The EQ531T is a 3 bands tube equalizer plus High pass filter, built around a dual triode, adapted to the 500 series of API*.

The SK49 is a large diaphragm condenser tube microphone. The design was inspired by the legendary Neumann M49 with the addition of intermediary patterns and a switchable high pass filter.

The SK49 sounds fantastic, warm and clear on all sources.

The CP4500 is a Stereo bus compressor based on the design that was originally used in a legendary British console, adapted to the 500 series format of API*. It is famous for adding punch and glue to the mixes.

The DI503J is a triple mode Direct Box for instrument and a Re-Amp unit for the '500' format of API*.

The TS500 is an analog processor that recreates the sonic imprint of vintage tape recorders. It provides the roundness, the punch, the compression and the saturation of magnetic tape.

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The CP554 is a transformer coupled diode bridge compressor based on the design of legendary British consoles, adapted to the 500 series format.

The MP 512 is based on one discrete Op-Amp, one Cinemag input transformer and one Cinemag output transformer.

The LA502 is a soft knee, electro-optical compressor based on the LA2A/LA3A design, which we have adapted to the '500' series format of API*.

The PAD500 is a dual balanced line attenuator. It is used after a mic preamp or any effect that you want to drive hot without clipping your converters.

The MU524 is a Variable Mu tube compressor which, with the help of two transformers, provides a smooth and vintage sounding soft knee compression.

The EQP501 is a passive equalizer based on the classic PULTEC EQP 1A, adapted to the '500' format of API*.

The MC624 is similar to the monitor section of a mixing desk: it lets you select one out of six stereo audio sources, adjust the level and route it to one of four monitor outputs.

The MP566 is a dual-triode vacuum tube circuit preamplifier based on a design that has been used in several famous devices from the 50's, which has been adapted to the '500' format of API*.

The EQ250 is a 5 bands stereo parametric equalizer inspired by the revered Sontec MEP-250A, adapted to the 500 series format.

The CP5176 is a FET compressor based on the design that was originally used in the 1176 compressor, which has been adapted to the '500' format of API*.

The LA502T is a soft knee, electro-optical tube compressor based on the LA2A design, which we have adapted to the 500 series format.

True Grit is a tube saturation processor that allows for very soft and progressive saturation up to full overdrive.

The MP 599 is based on one SK99 discrete Op-Amp, one Lundahl input transformer and one Lundahl output transformer.

The EQ573-II is an parametric equalizer based on the design that was originally used in the Neve 1073 and 1084 modules, that has been adapted to the '500' format of API*.

The AB528 is a transformers coupled, class A mic preamp. The design, from the late 60's, is inspired by a legendary console, that was used at the most famous London studio by the greatest artists, such as the Beatles or Pink Floyd.

The MP566-II is the new improved version of the MP566 with high grade transformers and a new variable high pass filter. It is a dual-triode vacuum tube circuit preamplifier based on a design that was used in several famous devices from the 60's, which has been adapted to the '500' format of API*.

The REM624 is a remote control unit for the MC624 Monitor Controler.

It offers the same contols as the central unit (except headphones volume).

The SK501 is a single slot, 500 series compatible case and power supply.

The XT500 is an extension cable which lets you connect a 500 series module to your lunchbox while keeping it outside for easy setting or maintenance.

The SK25 and SK99 are discrete Op-Amps which are pin compatible with the API* 2520. They are low noise, high performance DOA's specially developed for audio applications.

The MP573 is a two stages, single ended class A preamp, based on the design that was originally used in the Neve 1290/1073 modules, that has been adapted to the 500 series of API.