenciesDedicated output TrimSurgical precision to creative colour  Beyond Violet is ULTRAVIOLET Over and above Fusion's Violet EQ, UV EQ takes features further, adding two dedicated mid-bands, with precision Focus mode. They're classic SSL parametric mid-bands capable of the traditional SSL processing techniques but also go far beyond, offering absolute surgical precision all the way to creative 'notch' style filtering and resonant screaming. Focus modeFocus mode allows users to ‘hone in’ on problem frequencies or specific frequencies they want to accentuate or attenuate. Pressing the ‘Focus’ switch in, automatically narrows the chosen Q setting further and increases the range of gain available beyond the normal +/-9 dB operation, to a huge +/-18 dB. In true flexible SSL workflow fashion, it transforms this sweet sounding, musical SSL EQ into a more surgical tool.HPF & TrimRemove rumble and tighten up low frequencies, the HPF found on UV EQ brings a world of flexibility when processing low end. The interaction with LF shelving band offers unique ways to sculpt signals and yes, UV EQ is capable of the sought after boost + cut effect. Dedicated Trim control means you can hit convertors with plenty of headroom or smash into them the perfect amount when clipping is desired.

Loved by Generations of Professional ProducersThe E-Series EQ 500 series module reproduces the legendary sonic signature of an early 80's classic, the equaliser section of the Solid State Logic SL 4000 E console channel strip, which has featured on countless classic recordings from the 1980's to the present and shows no sign of stopping. The 611 design E-Series EQ also feature on Solid State Logic's latest audio production console, ORIGIN. FeaturesImmortal SSL 4000 E Series circuitry"Black-242" and "Brown-02" twin EQ designVersatile 4 band channel EQBell curve option on HF and LFFully parametric LMF and HMF with QBased on classic 611E console channel stripUnique response & tonal characterThe E-Series EQ Module features two different EQ's found on editions of the console produced between 1981 and 1989. Each EQ has unique response curves and tonal character. Historically the type of EQ fitted in an individual console was distinguished by the colours used on the LF knob caps so the two flavours have become known as the 'Brown' and 'Black' EQ's. On the E Series EQ Module you can switch between these two different flavours of EQ that have been loved by generations of professional producers. 

Deceptively simply, extremely effective SiX Channel Strip (SiX CH) is a single-width 500 Series channel strip using the SuperAnalogueTM channel processing features from SSL’s SiX console including the Mic-pre, low and high frequency EQ, as well as the single knob compressor.FeaturesSSL SuperAnalogueTM  mic pre+48V phantom powerPhase invert switch5 segment LED meter in dBuSwitched 12 dB/oct, 75 Hz High Pass Filter (HPF)Classic SSL HF and LF EQSwitch from shelf to bell curveSingle knob Channel Compressor with variable Threshold.Front Panel TRS Line Input with 1MΩ Hi-Z switch.SuperAnalogue Using the same technology as SiX and large-format SSL consoles, SiX CH features a SuperAnalogueTM mic pre, offering wide gain range and ultra-low noise. It’s clean, fast and punchy - the perfect preamplifier for any source material.SSL HF and LF EQSiX CH EQ is a classic SSL style gentle, broad stroke two-band design with high and low shelving filters at 3.5 kHz and 60 Hz, +/-15 dB gain range. Each band can be independently switched between shelving and bell curves. The bell curves change centre frequency to operate at 5 kHz and 200 Hz giving greater versatility from the two controls.Channel compressor A ‘one knob’ channel compressor with features that give powerful and versatile performance from its deceptively simple controls. Using the tried and tested SSL feed-forward circuit design, program-dependant attack time and automatic make-up gain to maintain signal level.TRS Line Input The front facing TRS line input offers a convenient way to add instruments on the fly or use SiX CH as a feature packed summing module. 10 kΩ nominal Line Input impedance can be changed to 1 MΩ via the Hi-Z switch. The 1MΩ impedance makes this input suitable for very high impedance sources such as passive guitar pickups without the need for an external DI box.

Chandler Limited's Little Devil Equalizer fits into any 500-series module, putting Chandler's all-discrete circuitry, transformer-balanced designs, and premier hand-made quality into the popular modern format. The Little Devil Equalizer is an English-style console EQ, which uses concepts from famous 1081 and 33115 vintage units. Its features a treble and bass shelf with +/- 18dB, with treble set to 12k and bass selectable between 50 and 110Hz. Hi-mid and lo-mid offer +/-18dB, with 7-selection "Q" switching on each band. There's also a 3-position filter and hardwire bypass onboard the Chandler Limited Little Devil Equalizer.Chandler Limited Little Devil Equalizer Module at a Glance:If you like fat and punchy sounds, you'll love the Little Devil EQYour sonic obsession: Chandler's missionVintage EQ for your 500 Series rackIf you like fat and punchy sounds, you'll love the Little Devil EQChandler Limited's Little Devil 500 Series Equalizer is an ideal go-to EQ for in-your-face snares and fat, punchy kick drums. In fact, it sounds great on everything. It delivers rich-sounding and distinctively vintage-flavored EQ, while giving you the modern control you need to sculpt your sound precisely. Designer Wade Goeke's number one rule is that he would not make anything he wouldn't put in his own rack. We'd add that the Little Devil EQ is definitely a piece you want in your rack.Your sonic obsession: Chandler's missionRecording engineers are always looking for fresh tonal colors and approaches when tracking - it's an obsession. Chandler feeds this addiction with their innovative take on the technologies of the past. They start with painstaking component selection. The Little Devil EQ's parts list reads like a 40-year-old document. Seriously - they just don't build 'em this way anymore. Hand-wired and assembled in the USA, the Little Devil EQ utilizes 100% discrete transistor circuitry and specially wound transformers. Aside from the fact that you'll have this puppy forever, the weapons-grade build quality is a means to an end - the sound. Glorious, fat, supremely musical sound, with amazing headroom. Stock your arsenal with the Chandler Limited Little Devil 500 Series Equalizer.Vintage EQ for your 500 Series rackChandler Limited's collection of EQs, compressors/limiters, and preamplifiers are among the best in the industry. Indeed, Chandler Limited's innovative Germanium Series uses classic, smooth-sounding germanium transistors - like those found on the earliest Neve, EMI, Telefunken, and Fairchild units - to effectively revive that warm vintage sound palette. What's more, in addition to fantastic outboard gear, Chandler offers up classic sounds in plug-in form with their spot-on emulations of the legendary Abbey Road console. When you want a vintage touch brought to your modern recordings, trust Chandler Limited.Chandler Limited Little Devil Equalizer Module Features:English-style console Equalizer moduleTreble and bass shelf +/- 18dBTreble set to 12k, bass selectable between 50Hz and 110HzHi- and Lo-mid +/-18dB, with 7-selection "Q" switchingHi-mid - 8k2, 6k8, 5k6, 5k7, 3k3, 2k7, 1k2Lo-mid - 820, 560, 470, 390, 330, 270, 2203-position filter - 47, 82, and 150HzHardwire bypassRuns on any 500 series rack and Power Supply Unit

Chandler Limited is the only company in the world authorized to develop, manufacture and market the “Official Equipment” of EMI/Abbey Road Studios. So if you want the rich, warm, punchy sound of the "Curve Bender" EQ used on the Beatles' legendary Abbey Road album and Pink Floyd's Dark Side of The Moon in the convenient 500 Series format, the Chandler Limited TG12345 MKIV equalizer is the way to go. This handmade, fully discrete, single-width module draws its heritage from the channel EQs found on historic EMI TG12345 recording consoles of the late 1960s and early ‘70s. Featuring presence and bass bands with continuous boost/cut and true bypass, the Chandler Limited TG12345 MKIV puts the sweet sound of a legend in your 500 Series rack.Sweet broadband sound shapingAs a 2-band equalizer, the Chandler Limited TG12345 MKIV is not designed for surgical sound sculpting. For broadband sound shaping, however, Sweetwater considers it in a class by itself. Its control set may seem minimalist, yet it offers a reasonable amount of flexibility. The presence band is switchable between eight frequencies and an Out position. The first seven frequencies, from 500Hz to 6.5kHz, are bell curves; the eighth is a shelf at 10kHz. The bass band is shelving, with two frequency options: 90 and 150Hz.The sound of a legendThe groundbreaking sound quality of the EMI TG12345 recording console, dramatically richer and more highly detailed than the tube consoles it replaced, left its mark on legendary albums by the rock royalty of the era, including the Beatles and Pink Floyd, as well as solo outings by John Lennon, Paul McCartney, and George Harrison. Never commercially available, the TG12345 desks were retired from service in 1983. But the legend lives on — in the Chandler Limited TG12345 MKIV.Chandler Limited and their associated logos are registered trademarks of Chandler Limited, Inc. Abbey Road Studios, EMI, TG, REDD and RS and their associated logos are trademarks of EMI (IP) Limited.Chandler Limited TG12345 MKIV 500 Series EQ Features:Inspired by the channel EQs from historic EMI TG12345 consoles of the late '60s and early ‘70s2-band equalizer with presence and bass bands with continuous boost/cutPresence band switchable between eight frequencies and OutPresence bands are bell curves, except the highest (10kHz), which is shelvingBass band is shelving, with two frequency options: 90 and 150HzTrue bypass

Rupert Neve Designs 551 Inductor EQ; 3-band inductor eq (500 series); low eq: +/- 15db shelf or peak, selectable for 35hz, 60hz, 100hz or 220hz; mid eq: +/- 15db with 6 center frequencies: 200hz, 350hz, 700hz, 1.5khz, 3khz and 6khz; with high; peak switches to amplify the q factor; hishelf: +/- 15db shelf or peak, selectable for 8khz and 16khz; locut: 12db / octave at 80hz; rupert neve custom transformer; Format: API Series 500 Rack

The Heritage Audio 1084 has been engineered to fill input module slots in the restoration process of vintage 80 Series sound mixing consoles. It is also compatible with the Heritage Audio Frame 8 and Rack 2 powered enclosures. Special care has been taken in sourcing the correct components that ensure performance will be as close to a 1070s unit as it is possible nowadays. Custom polystyrene and film tone capacitors have been developed to closely match the Siemens Styroflex and Mullard Mustard types of the late 60s and early 70s. Custom input transformers have also been co designed with Carnhill Transformers´ Oxford factory to our special requirements. The Heritage Audio 1084 is entirely handmade in our facilities in Spain, employing the same old-fashioned wiring and soldering techniques of the 70s. All its circuitry is held into five plug in cards. Specifications: Microphone input impedance: HI, 1200 Ohm minimum, LO, 300 Ohm minimum. Higher gain positions gradually have greater impedances, optimum for low gain ribbon mics. Input is transformer balanced and floating. Line input impedance: 10KOhms bridging, transformer balanced and floating. Output impedance: Less than 75 Ohms, transformer balanced and floating, to drive a load of 600 Ohms. Maximum output: Greater than +26dBu into 600 Ohms, THD: Less than 0.025% at 1Khz, Less than 0.05% at 100Hz. Frequency response :20Hz (+0.3dB) to 20Khz (-0.2dB). Maximum Gain: Slightly greater than 80dB. Noise: Less than -100dBu. Power consumption: Less than 110 mA @24VDC.

The API 550 EQ played a major part in the history of music recording in the USA during the 60's and 70's. Originally conceived for use in API's consoles, this latest 550 "B" version is a continuation of the original 1967 550 through the 550A with one additional filter band and several new frequencies. Incorporating API's exclusive circuitry and proprietary components (such as the legendary API 2520 op-amp), the 550B artfully blends the past with the present. So many hit records still depend on the unique 550 sound, that the 550B will be an invaluable tool you will turn to again and again. The API 550B—unlike any other you will ever use.Many EQ's today offer a huge assortment of complex features, but the API 550B provides exactly the right number of controls to the professional engineer. Deceptively simple at first glance, the 550B's four EQ bands are overlapped significantly to aid in dual roles as problem solver and sweetening device. Each band offers 7 switchable filter frequencies spanning 4 to 5 octaves, selected through experience by a "who's who" list of the industry's most proficient engineers. This re-issue design has been taken from the original blue prints and spec control drawings from the API archives.Features: 4 bands of our famous sounding equalizationEach band offers 7 API selected frequency centersReciprocal and repeatable filtering12 dB of boost/cut per bandEQ Band 1 and 4 offer shelf/peak switching"Proportional Q" narrows filter Q at extremesTraditional API fully discrete circuit designHigh headroom +30 dB clip levelRe-issue of 1967 API 550 EQ with an extra band

Few equalizers enjoy the respect and admiration of the coveted API 550A. Designed by the now legendary Saul Walker in the late 60's, the discrete 550A was first used as a modular OEM equalizer. As the industry rapidly embraced the sonic quality of the 550A, it quickly found it's way into many custom console designs by Frank DeMedio and other leading engineers. Many of these consoles are still in use today.Forty years later, the 550A remains the standard against which other EQ's are measured, and it has played a major role in the recording industry for decades. Still copied but never duplicated, the 550A became API's standard channel module EQ when the company began manufacturing consoles in 1971. With virtually all existing units spoken for, popular demand for this EQ resulted in API finally resuming production in 2004.With the long-awaited reissue of this unit, an EQ that has had such a part in the history of recording is continuing to make history in today's music.         FEATURES3 bands of classic API equalization Each band offers 5 API selected frequency centers Reciprocal and repeatable filtering maximum 12 dB of boost/cut per band EQ Band 1 and 3 offer shelf/peak switching "Proportional Q" narrows filter Q at extremes Traditional API fully discrete circuit design High headroom +30 dB clip level