For over 20 years, Jeff Rowland Design Group has produced many of the most widely acclaimed products in audio history including the legendary Model 1 Amplifiers. Today the torch has passed to such new designs as the Capri and Model 102 pre-power combination amplifiers. Jeff Rowland has earned numerous international awards for product design excellence and absolute amplification abilities.
The mantle of the legendary Model 1 has been handed over to the Corus Preamplifier, the Model 625 Stereo Amplifier and the Aeris DAC.
CORUS PREAMPLIFIER:
The Corus Stereo Preamplifier delivers the Jeff Rowland hallmark of a sensuous and grain free musicality, combined with astonishing transparency and low level resolution. A broad 3-dimensional sound stage materializes into the physical listening space, where instruments and vocalists assume the textured appearance of solid existence.
The preamplifier yields exceptional frequency extension and linearity, with magnificent bass definition, an extraordinarily complex exposure of harmonic structure, and a sweetly filigreed treble. The Corus yields amazingly nuanced low level detail and micro-dynamics, and outperforms every previous Rowland preamplifier with its transient speed, staggering authority, and breath-taking macro dynamics. Only the transcendent resolving musicality of the Criterion battery-powered Preamplifier ever yields an even superior listening experience.
Model 625 Stereo Amplifier:
Precision machined from a single block of non-resonant aircraft-grade aluminum, the Model 625 features a unique composite circuit architecture incorporating separate Class AB voltage and current gain blocks with no overall negative feedback and virtually free of internal and external EMI field contamination and mechanical vibration.
The Model 625 delivers a sensuous grain-free musicality of unparalleled transparency and low level resolution that blossom from a rich velvety silence and blossoms into the pure enjoyment of your listening experience.
The Aeris DAC:
Based upon an asynchronous buffer, voltage controlled crystal oscillators and a 24-bit D/A converter – under the precise control of a FPGA running proprietary algorithms – the Aeris DAC delivers bit perfect conversion and reduces total jitter to less than 10 picoseconds RMS from any input.
IsoSyncECS
Isolated Synchronous Error Correction System. Based upon an asynchronous buffer, voltage controlled crystal oscillators, and a 24 bit D/A converter – all under the precise control of an FPGA (Field Programmable Gate Array) running proprietary algorithms.
Bit Perfect and Virtually Jitter Free
Bit perfect conversion with total jitter output noise of less than 10 picoseconds RMS from any input – USB, TOSLINK, and SPDIF.
Multi-Stage Isolated Power Supply
Main power supply is isolated inside an external machined aluminum chassis. Eleven precision high-speed regulators provide low impedance and low noise “point of load” DC current to all analogue and digital circuits.
Isolated Audio and Digital Circuitry
Left and right channel audio output circuits, digital processing, and D/A conversion circuits are isolated within individual milled aluminum pockets resulting in exceptional EMI shielding, and thermal stabilization.
Volume Control
Wide range level control of outputs permit direct connection to power amplifiers.
Driver-Free Operation
The USB interface requires no additional drivers to install or maintain/ update.
Cross-Platform
The USB interface is plug-n-play with all operating systems, including PC, Mac, or Linux.
Machined Aluminum Chassis
Precision-machined chassis milled from a solid block of aircraft grade 6061-T6 aluminum, provides exceptional thermal stability, RFI/EMI shielding, and resonance control.
6-Layer Circuit Boards
Multi-layer circuit boards provide extremely low impedance ground and power distribution for remarkably low digital noise contamination.
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.
Transformer Coupled Outputs
Transformer balanced XLR line outputs provide outstanding output common-mode noise rejection, eliminate potential ground loops, and ensure compatibility with other equipment.
Output Connectors
Rhodium / Teflon Cardas output connectors for both balanced and unbalanced outputs preserve maximum audio signal integrity. Remote Control Allows remote control of volume, mute, standby, and input selection
Major innovations such as true differential mode balanced circuitry, transformer coupling, remote controlled preamplification and battery power supplies are prime examples of what has established Jeff Rowland Design as a market leader.
Such dedication carries with it the implicit responsibility of a wholly uncompromising approach to audio design. At Jeff Rowland Design Group, pride of craftsmanship shares equal footing with sonic innovation. The result is a product line that offers unrivaled musical revelation packaged in chassis designs of unparalleled beauty.
For the full range of Jeff Rowland products, please visit the link below.