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RA-1570
Integrated Amplifier
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Long recognized as a central component in superb
yet cost-effective music systems, the integrated amplier’s
job has evolved substantially as many music-lovers have
migrated to digital sources. The RA-1570 is one of the
best examples of melding classic analog design with
contemporary digital circuits to bring all of your sources
to life with surpassing delity.
As typical of Rotel ampliers, the RA-1570’s circuitry
draws on a high capacity power supply based on
a Rotel custom designed and in-house manufactured
oversized toroidal transformer. In addition to providing
an abundance of voltage and current for all operating
stages, the transformer’s toroidal shape helps prevent
stray radiation patterns from corrupting audio signals
as they pass through adjacent circuit stages.
Subsequent power supply segments built with tighttolerance parts including T-Network capacitors provide
the exact voltage and current requirements to ensure
stress-free signal reproduction.
The RA-1570’s input section is substantially more
exible than that found in most integrated ampliers.
In recognition of the growing popularity of digital sources,
this amplier provides a front panel USB input for easy
connection of a wide variety of music storage devices
including Apple iPods, iPhones, and iPads. A rear
panel asynchronous PC-USB input supporting les up
to 24bit/192kHz is also provided. In addition, two each
coaxial (RCA) and optical (TOSlink) inputs provide easy
connections for LPCM music sources including popular
streaming devices with up to 24-bit word lengths sampled
at 192 kHz. Importantly, it is possible to x the level on
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RA-1570
Integrated Amplifier
these sources for use with devices that provide their
own volume control. Analog inputs include a pair of
balanced XLR connectors in addition to conventional
RCA jacks.
A Wolfson WM8740 stereo D/A converter handles
critical conversion from digital data to continuous
analog waveforms.
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,
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.
User conveniences include separate pre-out/main-in
connectors, a highly visible VFD display for set-up,
and a precisely calibrated electronic volume control.
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SPECIFICATIONS
RA-1570
Integrated Amplifier
Continuous Power Output
(20Hz – 20kHz, < 0.03%, 8 ohms)
Total Harmonic Distortion
(20Hz-20kHz)
Intermodulation Distortion
(60Hz : 7kHz, 4:1)
Frequency Response
Phono Input
Line Level Inputs
Damping Factor
(20Hz-20kHz, 8 ohms)
Input Sensitivity / Impedance
Phono Input (MM)
Line Level Inputs (RCA)
Line Level Inputs (Balanced)
Input Overload
Phono Input
Line Level Inputs
Preamplier Output /
Impedance
Signal to Noise Ratio
(IHF “A” weighted)
Phono Input
Line Level Inputs
120 watts/channel
< 0.03% at rated power,
1/2 power, or 1 watt
< 0.03% at rated power,
1/2 power or 1 watt
20Hz-20kHz (±0.5 dB)
10Hz-100kHz (+1, –3 dB)
180
2.25mV / 68k ohms
285mV / 100k ohms
570mV / 100k ohms
30mV
4V
1.5V / 470 ohms
80 dB
100 dB
Digital Section
Frequency Response
Signal to Noise Ratio
(IHF ”A” weighted)
Input Sensitivity/Impedance
Preout Level/Impedance
USB/iPod
Coaxial/Optical Digital Signals
PC-USB
PC-USB File Decoding
Power Requirements
USA
EC
Power Consumption
Standby Power Consumption
Dimensions (W x H x D)
Front Panel Height
Weight (net)
®
Digital Signals
10Hz - 95kHz (±3.0 dB, Max)
100 dB
0 dBFs/75 ohms
1.2 V/470 ohms (at -20 dB)
AIFF, AAC (m4a), WAV, MP3, WMA
(up to 48kHz 16 bit)
SPDIF LPCM
(up to 192kHz 24 bit)
USB Audio Class 1.0 (up to 24 bit/96kHz)
USB Audio Class 2.0 (up to 24 bit/192kHz)*
*Driver installation required
Plays all le types supported by PC
software player up to 24bit 192kHz
120 volts, 60Hz
230 volts, 50Hz
400 watts
< 0.5 watts
431 x 144 x 358mm
17 x 5 7/8 x 14 in
3U / 132.6mm / 5 1/4 in
13kg, 28.7 lb
Rotel of America
54 Concord St.
N. Reading, MA 01864 USA
T +1 978 664 3820
F +1 978 664 4109
www.rotel.com
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