Integrated Amplifiers

RA-1570

The RA-1570 combines proven analogue design with sophisticated digital circuits to bring all of your sources to life with amazing fidelity.

Power2 x 120 Watts of robust Class AB power

USBFront panel USB for Apple iOS devices

TurntableMoving magnet phono input for turntable connection

BluetoothBluetooth dongle included

ICWolfson premium 24-bit/192kHz Digital to Analogue Converter

Engineered with care.

RA-1570 Internal View

 
Dimensions (W × H × D)
431 × 144 × 358mm
17" × 5.7" × 14"
 
Front Panel Height
3U / 132.6mm (5.2")
 
Power Requirements
230V, 50Hz
 
Power Consumption
400W
 
Standby Power Consumption
<0.5W
 
Net Weight
13kg (29lbs.)
 
BTU Rating (4Ω, 1/8th power)
728 BTU/h

Components

 
Continuous Power Output
120W/Ch (All channels driven, 8Ω)
 
Total Harmonic Distortion (THD)
(20Hz–20kHz) <0.03%
 
Frequency Response
Line Level Inputs: 10Hz - 100kHz +1, -3dB
Digital Inputs: 10Hz - 95kHz ±3dB
Phono Input: 20Hz - 20kHz ±0.5dB
 
S/N Ratio (IHF "A" Weighted)
Line Level Inputs: 100dB
Digital Inputs: 100dB
Phono Input: 80dB
Product Description 

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 RA-1570 is one of the best examples of melding classic analogue design with contemporary digital circuits to bring all of your sources  to life with surpassing fidelity.

As typical of Rotel amplifiers, 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 tight-tolerance 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 flexible than that found in most integrated amplifiers. In recognition of the growing popularity of digital sources, this amplifier 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 up to 24-bit/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 192kHz. Importantly, it is possible to fix the level on these sources for use with devices that provide their own volume control. Analogue 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 analogue 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.

More Specifications 
Intermodulation Distortion (60Hz:7kHz, 4:1)
<0.03%
 
Damping Factor
180
 
Speaker Impedance
4Ω minimum
 
Input Sensitivity
Line Level Inputs (RCA): 285mV
Line Level Inputs (XLR): 570mV
Phono Input (MM): 2.25mV
 
Input Impedance
Line Level Inputs (RCA): 100kΩ
Line Level Inputs (XLR): 50kΩ
Digital Inputs: 75Ω
Phono Input (MM): 68kΩ
 
Input Overload
Line Level Inputs: 4V
Phono Input: 30mV
 
Preout Level
1.2V
 
Output Impedance
470Ω
 
Tone Controls
±12dB at 100Hz / 10kHz
 
Decodable Front USB Formats
MP3, WAV, WMA, Ogg Vorbis (up to 48kHz 16-bit)
 
Coax/Optical Digital Input Signals
LPCM (Up to 24-bit/192kHz)
 
PC-USB
USB Audio Class 1 (up to 24/96)
USB Audio Class 2 (up to 24/192)
 

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