Jeff Rowland Model 535 Stereo Amplifier

A bridgeable power amplifier that delivers stunning dynamic realism and expressive refinement. Housed in a chassis milled from a solid block of aircraft-grade aluminum, the Model 535 features an innovative topology that epitomizes power and efficiency.

From a single Model 535 in stereo mode at the core of an intimate audio system, up to multiple bridged units powering a complex home theater setup, down to a bridged pair driving a sophisticated two-channel environment, the Model 535 delivers exquisite resolution, authority, and control to speakers of almost any size and any load.

Machined Aluminum Chassis

Precision-machined chassis, milled from a solid block of aircraft grade aluminum, provides exceptional thermal heat transfer/dissipation, RFI/ EMI shielding, resonance control, and minimizes micro-phonically induced microvibrations from any source.

Ceramic Circuit Boards

Critical audio circuits are implemented on mil-spec, multilayer, low dielectric constant, Rogers ultra-rigid ceramic circuit board substrate for extremely low energy retention and absorption. Large low impedance ground planes areas for extended internal star-grounding.

Balanced Topology

Inherent cancellation effects of balanced topology implemented throughout power and input/output circuits ensure reduced distortion and noise under dynamic signal conditions.

High-Precision Surface Mount Components

Extensive use of Lead (Pb)-free, low temperature coefficient, active and passive surface-mount components results in significantly smaller loop areas, reduced circuit capacitance and inductance, and introduces less noise than conventional leaded components.

Thin-Film Resistors

All resistors are low noise, 0.1% thin-film type for extremely low thermal noise which complement the low-noise characteristics of the active circuitry.

Teflon Insulated Wires

All signal carrying input and output wires are teflon insulated, for low dielectric energy storage, ensuring that each audio note naturally decays into the deeper silence of the music.

Transformer-Coupling and Isolation

Transformer coupled input circuitry provides universal component compatibility and virtually eliminates ground loop noise and RFI/ EMI. Transformer coupling ensures identical amplifier overall gain when using unbalanced input adapters.

Active Power Factor Correction

Power Factor Correction (PFC) integrated into the power supply reduces AC line harmonic noise pollution and increases AC line power utilization to 97%.

High-Efficiency Switch-Mode Power Supply

Highly efficient, compact, light weight, switch-mode power supply provides optimum voltage regulation for all circuits and operating conditions, and allows for quiet operation over a wide range of AC mains power sources.