The Burl B1D is the same as the B1 except that it has an all iron BX4 output transformer giving it a more terrifying rock tone. Single channel mic pre for 500-series. An all discrete transistor,... View more

The Electrodyne 501 is a two stage discrete transistor, transformer coupled preamp with active DI, using classic (1969 / 1970) design technology. Each amp stage is individually optimized for peak... View more

The BAE 312A module is a single channel mic preamp made using Avedis 1122 opamps for 500 series racks. Supplied with Jensen input and output transformers. Because there are no capacitors in the audio... View more

The 1272 module made by BAE is built to specifications to be used in original Neve consoles. BAE 1272 Module. 300 ohms or 1200 ohms transformer balanced input.

Elixir is a mic preamp for 500 series. Standing out from the crowd, the elixir offers exciting and vibrant tones in the 500 Series format. audio path quality. All discrete signal path using our... View more

The Burl B1 gets the best out of any microphone, whether it be dynamic, condenser or ribbon. The B1 come complete with both Gain and Level controls. Based on the API 500 series.

The Purple Audio Biz is a unique sounding, three amplifier, discrete microphone preamp module in 500 series. Designed to work in standard "500" racks.. The smooth Gain control helps you dial in the... View more

The Purple Audio Pants is a four op amp, differential mic preamp. The Pants uses a unique dual-bobbin input transformer from Cinemag unlike any other. The smooth Gain control helps you dial in the... View more

Single channel '500' series rack module classic '70s vintage circuit styling The MP-500NV is a professional quality microphone preamplifier designed to re-create the vintage sound characteristics of... View more

The Mono GAMA is the single-channel API 500 Series version of the Golden Age Microphone Amp, with all the capabilities, features, and quality of the original. The Shadow Hills Mono Gama is centered... View more

Single-channel microphone/line/instrument preamp for 500 Series The API 512c is a mic / line / instrument preamp, world famous for its ability to provide a low noise (-129 EIN) and unusually good... View more