Rotel Stereo Preamps

RC-1572

http://www.rotel.com/product/rc-1572
Among many refinements, the RC-1572 utilizes relay switching for analog sources instead of an IC based switch to maintain the integrity of the signal path for RCA, phono and XLR inputs.

The RC-1572 stereo preamplifier is also extremely flexible. Four digital inputs (2 coax and 2 optical), plus the rear PC-USB handle digital sources up to 32/384 resolution. The 4 inputs are designed for sources such as TV set-top boxes, flat panel TVs or Blu-ray players for stunning playback. 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.The PC-USB input supports DSD signals. Integrated Bluetooth aptX is provided. Analog inputs include balanced XLR connectors, perfect for connecting the RCD-1572 via its XLR outputs, in addition to four pair of conventional RCA inputs. A moving magnet phono stage rounds out the source capability. XLR and single ended outputs are provided along with a mono subwoofer output, as are two 12-volt triggers to control on/off operation of an amplifier and/or other components. For custom integration, control options include RS232 on a standard DB9 connector, as well as an Ethernet port for IP control and software updates.
DIMENSIONS (W × H × D) 17″ × 3.9″ × 13.5″
POWER REQUIREMENTS 120V, 60Hz
POWER CONSUMPTION 35W
STANDBY POWER CONSUMPTION <0.5W
NET WEIGHT 7.4kg (16lbs.)
TOTAL HARMONIC DISTORTION (THD)(20Hz–20kHz) <0.004%
FREQUENCY RESPONSE
Line Level Inputs: 10Hz – 100kHz ±0.3dB
Digital Inputs: 20Hz – 20kHz ±0.5dB
Phono Input: 20Hz – 20kHz ±0.3dB
S/N RATIO (IHF “A” Weighted)
Line Level Inputs: 110dB
Digital Inputs: 100dB
Phono Input: 80dB
INTERMODULATION DISTORTION (60Hz:7kHz, 4:1) <0.004%
INPUT SENSITIVITY
Line Level Inputs (RCA): 200mV
Line Level Inputs (XLR): 300mV
Phono Input (MM): 3mV
INPUT IMPEDANCE
Line Level Inputs (RCA): 100kΩ
Line Level Inputs (XLR): 100kΩ
Digital Inputs: 75Ω
Phono Input (MM): 47kΩ
OUTPUT LEVEL
Unbalanced (RCA): 1V
Balanced (XLR): 2V
TONE CONTROLS ±10dB at 100Hz / 10kHz
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 32/384)*
*Driver Installation Required
DSD/DoP 1x, 2x

RC-1590

http://www.rotel.com/product/rc-1590 

The RC-1590 is fully feature-laden with Balanced XLR and Unbalanced RCA inputs and outputs, a TI precision volume control IC, a fixed volume line output, dual mono subwoofer outputs, digital outputs (Coax and Optical), digital inputs (3 Coax and 3 Optical), Aux, CD, and Tuner analog inputs, internal aptX Bluetooth (supports aptX and standard Bluetooth) with rear mounted external antenna, a front USB iPod with 2.1A charging input, and rear panel PC-USB 24-bit 192kHz input supporting DSD (Windows) and DoP (MAC computers DSD over PCM).

Other essential features include a remote control, 2 x 12-volt trigger outputs, a dimmable display, an automatic power off function (configurable), RS232 and IP control for automation system integration, internet based software updates, Rotel Link connection, a detachable IEC power cord, an external IR remote input, and a front mounted 3.5mm headphone output jack.
DIMENSIONS (W × H × D) 17″ × 5.7″ × 13.9″
POWER REQUIREMENTS 120V, 60Hz
POWER CONSUMPTION 45W
STANDBY POWER CONSUMPTION <0.5W
NET WEIGHT 9.2kg (20lbs.)
TOTAL HARMONIC DISTORTION (THD)(20Hz–20kHz) <0.002%
FREQUENCY RESPONSE
Line Level Inputs: 10Hz – 100kHz ±0.1dB
Digital Inputs: 20Hz – 20kHz ±0.5dB
Phono Input: 20Hz – 20kHz ±0.2dB
S/N RATIO (IHF “A” Weighted)
Line Level Inputs: 112dB
Digital Inputs: 108dB
Phono Input: 80dB
INPUT SENSITIVITY
Line Level Inputs (RCA): 150mV
Line Level Inputs (XLR): 250mV
Phono Input (MM): 2.5mV
INPUT IMPEDANCE
Line Level Inputs (RCA): 100kΩ
Line Level Inputs (XLR): 100kΩ
Digital Inputs: 75Ω
Phono Input (MM): 47kΩ
OUTPUT LEVEL
Unbalanced (RCA): 1V
Balanced (XLR): 2V
CHANNEL SEPARATION
Line Level Inputs: >75dB
Phono Input: >75dB
TONE CONTROLS ±10dB at 100Hz / 10kHz
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)*
*Driver Installation Required
DSD/DoP 1x, 2x