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Sincere thanks for your purchase of the Relentless Preamplifier. We design and build
Relentless level components for the truly discriminating listener. Incorporating the
most sophisticated circuit topology and in a boldly elegant yet functional structure, the
Relentless Preamplifier is an all-out assault on the preamplifier category.
The preamplifier plays a critical role in musical playback: the point in the reproduction
stage when the music signal is particularly susceptible to compromise through noise
and distortion. The use of three separate chassis in the design of the Relentless
Preamplifier—a dedicated audio chassis for each channel separated by a power supply/
control section—addresses these challenges and brings other benefits besides. This
larger footprint provides the space required to fully exploit the FET-style front end
pioneered in the Momentum HD Preamplifier. This new circuitry stage as executed in the
Relentless Preamplifier reveals a level of detail and musicality not previously achieved.
Operationally, the Relentless Preamplifier is our first two-source/two-zone preamplifier,
allowing two different sources to be played simultaneously in different parts of your
home. The Relentless Preamplifier is also the first D’Agostino preamplifier to offer an
optional Digital Streaming Module (DSM), housed in the power supply/control chassis
and completely isolated from the analog circuitry.
As a part of the digital streaming capabilities, Tidal, Qobuz, and Spotify subscription
services are available. With appropriately encoded music files, MQA decoding is
standard. Customized apps for iOS devices provide easy control of music collections,
streaming content, and unit control. Roon Music management is also available as an
alternative music management program.
Importantly, the Relentless Preamplifier builds on decades of experience designing and
manufacturing the highest-performing audio products, combining the very finest and
most advanced parts with the same labor-intensive, hand-crafted construction we have
used since the company’s inception. Our staff of dedicated craftsmen and technicians
work diligently to guarantee that every Relentless Preamplifier tests and meets the
stringent specifications my engineering team have set for electrical, mechanical, and
finish criteria.
I hope you find that your Relentless Preamplifier delivers the most spectacular sound
quality you’ve ever experienced in your home. And I hope your eyes enjoy its singular,
elegant design and impeccable craftsmanship as much as your ears enjoy hearing it.
Sincerely,
A NOTE FROM DAN D’AGOSTINO
Founder and Chief Designer of Dan D’Agostino Master Audio Systems
Summary of Contents for Relentless
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