Rotel RC1572 Pre-Amplifier & RB1552 MKII Power Amplifier
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Rotel is a family-owned, 50-year-old business: its long-standing prestige has been earned through the passion and clinical accuracy delivered in the performance of their home theatre and hi-fi products. With a large audiophile following, Rotel is renowned amongst enthusiasts that appreciate the outstanding quality their products represent. The Rotel family today includes an international group of engineers, designers, music and movie enthusiasts, and professional audio business people from many countries including Japan, UK, USA, China and Korea.
Rotel continuously strives to make home entertainment electronics that compare favourably with products that cost many times their retail value, focusing on innovative technology and enjoyment of use, as well as excellent quality sound and vision. By being very selective with components and meticulous in circuit design, Rotel has maintained its impressive reputation, being recognised by critics around the globe as one of the best performance and best value audio visual manufacturers in the industry.
The heart of an uncompromising audiophile stereo “separates” system is the preamplifier. Separate components hold the promise of the best possible fidelity, since each device is optimised for its role in the sound reproduction chain. The new RC-1572 stereo preamplifier leverages the design of our flagship RC-1590 preamplifier including its 32 bit/768kHz AKM stereo digital-to-analogue converter to handle critical signal conversion. Among many refinements, the RC-1572 utilises 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.
Beneath the clean lines and user friendly fascia of the RC-1572 lies highly sophisticated engineering. Both analog and digital sources have been given equal consideration as today’s listener often has several digital sources, but may also enjoy legacy formats like vinyl LPs. A large toroidal transformer and regulated power supply ensures stable current and voltage requirements to all stages under dynamic conditions. Premium circuit components have been selected only after extensive listening evaluations. Careful routing of all low level signals has been practiced to ensure impressive signal to noise levels. The result is effortless musical dynamics, impressive detail and scale.
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. Analogue 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. In short, the RC-1572 is a tremendous value and the perfect upgrade for owners of older analogue-only preamplifiers.
Total Harmonic Distortion (20Hz-20kHz): < 0.004%
Intermodulation Distortion (60 Hz : 7 kHz, 4:1): < 0.004% at 1V output
Input Sensitivity / Impedance
Phono Input (MM): 2.5 mV / 47k ohms
Line Level Inputs (RCA):150 mV / 24k ohms
Line Level Inputs (XLR):300 mV / 50k ohms
Phono Input: 65 mV
Line Level Inputs: 4.3 V
Output Level / Impedance
Output (RCA): 1V / 100 ohms
Output (XLR): 2V / 100 ohms
Phono Input: 20 Hz-20k Hz, 0 +/- 0.3 dB
Line Level Inputs: 4 Hz-100k Hz, 0 +/- 0.3 dB
Bass: +/-10 dB at 100Hz
Treble: +/-10 dB at 10kHz
Signal to Noise Ratio (IHF “A” weighted)
Phono Input: 80 dB
Line Level Inputs: 110 dB
Frequency Response: 10Hz - 95k Hz (+/-3.0dB, Max)
Signal to Noise Ratio (IHF “A” weighted): 100 dB
Input Sensitivity/Impedance: 0 dBfs / 75 ohms
USB/iPod Digital Signals: WAV, MP3, WMA, AIFF (up to 48kHz 16 bit)
Coaxial/Optical Digital Signals: SPDIF LPCM (up to 192kHz 24 bit)
PC-USB: USB Audio Class 1 (up to 96kHz 24 bit)
Power Requirements: USA - 120 Volts, 60 Hz / EC - 230 Volts, 50 Hz
Power Consumption: 15 watts
Standby Power Consumption: < 0.5 watts
Dimensions (W x H x D): 431 x 99 x 320 mm
Front Panel Height:2U (88.1mm, 3 1/2 ins)
Weight (net): 7kg
The RB-1552MKII is a 120 watt per channel class A/B amplifier. It is engineered to be powerful and robust, yet able to extract every last nuance out of even the most complex musical score.
The RB-1552 MKII stereo amplifier has been engineered to provide high-resolution audio performance, yet it is very affordable, as has been the tradition with Rotel electronics for over 50 years.
Rotel engineering’s fanatical attention to detail means the sum is greater than the parts; this is what we call our Balanced Design Concept. Each aspect of design is carefully considered holistically to result in maximum audio performance, from the selection of an over-sized power supply featuring a highly efficient, low magnetic field toroidal transformer to multiple, high-current bipolar output transistors. Circuit topology is planned, implemented, evaluated, and adjusted to achieve optimum results. The RB-1552 MKII 120 watt Class A/B amplifier features independent left and right power rectification stages and decoupling, and is essentially a mono block design. Further evidence of design over-spec is in the selection of premium “slit-foil” capacitors, which provide plenty of reserve energy for extremely dynamic audio passages and are able to quickly replenish themselves due to the nature of their unique design. Input options are balanced XLR or unbalanced RCA connectors.
Power Configurations: 2 x 120 watts (20Hz-20kHz, <0.03%, 8 Ohms)
Watts/Channel: 120 watts, all channels driven, 8 ohm load, 20-20kHz
THD (20-20,000Hz) 8 Ohms, all channels driven: < 0.03%
IM Distortion: < 0.03%
Damping Factor (8 Ohms): 500
Input Impedance / Sensitivity
Unbalanced: 12k Ohms/1.5 volt
Balanced: 50k Ohms/2.5 volt
Frequency Response (+/-1dB): 4 - 100kHz (+0.5dB, -3dB)
S/N Ratio (IHF A): 120dB
Power Consumption: 400 watts
Dimensions (W x H x D): 431 x 144 x 340 mm
Front Panel Height: 3 U (5.25”)
Shipping Weight: 14.3 Kg
|Short Description||Take your Rotel for a spin! Buy any Rotel 15 Series integrated amp or pre-power amp combo and get a free Pro-Ject Audio Debut Recordmaster Turntable in Walnut, valued at $699! (RRP)|
|Product Name||Rotel RC1572 Pre-Amplifier & RB1552 MKII Power Amplifier|
|Model||Rotel RC1572 & RB1552 MKII|
|RMS Power @ 4 Ohms||Not Specified|
|RMS Power @ 8 Ohms||130 Watts|
|High Current Output||No|
|Speaker Outputs||2 Channel|
|Analogue Inputs||4 x line, 1 x MM phono, 1 x XLR Balanced,|
|Digital Inputs||Coaxial x 2, Optical, USB x 2|
|Amplifier Type||Class AB|