4-band EQ unit based on the eq section in the classical 1081 The class-AB equalizer circuit used in the EQ-81 MKII is similar to the eq section in the classic 1081 module, without the high and low... View more
Harrison 32EQ - classic Harrison console specs in a single '500' series rack space This 500 series module also includes the parametric, second order high-pass and low-pass filters made famous in the... View more
Single channel digitally controlled, analog driven EQ This "desktop" (and rackable) digitally controlled analog parametric EQ offers similar topology to vintage 1081/1083 models, but with welcome... View more
Dual channel digitally controlled, analog driven EQ This single-rack-space digitally controlled analog parametric EQ offers similar topology to vintage 1081/1083 models, but with welcome... View more
Single channel '500' series rack module pulse width modulated compressor/limiter The Great River PWM-501 uses a unique Pulse Width Modulator as the gain control element, delivering the speed of the... View more
The Gyraf Audio Gyratec X is a true tube stereo compressor based on the classic variable-mu principle This method - controlling the gain by altering quesient current in differential tube pairs - is... View more
Passive stereo equalizer, equipped with two different topologies for makeup gain and interfacing The filter itself consist of five bands - each with 11 switchable frequencies, continuous variable... View more
The G21 is kinda an elaboration on our G14 parallel-passive EQ - the parallel topology enables multi-band control without running into the traditional problems in multi-banding Use carefully - this... View more
Gyraf Audio G22 is an elaborated and dual'ified version of our venerable G10 vari-mu compressor This incarnation allows it to be dual-mono, while still keeping a backwards-compatibility "G10 mode"... View more
The Gyraf G23-S is our own original design Tilting-type Equalizer aimed mainly at mix and mastering for the situations where you have a mix that is already nearly-perfect balanced The recent -S... View more
The Gyraf Audio G24 is an entirely new type of stereo compressor - aimed at mix and mastering functions. "Passive/Aggressive" Compressor Similar to it's sister and predecessor, the G23 EQ, it's for... View more
EQ section from the 0011 in a 500 series package featuring an electronically balanced input and transformer balanced output with amp circuit, inductor based LF/MF EQ section with selectable LF and MF... View more
Our Frame 8 rack is handmade in the EU employing the same exact ISEP mechanical components used in the Series 80 consoles. Aluminium rails, guides, etc. This will ensure your vintage modules, as well... View more
The HA609A is a Class A Stereo/Duel Mono British-Spec Compressor and Limiter Heritage Audio's HA609A delivers punch, weight, and just the right amount of color to your mixes, buses,. or tracks.. With... View more
The Heritage Audio HA73EQ JR is a fully featured Line Input module for the 500 Series. It not only shares the 3-band Equalizer with his big brother, the 1073, but also shares the same transformer... View more
All tube Vari-Mu compressor with AMI and Cinemag transformers For years the industry has referred to this tube-based beast as something special, unique and even magic-like. The original Fairchild... View more
Dual channel all tube Vari-Mu compressor with AMI and Cinemag transformers For years the industry has referred to this tube-based beast as something special, unique and even magic-like. The original... View more
Analog passive EQ with seven frequency controlled with stepped rotary switches capable of a boost or cut of 8db in 1dB increments, or a flat response The MOTORCITY EQualizer is a completely analog,... View more
10 slot, professional, rack-mountable 500 series powered enclosure featuring Heritage Audio's On Slot Technology for maximum protection, filtering, and isolation to each channel While most 500-series... View more
The OST-4 V2.0 500 series enclosure is designed for racking any and all 500-series modules and devices, including 'double wide' modules and even the most demanding class-A and vacuum tube designs..... View more
Six slot, professional, rack-mountable 500 series powered enclosure featuring Heritage Audio's On Slot Technology for maximum protection, filtering, and isolation to each channel The OST-6 V2.0 500... View more
Analog mono equalizer based on the LANG PEQ-2 Program EQ with optical compression detection, all tube-based amplification stage, and transformer balanced input & output Finally, after over 6 decades,... View more
Let your mixes succeed with the new Heritage Audio Successor Master Bus Compressor The Heritage Audio Successor brings all these and then more. A fully Carnhill transformer coupled input and output... View more
Master-bus stereo asymptotic equalizer with M-S processing and 2-pole highpass and lowpass filters The little magic box. Baxandall equalizer's topology, introduced to the public by Peter Baxandall in... View more
Optical tube compressor with all tube-based amplification stage and transformer balanced Input & Output Optical Tube Compressors have been the choice of seasoned engineers and producers for recording... View more
Mastering limiter with ?Look Ahead? ability Our LAAL mastering limiter is absolutely exceptional in many ways. An innovative idea of detection and limiting process allowed us to achieve a new... View more
FET compressor in a 500-series module, relay bypass, 2:1 ratio, Slam Mode The 576 Blue Stripe is a revised version of the classic FET compressor. . What it is. The FET-type solution was first used... View more
Monophonic FET limiting amplifier, six Ratio settings, Slam Mode independent from the Ratio, adjustable Attack and Release The ALTER 500 is a FET compressor built in the 500 standard. The FET-type... View more
Mid/side processor with a dry/wet mixer in a 500-series module This machine will turn your favourite dual mono compressor into a parallel, Mid/Side compressor.. Overview. The IGS Bison 500 is a... View more
