API 5500Item ID: API5500
Dual Equalizer with True Bypass, Range Control, Integrated Power Supply, and 1U Rackmountable Chassis
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From Our Research Team:
A Classic API EQ Made for the Modern Studio!The API 5500 dual equalizer puts the great sound and classic design of an API original into a rackmountable package that's even more versatile! Based on the venerable 550 equalizer designed by API founder Saul Walker, the 5500 adds new features such as a Range control for finer adjustments, true hard-wire bypass, and an integrated power supply that lets you apply mutes noiselessly. Two hand-built 2520 op amps (coupled with API's 2503 output transformer) provide plenty of headroom for clean operation. Whether you're tracking, mixing, or mastering, you'll love what the 5500 does for your sound.
API 5500 Dual Equalizer at a Glance:
The legacy of a classic API equalizer
The 5500 manages to make a legendary EQ design more relevant and user-friendly than ever. The lineage of the 5500 circuit can be traced back to the original 550 equalizer designed by Saul Walker, the founder of Automated Processes Inc. The 550 was designed as a console equalizer which, due to the architecture of the recording console, uses an unbalanced input. Because the ergonomics of a console dictate that the controls take up little space, sometimes the number of included functions can be limited. The 5500 is specifically designed to address these limitations. It has a balanced input, a true straight-wire bypass, an integrated power supply with noiseless muting, and a range control that expands it versatility to mastering applications.
No ICs in the signal path, plenty of headroom
Like all API products, the 5500 contains no integrated circuits in its signal path. The gain comes from two hand-built 2520 operational amplifiers in each channel. The balanced input is handled by a 2510 discrete operational amplifier, which is similar to the 2520, but without the high current output stage. Besides being a key component of the API sound, the 2520 coupled with the API 2503 output transformer is capable of delivering +30dBm before clipping. With this much headroom, it is unlikely that the 5500 can be driven to distortion unless perhaps another API unit is driving the input!
A finer range of control
The Range control feature gives you a high degree of control over the 55OO. The range of the amplitude controls can be reduced to 1/2 or 1/4 of their stated scale, providing a means of adjusting the tonal balance with finer resolution in an even gentler manner. This should be especially useful for complex program material as contained in stems or submixes, and is ideally suited for mastering purposes.
True bypass means no signal loss and no "thumps"
You'll appreciate the 5500's true hardwire bypass. In this mode the output connector is wired directly to the input. Shortly after the power is first applied, or immediately after it is lost, a special circuit enables bypass mode so signal is never lost and power thumps are never heard.
API 5500 Dual EQ with Range Switch Features:
The API 5500 equalizer adds modern functionality to a classic API EQ design!
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Reviewsbased on 5 reviews
by calin enache from bethesda, mdthis was my first hardware equalizer purchase and i must say i made a great choice. no matter what else i get, i will never sell this piece. it sounds just awesome. for bass, it may be the best eq out... read more [+] there. adding punch or weight to drums or a bass is a breeze. i also have the api 2500 and the combination is unreal. for drum buss its incredibly powerful, but i also use it on the mix buss, for guitars and synths, bass lines, and even vocals. i love api.. their stuff always sounds amazing close [-]
May 15, 2013
Music Background: producer and engineer
by Mike from LAAll I can say is wow! This is the best piece of gear I have ever bought. It sounds amazing on the 2 bus. Exactly what I was looking for. Don't think just buy it!
September 4, 2011
by JERU MORGAN from Beverly Hills, Ca.GREAT EQ SMOOTH AS BUTTER SOUND IS WARM TRANSFORMER BASE OLD SCHOOL THICKNESS. ANYTHING YOU RUN THROUGH SOUND BETTER. SOUNDS AS GOOD OR BETTER THEN ANY EQ ON THE MARKET. NOT SURGICAL LIKE OUR MANLE... read more [+]Y MASSIVE PASSIVE BUT IT TONE IS AS GOOD. HAS IT'S OWN UNIQUE SMOOTHNESS & TONE NOT BRITTLE AT ALL. HIGHLY RECOMMEND IT WE USE IT AS A STEREO BUSS, BUT WE HAVE FINALIZED AND MASTERED WITH IT HAS THAT GREAT TONALITY. SUPERB NOT SURGICAL FOR DIALING IN OR OUT NAT HAIRS. WE US THE LIL FREQ AND MASSIVE PASSIVE THOUGH NOT SURGICAL SOUNDS BETTER THEN THE LIL FREQ EMPIRICAL LABS, BUT THE LIL FREQ IS VERY VERY SURGICAL IF THIS HELPS.
October 10, 2012
Music Background: Play With Sly & the Family Stone 1974-77 We have Billborad #13 charted Records In The Past
FOR TONE GO API 5500 ITS THE BOSS. close [-]
Quality Stereo EQ with serious clarity
by Adam from Seattle, WAWhat it does is great. Hard to beat, serious. Just running audio through it brings a crispness, but not harsh. The 22hz slight bass boost is pure joy. The only thing that I'm knocking it for is th... read more [+]at it has no HPF or LPF. But, that leaves me to drool for the BAX, so no hard feelings. close [-]
April 18, 2012
Music Background: beats and bass
This is what I was looking for!
by John Ross from CaliforniaI had purchased the Bax EQ some time ago and all though I appreciated the high and low pass filters, It was just way to subtle and way to limited in what it does for me. This API 5500 fits my needs mu... read more [+]ch better!
September 29, 2011
Music Background: Producer, Composer, Recording Engineer
It's very clean and punchy and it opens up my mixes and brings them to life. If you need it to be more subtle (for mastering applications), the range control allows you to do that by cutting the amplitude by 1/2 or 1/4 increments. In addition, the controls are stepped which is also very useful for mastering apps. I also appreciate the power button being on the face of the unit as opposed to the back like the BAX EQ. You have every frequency you can think of available to work with and I think it's brilliant that the Q adjusts proportionally. In other words, With mild boost or cut you get a wide bandwith, as you increase the boost or cut the bandwith narrows. close [-]
James, Phoenix, AZ
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