Long recognised as a central component in superb yet cost-effective music systems, the integrated amplifier’s job has evolved substantially. As many music-lovers have migrated to digital sources, the integrated amplifier is required to be more versatile and agile. The RA-1572 is one of the best examples of melding classic analogue design with contemporary digital circuits to bring the full range of music sources to life with surpassing fidelity.
As is typical of Rotel amplifiers, the RA-1572’s circuitry draws on a high capacity power supply. Fundamental to the 1572’s extraordinary power capacity is a Rotel custom designed and in-house manufactured, oversized, toroidal transformer. This transformer provides an abundance of voltage and current for all operating stages. Furthermore, its toroidal shape helps prevent stray radiation patterns from corrupting audio signals as they pass through adjacent circuit stages. Subsequent power supply segments built with tight-tolerance parts including T-Network capacitors provide the exact voltage and current requirements to ensure stress-free signal reproduction.
The Class AB output stage uses discrete devices to ensure precise reproduction of all signals regardless of origin with virtually any loudspeaker. The power output, conservatively rated at a robust 120 watts per channel into 8 ohms, is substantial as it is a continuous “both channels driven simultaneously” rating – fully in keeping with real-world requirements and Rotel’s tradition of providing extraordinary value.
MODERN DIGITAL CIRCUITRY:
The RA-1572’s input section is substantially more flexible than that found in most integrated amplifiers. In recognition of the predominance of digital sources available today, the RA-1572 has a built-in, state of the art 32-bit/768kHz AKM digital-to-analogue converter (DAC) of the highest quality. The DAC and surrounding circuitry supports a vast array of source inputs including DSD capable PC-USB (32-bit/384kHz). A front panel USB input is provided for easy connection of a wide variety of music storage devices including Apple iPods, iPhones, and iPads. The Bluetooth input supports aptX for superior performance with compatible devices. In addition, two each coaxial (RCA) and optical (TOSlink) inputs provide easy connections for LPCM music sources including popular streaming devices. Importantly, it is possible to fix the level and set an auto-on option with digital inputs for use with devices that provide their own volume control for convenient “hands-off” use.
Analog inputs include a pair of balanced XLR connectors in addition to conventional RCA jacks.
A quality Rotel MM phono stage is included for vinyl lovers.
User conveniences include two 12-volt triggers to control on/off operation of other components. A highly visible VFD display for set-up, internet-based software updates, as well as RS232 and IP control capabilities allow the 1572 to integrate seamlessly with 3rd party systems. An infra-red remote control is also supplied for those of us with simpler needs!
Builds on the features of the hugely popular RA-1570
DSD capable 32-bit AKM DAC
aptX Bluetooth built-in
120 Watts x 2 Class AB power
MM Phono input
RS-232 and IP control