When Roger Arrick founded Synthesizers.com in 1997, he set out to modernize the classic Moog modular format rather than reinvent it, and the Portable Systems line became the company's answer to musicians who wanted serious analog synthesis without being chained to a studio. These rigs arrived in 2000 as a direct response to a real problem: vintage Moog systems were either impossibly expensive or buried in studios, so Arrick designed cabinets that could actually travel while maintaining the large-format usability and feel that made Moog systems so intuitive to patch.
The Portable line comes in multiple configurations ranging from compact 11-space rigs up to massive 88-space systems, all built around the 5U Moog Modular form factor that Synthesizers.com helped standardize. Each system uses analog circuitry with a thoughtful signal architecture: outputs deliver full-strength 10V peak-to-peak signals while inputs feature attenuators, eliminating the need to patch through separate attenuator modules just to control signal levels between components. The cabinets house essential synthesis functions like voltage-controlled oscillators, filters, and amplifiers alongside more advanced modules such as sequencers, ring modulators, and quantizers. Power runs on standardized +/-15V and +5V supplies, and all modules use 1/4-inch jacks with consistent impedance standards that make patching intuitive across the entire system.
What set these systems apart in the modular community was Arrick's engineering philosophy: he deliberately avoided cutting-edge components in favor of proven, long-lasting parts like TL074 op-amps and 2N3904 transistors that wouldn't become obsolete and force redesigns down the road. The Portable Systems gained respect among serious modular enthusiasts for their build quality and the flexibility they offered, becoming a reference point for how the Moog standard could evolve. While Synthesizers.com has since changed ownership multiple times and the Portable line is no longer in production, these systems remain sought-after in the used market for musicians who want the hands-on immediacy of large-format analog synthesis with genuine portability.
