Big Iron Passive Transformer Based Stereo Processor

Big Iron is a passive stereo transformer processor built to add weight, depth, and subtle harmonic character without adding active circuitry. At its core is a matched pair of Jensen JT-11-FLCF transformers, giving mixes, buses, and individual tracks a polished analog solidity while preserving clarity and transient detail. Designed and built by Analog Prairie.

True North Passive Transformer Based Stereo Processor

True North is a passive stereo transformer processor built around a pair of Hammond 1140-LU-B transformers. It brings a more textured, vintage-leaning character to mixes, buses, and individual tracks, adding weight and subtle harmonic color while keeping the signal path completely passive. Designed and built by Analog Prairie.

*No longer keep these on hand but a special order can be arranged. Materials can be acquired quickly.

Fire Breather Stereo Mix Igniter

Available soon!

Fire Breather is a passive stereo transformer mix processor designed to add weight, color, and analog character to your stereo bus, with up to 18 dB of passive voltage gain depending on the source equipment and load. Drive the transformers for more attitude, then use the Output Trim to bring the level back under control. Designed and built by Analog Prairie.

Sumpost 16×2 Core Summing Matrix

Sumpost is a 16x2 passive core summing matrix built around individual transformer windings that combine signals magnetically rather than through a conventional resistive bus alone. It adds weight, dimension, and a distinctly physical sense of cohesion as more channels are brought into the mix, while maintaining a fully passive signal path. Designed and built by Analog Prairie.