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

Rotel Amplifiers


http://www.rotel.com/product/rb-1552-mkii

RB-1552 MkII is built upon the same platform as the RB-1582 MkII with only a slightly smaller power output capability at 2 x 130 Watts. The RB-1552 MkII is a 130 Watt per channel class AB amplifier.

Notable features of the amplifier include independent left and right power rectification stages and decoupling. The layout is essentially a mono block design. Input options are balanced XLR or unbalanced RCA connectors.

DIMENSIONS (W × H × D) 17″ × 5.7″ × 13.4″
POWER CONSUMPTION 400W
STANDBY POWER CONSUMPTION 0.5W
NET WEIGHT12.4kg (27lbs.)
CONTINUOUS POWER OUTPUT 130W/Ch (All channels driven, 8Ω)
TOTAL HARMONIC DISTORTION (THD)(20Hz–20kHz) <0.03%
FREQUENCY RESPONSE 10Hz – 100kHz ±0.5dB
SPEAKER IMPEDANCE 4Ω minimum
INPUT IMPEDANCE
Line Level Inputs (RCA): 12kΩ
Line Level Inputs (XLR): 100kΩ

RB-1572

http://www.rotel.com/product/rb-1572

DIMENSIONS (W × H × D) 17″ × 3.9″ × 13.4″
POWER CONSUMPTION 280W
STANDBY POWER CONSUMPTION 5W
NET WEIGHT 7.8kg (17lbs.)
CONTINUOUS POWER OUTPUT 250W/Ch (All channels driven, 8Ω)
TOTAL HARMONIC DISTORTION (THD)(20Hz–20kHz) <0.03%
FREQUENCY RESPONSE 10Hz – 80kHz ±1dB
S/N RATIO (IHF “A” Weighted) 109dB GAIN27.1dB
SPEAKER IMPEDANCE 4Ω minimum
INPUT SENSITIVITY 1.25V
INPUT IMPEDANCE 8.3kΩ

RB-1582 Mk II

http://www.rotel.com/product/rb-1582-mkii
Rotel’s next largest stereo amplifier at 200 Watts per channel.

The RB-1582 MkII’s high-end performance begins with an extremely large toroidal transformer combined with a total of 60,000µF storage capacity in special “slit foil” capacitors to provide completely stable power to the output stage. Both left and right channel construction are laid out in a mono block design (after the toroidal transformer) and all grounding is terminated in a star pattern on a copper grounding plate to ensure low signal to noise. The output stage is a discrete design that consists of 10 high current bipolar transistors per channel. Input options consist of both balanced XLR and unbalanced RCA connectors.

DIMENSIONS (W × H × D) 17″ × 5.7″ × 16″
POWER CONSUMPTION 550W
STANDBY POWER CONSUMPTION 0.5W
NET WEIGHT 17.6kg (39lbs.)
CONTINUOUS POWER OUTPUT 200W/Ch (All channels driven, 8Ω)
TOTAL HARMONIC DISTORTION (THD)(20Hz–20kHz) <0.03%
FREQUENCY RESPONSE10Hz – 100kHz ±0.5dB
S/N RATIO (IHF “A” Weighted) 116dB
GAIN RCA: 26.5dBXLR: 22.5dB
SPEAKER IMPEDANCE 4Ω minimum
INPUT IMPEDANCE
Line Level Inputs (RCA): 12kΩ
Line Level Inputs (XLR): 100kΩ

RB-1590

http://www.rotel.com/product/rb-1590 
The RB-1590 is at the top of its class as a 2 x 350 Watts stereo amplifier with dual toroidal transformers and special slit foil capacitors.

Rotel’s new Class AB stereo power amplifier is rated at 350 Watts per channel into 8 ohms both channels driven.  The capabilities of this amplifier begin with a solid foundation consisting of twin massive toroidal transformers custom made by Rotel. These transformers are just part of a rock-solid power supply that includes eight special British made BHC capacitors, known for their low loss and quick response times.

Features include: XLR Balanced and RCA input connections, two pair of 5-way speaker binding posts, 12-volt trigger control, thermal protection circuitry, overcurrent, over-voltage protection circuitry, dual staged power on relay to reduce surge current and extend longevity, and a detachable IEC power cord all in a 5U chassis.

DIMENSIONS (W × H × D) 17″ × 9.75″ × 17.9″
POWER CONSUMPTION 800W
STANDBY POWER CONSUMPTION 0.5W
NET WEIGHT 38.1kg (84lbs.)
CONTINUOUS POWER OUTPUT 350W/Ch (All channels driven, 8Ω)
TOTAL HARMONIC DISTORTION (THD)(20Hz–20kHz) <0.03%
FREQUENCY RESPONSE10Hz – 100kHz ±0.5dB
S/N RATIO (IHF “A” Weighted) 120dB
GAIN RCA: 27.5dBXLR: 23.5dB
INTERMODULATION DISTORTION (60Hz:7kHz, 4:1) <0.03%
SPEAKER IMPEDANCE 4Ω minimum
INPUT IMPEDANCE
Line Level Inputs (RCA): 12kΩ
Line Level Inputs (XLR): 100kΩ

(Integrated Amplifiers on next page)

Emotiva Amplifiers


XPA-1 DIFFERENTIAL REFERENCE CLASS A/AB MONOBLOCK POWER AMPLIFIER
 https://emotiva.com/products/amplifiers/xpa-1
Fully discrete, fully balanced, Differential Reference™ design
Switchable Class A and Class A/B operating modes
Massive, high current toroidal power supply
Advanced microprocessor operating system which protects the amplifier from all fault conditions.
Balanced and unbalanced inputs.
Trigger input and output.
Precision blue LED power meter with switchable modes, dimmable or defeatable.
Machined, gold plated, unbalanced RCA input .
Heavy duty, gold plated, clear jacketed audiophile speaker binding posts.
Soft-touch power switch.
Solid milled aluminum faceplate.
Automatic 120/230 AC voltage detection and switching
Topology: fully balanced, fully discrete, quad differential, ultra high current, short signal path selectable Class A/AB
Number of channels: 1
Power output (0.1% THD):
1,000 watts RMS @ 4 ohms
600 watts RMS @ 8 ohms
Rated power bandwidth: 20 Hz – 20 kHz +/- 0.07dB
Minimum Recommended Load: 4 ohms
Frequency response: (-1 dB): 10Hz to 80kHz
THD+N: <0.01%
Signal to Noise Ratio:
1 watt: > 89 dB
Full power: > 117 dB
Damping Factor: >500 into 8 ohms
Power Supply: 1,200VA toroidal transformer, 120,000uF filter capacitance
Gain: 29 dB
Input Impedance:
33 kohms (balanced)
23.5 kohms (unbalanced)
Power Requirements: 115 VAC or 230 VAC +/- 10% @ 50/60 Hz (automatically switched)
Size:
unboxed: 17” wide x 7 3/4” high x 19” deep
Weight: 73 lbs

(Next page XPA Gen3 MODULAR AMPLIFIER SYSTEM)