500 Series

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500 Series

API 527

Discrete Mono Compressor with Thrust Circuit and 10 Segment LED Meter - for the 500 Series Rack The API 527 Compressor is a single channel 500 Series module based on API's 225L discrete channel compressor - incorporated with ''Thrust'' circuit!

Price: $930.75

API 525

Discrete Compressor Limiter Re-Issue for the 500-Series Rack An exact replica of the legendary 70's-era workhorse, the 525 was (and still is) a sophisticated and transparent-sounding compressor/limiter. Featuring a fixed, very fast attack time, variable release times and a killer de-esser, the 525 also boasts a one-knob ceiling control which automatically adjusts output gain -- very musical, and very useful for people who like to work fast. Works with all 500-series powered racks.

Price: $1,100.75

API 512C

Discrete Mono Mic Preamp & DI for the 500-Series Rack One of the most famous mic preamps around, the 512C uses the sought-after 2520 op-amp, which yields 65 dB of distinctive, clean/creamy gain.
Based on the original API 512 mic pre, the modernized 512C has an astounding amount of headroom, making it one of our favorite preamps for use with ribbon microphones.
Works with all 500-series powered racks.

Price: $803.25

API 550A Production Model

Classic Discrete 3 Band EQ for the 500-Series Rack API made a lot of friends when they reissued the stalwart 550A EQ module a few years ago. Original specimens were going for crazy money and of course didn't always work. Fifteen points of astoundingly musical equalization housed in a compact yet wonderfully ergonomic module, the 550A works with all 500-series powered racks.

Price: $1,015.75

API 550A Saul Walker Edition

LTD Edition Modular 500 Series 3 band EQ, with 5 API-selected Frequency Centers, 12dB of Boost/Cut Per Band, Proportional Q Control, and a Custom Faceplate A Limited Edition Reissue of the Legendary 550A EQ ! The new API 550A Saul Walker Edition is identical in circuit design and parts complement to the recently discontinued re-issue version, with the addition of a special custom face-plate. The unit will also feature the signature of its designer, Mr. Saul Walker, founder of API.

Price: $1,950.75

API 550B

Discrete 4 Band EQ for the 500-Series Rack The 550B takes API's legendary 550A equalizer module and kicks it up a notch, adding an extra filter plus several additional frequencies to the proceedings. The singular 550 sound has been a part of countless hit recordings since the 60's. Works with all 500-series powered racks.

Price: $1,100.75

API 560

Discrete 10 Band Graphic EQ for the 500-Series Rack One of our favorite graphic equalizers out there, the 560 is a compact vertically mounted (surprise!) module that is amazingly intuitive and ergonomic.
Works with all 500-series powered racks.

Price: $803.25

Electrodyne 501

Discrete Two-Stage Transformer Balanced Mono Microphone Preamp & DI - for the 500 Series Rack The Electrodyne 501 is a two stage discrete transistor, transformer coupled preamp with active DI, using classic 1970's design technology.

Price: $895.00

Electrodyne 511

2-Band Discrete Mono EQ with Custom Inductors & Output Transformer - for the 500 Series Rack The Electrodyne 511 is a classic two-band discrete transistor reciprocal active inductor equalizer using classic 1970's design technology.

Price: $1,050.00

Little Labs VOG

Analog Bass Resonance Tool The VOG was originally designed to capture the chest resonance of vocalists or voice over artists, enabling them to still have a proximity type effect without having to be so close to the mic, hence the name, VOG, or Voice of God. However, when I heard it on kick drum and bass, it became clear this would be the go to device to make these instruments sound huge.

Price: $398.00

Great River 32EQ

Four Band Mono EQ, for the 500 Series Rack Great River introduces the sound of the renowned Harrison 32 Series console's classic EQ and filters to the 500 Series format!

Price: $775.00

Chandler Little Devil Compressor

FET Compressor Module with Sidechain Filter, for the 500-Series Rack Using all discrete circuits, transformer-balanced everything, and the American handmade quality you expect from Chandler, the Little Devil will take your lunchbox to the next level...

Price: $1,062.00

Chandler Little Devil Equalizer

EQ Module with Treble and Bass Shelf, Hi- and Lo-mid 7-selection "Q" Switching, and 3-position Filter, for the 500-Series Rack Using all discrete circuits, transformer-balanced everything, and the American handmade quality you expect from Chandler, the Little Devil will take your lunchbox to the next level...

Price: $1,237.50

Empirical Labs ELDS DerrEsser

De-esser and Dynamics Module for the 500-Series Rack Desser & Dynamic Section from the Lil FrEQ as a module for API 500 Series. Two of them work great for Mastering in stereo.

Price: $499.00

Burl B1D

Mono Class-A Discrete Microphone PreAmp / DI with Custom Transformers, for the 500-Series Format Introducing the B1 and B1D Microphone Pre Amps from Burl Audio. Based on the API 500 series form factor, the B1 was designed to complement the B2 Bomber ADC, and give you multi-channel pleasure. With the proprietary BX3 input transformer and BX2 output transformer, the B1 Mic Pre delivers warmth with depth and clarity. The B1D is the same as the B1 except that it has an all iron BX4 output transformer giving it a more terrifying rock tone. An all discrete transistor, class-A, direct coupled, capacitor free circuit path, gives the B1amazing punch on drums, beautiful tonality on guitars, and warmth with presence on vocals.

Price: $775.00

LaChapell 583s

Vacuum Tube Microphone and Instrument Preamp for 500 Series Racks Based on the popular 992EG, the LaChapell 583s is quickly becoming THE next must-have preamp for those looking to add that extra warmth and character to their lunch box collection found only within the thermionic realm. Transformers are as follows: input is the Jensen JT-115K, output is the JT-11-DM

Price: $945.00

LaChappell 583e

Discrete Class-A Mono Mic Tube PreAmp & DI with 3-band EQ, Jensen Input Transformer, for the 500-Series Rack Based on the popular 992EG, the LaChapell 583e is quickly becoming THE next must-have preamp/eq for those looking to add that extra warmth and character to their lunch box collection found only within the thermionic realm.

Price: $1,475.00

Burl B1

Mono Class-A Discrete Microphone PreAmp / DI with Custom Transformers, for the 500-Series Format Based on the API 500 series form factor, the B1 was designed to compliment the B2 Bomber ADC, and give you multi-channel pleasure. With the proprietary BX3 input transformer and BX2 output transformer, the B1 Mic Pre delivers warmth with depth and clarity. An all discrete transistor, class-A, direct coupled, capacitor free circuit path, gives the B1amazing punch on drums, beautiful tonality on guitars, and warmth with presence on vocals.

Price: $775.00

Purple Audio Biz MK

Discrete Microphone Preamp Purple Audio BIZ: Add some great color to your 500 rack, both literally and figuratively. The discrete 3-amplifier BIZ sounds truly unique. With separate input gain and output level, along with a dual mode that splits the signal between a pair of Class-A op-amps, the BIZ is capable of an incredibly wide-range of tone – and it delivers an awesome 75db of clean gain! The BIZ is truly hot. Hot, and purple.

Price: $725.00