Description: Experience high-quality sound with the Rotel RB-1590 350W 2-Ch Stereo Power Amplifier. This black amplifier is compatible with Rotel brand and chipset manufacturer. It has stereo L/R RCA and XLR audio inputs, with four outputs including raw cable speaker jacks and banana speaker jacks. The amplifier class is AB, with a serial number of SN: FR012282251024062. This power amplifier is perfect for home audio and TV, video & home audio. It comes with a 5-year manufacturer warranty when brand new and is a wired connectivity item. The unit quantity is one, with two channels and 350W power. The product line is RB-1590, and it is a great addition to any audio setup. The Rotel RC-1590 preamplifier offers a built in 32 bit, 768 kHz DAC capable of DSD and DOP decoding, 6 digital inputs, 2 USB inputs (one with iOS device capability), balanced and single ended analog inputs, configurable home theater passthrough and Bluetooth streaming. That’s a load of features. In addition, it sounds exceptional. The massive RB-1590 power amplifier can deliver 350 WPC into an 8 ohm load, but still has plenty of ability to reveal fine detail and subtle tonal character. Together, they delivered one of the best soundstages I’ve heard in my room with my Gallo Reference 3.5 loudspeakers. Highlights Rotel Rotel RC1590 Preamplifier and RB1590 Power Amplifier The RC-1590 has loads of features normally reserved for surround sound processors not audiophile preamps.The built in AKM 32 bit, 768 kHz DAC sounds every bit as good as my Oppo BDP-105.The reconfigurable home theater passthrough option on the RC-1590 is very helpful in integrating the preamp into a home theater system. Any input can be set to fixed gain to allow the left and right channels from a surround sound processor to be sent through the stereo preamp unchanged to the power amp.The RB-1590 amplifier is massively built. It delivers 350 WPC into 8 ohms, both channels driven. This is enough oomph to power almost any speaker in almost any room.The measured performance on the bench was without fault. Introduction Rotel is a company well known to audio enthusiasts that’s been around for a long time. Since the 1960’s in fact. They were one of the first (if not the first) high end audio company to use the model of designing their own components, but having them manufactured overseas. This has always positioned them as a value leader. ROTEL PREAMPLIFIER AND POWER AMPLIFIER REVIEW SPECIFICATIONS RB-1590 Power Amplifier Continuous Power Output: 350W/Ch (all channels driven, 8Ω) Total Harmonic Distortion (THD): (20Hz–20kHz) <0.03% Frequency Response: 10Hz – 100kHz ±0.5dB S/N Ratio (IHF “A” Weighted): 120dB Gain: RCA: 27.5dB, XLR: 23.5dB Dimensions: 9.75″ H x 17″ W x 19.9″ D Weight: 84 Pounds Power Requirements: 120V, 60Hz Power Consumption: 800W Standby Power Consumption: 0.5W MSRP: $4000.00 USD brand new RC-1590 Preamplifier 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 Input Overload: Line Level Inputs: 4V, Phono Input: 30mV 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) MSRP: $1,749 USD Company: Rotel SECRETS Tags: Rotel, Preamplifier, Power Amplifier, Power Amp Reviews, Preamp Reviews Rotel’s new preamp and power amp combo, the RB-1590 and RC-1590, offer up very impressive specifications for a modest asking price. In particular, the RC-1590 preamp is loaded with features most every sub-$2000 preamp could only dream of. The RB-1590 amplifier offers 350WPC of class AB power for about $4000. But, as we all know, features and specifications are worth only the paper they’re printed on. What matters is how the components perform in the listening room. After spending some time with the RB and RC 1590, I was very impressed. I tested these components as a matched pair, so this review will be about their sound together. I did not get a chance to test each one separately. Design We’ll start with the RC-1590 preamplifier. This is certainly not what you’d call a “purist” preamp. It has pretty much every feature you could think of, some of which you’d expect to find in a home theater surround sound processor, not an audiophile preamp. The core of the RC-1590’s design rests on two completely separate power supplies for the digital and analog parts of the unit. The analog side offers both balanced and single ended inputs and outputs. There are three single ended and one balanced analog input plus a moving magnet phono input, along with two single ended and balanced preamp outputs. In addition, the RC-1590 has a single ended line output and two single ended mono subwoofer outputs. This is a fine complement of inputs and outputs for a preamp but it doesn’t end there. In addition to analog preamp functions, the RC-1590 has an internal DAC based on an AKM 32 bit 768 kHz chip, although inputs are limited to 24 bit, 192 kHz. There are three coaxial and three toslink optical inputs as well as two USB audio inputs that operate up to 192 kHz, 24 bit. A rear panel USB-B connector is designed for most all USB audio devices, while the front panel USB-A connector is designed to work Apple iOS devices. The rear panel USB also accepts both DSD and DOP audio in 1x and 2x modes. There’s even an integrated Bluetooth dongle that allows you to stream audio to the RC-1590 over Bluetooth using either traditional Bluetooth audio or APTX streaming. There are bypassable tone controls and balance control. Any input can also be set to fixed gain, disabling the volume knob for that input. This allows any input to be set up as a home theater pass-through for use with a separate surround sound processor or with any other volume controlled source such as Sonos®. Since this is how my system is set up, this was a particularly nice feature to have. An Ethernet jack on the back allows the unit to be connected to the network for firmware updates and automation system integration, but no audio files can be streamed over this connection. The build quality and feel of the preamp was quite nice for the price. The case itself was the typical stamped steel you’d normally find on a piece of consumer audio equipment, but the front panel and quality of the controls was very nice. The RB-1590 amplifier is significantly simpler than the preamp. The cosmetic design is similar, but the RB-1590 is a very heavy and solidly built amplifier. The amp will deliver 350 WPC into an 8 ohm load with both channels driven. That’s quite a lot of power for a stereo amplifier. It operates in class AB mode, as you’d expect for this sort of power rating. The amp is not completely dual mono inside, but close. There are separate toroidal transformers for each channel, but each side of the amp does share some power supply components. There are both single ended and balanced inputs available, dual 5-way binding post outputs that are very solid, and 12V trigger inputs and outputs for remote turn on. While the amp does have balanced inputs, it is not a fully balanced design end to end (this is also true of the RC-1590 preamp). In Use I set up the Rotel pair in my system together and allowed them to break in on casual TV watching duty for a while before testing. I did not test the components separately, only as a pair. Most of the time the preamp was fed with my Oppo BDP-105 player used as a USB DAC with Pure Music audio player software. I did try out the internal DAC, but most of my listening was done using the RC-1590 as a traditional preamp. The first main impression I got when listening to the Rotel pair was that of space. The soundstage on most every album I played was significantly wider, taller and deeper than with my normal components (an Emotiva RSP-1 preamp and a NewClear NC-1000L amplifier). From combo jazz to electronica, the soundstage reached a good yard left and right from my Gallo Reference 3.5s, with soundstage height up towards the ceiling. The depth was certainly recording dependent but on good recordings like Jon Faddis’ Remembrances in 24 bit 96 kHz, the soundstage seemed to go well past the back wall of the listening room. This is a hard thing for an audio system to do. A lot needs to go right for all those spatial cues to make it through to your brain, so components that can do it tend to have many other redeeming qualities. The Rotel pair did an exceptional job of extracting detail out of recordings, without being too harsh and revealing of faults. Both micro and macrodynamics were excellent. The big power of the RB-1590 had no problem controlling the bottom end of the Gallo Reference 3.5s in a way very similar to the 500WPC NewClear NC1000L I typically use. The bass performance gave up nothing compared to my normal equipment, but didn’t seem to be any better than my usual system. Microdynamics I think were improved a bit. Some recordings I remember sounding a bit flat and lifeless were more engaging and enjoyable. I usually associate the “aliveness” of a recording with microdynamics. Those small, subtle changes in loudness are one of the main things that make a recording sound exciting and alive as opposed to flat and boring for me. As with my normal system, the timbre of the Rotel pair was quite neutral. No tube like warmth present, but no glare or harshness either. When I listened to the built in DAC, I was hard pressed to hear any real difference between the Oppo BDP-105 (which uses a well-regarded Sabre 32 bit differential DAC chipset). This is actually pretty high praise, as the BDP-105 is one of the best USB DACs I’ve heard priced around $1000. I think the bottom line is that the built in DAC of the RC-1590 is very good, and you’ll have to spend considerably more than $1000 to do significantly better. This makes the RC-1590 an even better bargain. You get a preamp with excellent sound quality loaded with features, and very good DAC for $1750. I can’t think of any other preamp or preamp+DAC combo that can offer the same for even close to that price. On the Bench Measurements were performed with a M-Audio Profire 610 Firewire sound interface and Spectra Plus FFT analysis software. I drove the RC-1590 using an analog input, so the results you see here do not include any effect of the built in DAC. The RB-1590 was measured using an 8 ohm power resistor as the load. The signal level used to drive the amp resulted in an output power of about 40W into the 8 ohm load. This was necessary to keep the voltage across the power resistor within the range of the Profire 610’s inputs. If I tried to run the amp at any significantly higher power, the input of the sound interface overloaded. Still, this is a reasonable test of the amplifier performance since the average power output when playing music (even pretty loud) is only a few watts. Once again, we’ll start with the RC-1590 preamp. I measured total harmonic distortion plus noise at 60 Hz, 1 kHz and 10 kHz. Distortion levels are quite low, near that of the sound interface itself at around 0.01% for each tone. The dominant harmonic is the 3rd harmonic, with odd order harmonics decreasing at higher frequencies, although power exists out to very high harmonic order. Intermodulation distortion, measured with 60 Hz + 6 kHz tones was a very low 0.0085%. THD+N as a function of frequency shows measurements that make sense with the spot checks above. The level is just below 0.01% from 20 Hz past 20 kHz before it starts to rise (an effect of the sound interface, not the preamp). Frequency response is flat as a board as expected all the way to the limit of the sound interface. I performed the same suite of tests with the RB-1590 amplifier, but with the amp driving an 8 ohm power resistor. The sound interface was wired in parallel with the power resistor using clip leads. THD+N was only slightly higher at 40 W power delivery than the preamp, which is a very good result. Odd harmonics once again dominated as expected from a push-pull amp, but even harmonics were not completely absent like they were in the preamp. The THD+N versus frequency plot shows slightly higher numbers than the spot check but still a very low 0.03% from 20 Hz to over 20 kHz. Intermodulation distortion was even lower than the preamp at 0.006%. Again, frequency response was ruler flat to the limit of the sound interface. In all cases, the measured performance of the Rotel gear was without fault. Most all the measurements you see here are actually measurements of my tools, not of the Rotel equipment. Conclusions For the money, you’d be hard pressed to find a better sounding, more fully featured preamp and power amp combo than the Rotel RB-1590 and RC-1590. The preamp in particular is loaded with useful and uncommon features that make it as versatile as they come. The RB-1590 power amp has lots of power capable of controlling virtually any loudspeaker, while still being able to deliver a subtle, detailed presentation. The soundstaging performance of the pair was excellent, amongst the best I’ve heard in my room with my loudspeakers. I would not hesitate to recommend this combo for anyone looking to spend about $5000 to $7000 on a complete set of stereo audio electronics. THE ROTEL RB-1590 AND RC-1590 AMPLIFIER AND PREAMPLIFIER sound fantastic, and are excellent values for their price point. Likes Lots of useful features not usually found on a high end 2-channel preampVery good built in DACBuilt in phono stageEnormous soundstage; wide and tallVery well built, powerful amplifierVery nice build quality for the priceExcellent valueMSRP $4000 Stereo AmplifierRC-1590 and RB-1590 named “Best of 2015” Our new preamplifier and power amplifier reference system was recently named “Best of 2015” by Hi-Fi News in the U.K.. The duo received high praise for it's superb sound, build quality and value. Some of the review highlights include: "Both preamp and power amp are solid, neatly turned-out and have controls with a precise and well-engineered feel. And as you'll see from the internal shots on these pages, both also have a clear, logical layout, and use high-quality components" "The detail on offer here is always impressive, particularly in the way in which ambience and the size and acoustic character of a recording venue is conveyed - and especially so with higher resolution files. It just goes to show that this heavyweight amplification isn't all about 'going loud', but rather it has refinement and clarity to match its muscle." "It does a fine job of delivering a wide range of music with detail and excitement intact. That Rotel has managed to offer all this for very sensible money, along with wide-ranging input flexibility and fuss-free behaviour, is a tribute to its design and manufacturing."Blog Category Product Related Posts Posted by RotelHifi Stereo Amplifier SilverBlackBackVideoRB-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. 2 x 350 Watts of robust power Class AB amplifier design Massive power supply using Dual Toroidal Transformers High quality slit foil capacitors made in Britain Balanced XLR inputsRB-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.Product Description Power - refined, detailed, and plenty of it. Rotel’s new Class AB stereo power amplifier is rated at 350 Watts per channel into 8 ohms both channels driven. That is a lot of power, but larger listening rooms or less sensitive loudspeaker designs require it to bring out the best possible performance and attain realistic audio dynamics. The impressive 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. These components will continue to supply all of the voltage and current requirements needed, even under the most difficult load conditions. But power unrefined has never been a Rotel design goal. Every aspect of circuit design has been carefully considered and each component has been rigorously selected after extensive listening sessions. The circuit topography has been laid out in a true monoblock design, ensuring maximum signal separation and improved stereo imaging. 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 with included rack ears. The RB-1590 has been designed for the most discerning audio enthusiast and will provide the highest levels of audio performance. Product Description Power - refined, detailed, and plenty of it. Rotel’s new Class AB stereo power amplifier is rated at 350 Watts per channel into 8 ohms both channels driven. That is a lot of power, but larger listening rooms or less sensitive loudspeaker designs require it to bring out the best possible performance and attain realistic audio dynamics. The impressive 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. These components will continue to supply all of the voltage and current requirements needed, even under the most difficult load conditions. But power unrefined has never been a Rotel design goal. Every aspect of circuit design has been carefully considered and each component has been rigorously selected after extensive listening sessions. The circuit topography has been laid out in a true monoblock design, ensuring maximum signal separation and improved stereo imaging. 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 with included rack ears. The RB-1590 has been designed for the most discerning audio enthusiast and will provide the highest levels of audio performance.More Specifications Intermodulation Distortion (60 Hz : 7k Hz, 4:1)< 0.03% Damping Factor300 Speaker Impedance4 Ω minimum Input SensitivityLine Level Inputs (RCA): 2.2 VLine Level Inputs (XLR): 3.5 V Input ImpedanceLine Level Inputs (RCA): 12k ΩLine Level Inputs (XLR): 100k Ω Channel Separation> 50 dB 2 x 350 Watts of robust power Class AB amplifier design Massive power supply using Dual Toroidal Transformers High quality slit foil capacitors made in Britain Balanced XLR inputsEngineered with care. Dimensions (W × H × D)431 × 237 × 454 mm 17" × 9.75" × 17.9" Front Panel Height5U / 221 mm (8.75") Power Requirements120 V, 60 Hz Power Consumption800 W Standby Power Consumption0.5 W Net Weight38.1 kg (84 lbs.) BTU Rating (4 Ω, 1/8th power)2100 BTU/h Power Output350 W/Ch (8 Ω)648 W/Ch (4 Ω) Total Harmonic Distortion (THD)(20 Hz – 20k Hz) < 0.03% Frequency Response10 Hz - 100k Hz, ± 0.5 dB S/N Ratio (IHF "A" Weighted) 120 dB GainRCA: 27.5 dBXLR: 23.5 dB Product Reviews Secrets - Recommended Gear - Feb. 2022 HomeTheaterReview.com - Mar. 2016 Audio Video Revolution - Feb. 2016 Secrets of Home Theater and High Fidelity - Jan. 2016 AVSForum - Jan. 2016 Technofile.com - Nov. 2015 TheaterByte.com - Sept. 2015Rotel RB-1590 SEEN ELSEWHERE FOR 2.9K PRE-OWNED (below) $4,300.00 Original price was: $4,300.00.$2,899.95 Current price is: $2,899.95. 2 x 350 Watts Stereo Amplifier Rotel RB-1590 Stereo Power Amplifier Power amplifiers are the audio workhorses that provide the final link between signal sources, preamplifiers, and loudspeakers. However, reviewing power amplifiers often generates the excitement of kissing your kid sister on her forehead. After all, amps seem to have a very simple job: feed the speakers enough power to make them sound great! Given the wide variety of amplifier designs, it would seem that the audio industry would disagree that the power amplifier’s job is all that simple. Rotel has gained considerable experience over the last five decades with amplifier research and development. Their “ balanced design concept” influences all of their audio products and emphasizes three elements: part selection, circuit topology, and critical evaluation. Therefore, it comes as no big surprise that Rotel would continue to advance the performance of its well-regarded amplifier product line with the brand spanking new RB-1590. The Rotel RB-1590 Front Panel Clean and jerk When I get a box that has 45 kg stamped on its exterior, I immediately call my handyman and have him wrestle that sucker out of the carton and into my rack. As the transformer in this baby is humongous, I was not surprised that it had heat vents nearly everywhere, front façade included. The Rotel RB-1590 Rear Panel Simplicity itself, the front panel has a power button and vents; a rack mounting kit is also supplied. The rear panel has dual speaker wire binding posts, remote trigger inputs, a switch to select balanced or unbalanced inputs, and a power cord receptacle. The considerable heft of this amp aside, one gets the immediate impression from “power on” that the Rotel RB-1590 will be one stone cold keeper. The Rotel RB-1590 Inside View Gobs and gobs of power The RB-1590 amp was partnered with the RC-1590 preamplifier (reviewed separately). I firmly believe that when a company releases new products, they are voiced to sound best when mated together. This Rotel pair seemed to support that article of faith. The amp and preamp were connected in the balanced mode for the evaluation period. While you “sacrifice” 4 dB of gain in balanced operation, there is a theoretical (but not always appreciable) improvement in noise floor that can get you deeper into musical details and backgrounds. This reduction in gain, as Rotel was kind enough to inform us “was a design decision to reduce the amplifier gain on the XLR to ensure the actual audible output (watts) and performance was the same between these 2 signaling connections. So the gain of the XLR is designed to be 4dB lower in the amplifier but the output performance based on typical input voltage levels of XLR and RCA will sound the same.” The RB-1590 was charged with driving my reference speakers, the Totem Mani-2 signatures, two-way ported black beauties that rested securely on Sound Anchor stands. The Mani-2 Sigs have relatively low sensitivity (85 dB) that can challenge the headroom of many amplifiers and a nominal impedance of 4 Ohms but I figured that, at 350 honking watts per channel, the RB-1590 would be more than up to the task of making them sing. I challenged the Rotel stereo amp with a passel of high-resolution material including some recent Blu-ray Pure Audio discs from Sono Luminus via my Oppo BDP-105 universal player. One disc in particular, ZOFO plays Terry Riley, is an enterprising tour through piano works for four hands by one of America’s leading composers. The piano in this case was a Steinway D series, recorded in DXD format, 352.8kHz/32-bit resolution and down-rez’d to 192kHz/24-bit for this disc. The sweep, heft, and sheer power of the piano came through with astonishing realism and gave notice that the RB-1590 was going to be a force to be reckoned with. Digging into the extensive high-resolution library on my MacBook Air, connected to the USB port of an Esoteric K-01 SACD/CD player, I went to one of my favorite recordings, Eiji Oue and his Minnesota Orchestra’s rendering of Stravinsky’s Firebird Suite. This Reference Recording is a 176kHz/24-bit dandy that begins quite softly and suddenly, at 9:28, hits you in the gut with a huge wall of sound. The low noise floor of the RB-1590 enabled all of the many details of this piece to come across very clearly and very loud! As a former voice student, I have always been attracted to recordings that feature the human voice. The late Eva Cassidy left behind a treasure trove of great tracks. Her deceptively simple voice and guitar version of “Wayfaring Stranger” on Simply Eva (44.1kHz/16-bit FLAC) sounded absolutely perfect, with terrific recovery of this song’s subtle microdynamics. I am totally amped! While living with this amplifier, I noted how overbuilt it is and how well protected from such untoward events as thermal overload or sudden signal anomalies. Try as I might with sound levels much higher than usual, I was unable to “trip” the protection circuitry. This was very reassuring as, in my younger and wilder days, I have decommissioned some very well regarded “high-end” amps. Most importantly, the RB-1590 opened up my speakers like nobody’s business yet it did not call undue attention to itself. The Good Built like the proverbial tankSimple installationPlenty of powerBullet-proof design The Bad Heavy (no handles) The Scorecard: Design/Ergonomics: [Rating:4.5/5] Performance: [Rating:4.5/5] Value: [Rating:4.5/5] Overall: [Rating:4.5/5] The Definitive Word In spite of today’s home theater frenzy, there are still plenty of listeners who prefer to take their music in two channels, if you please. It is for these folks, regardless of their music preferences, that Rotel intends this beast of an amplifier. At nearly $4K, the RB-1590 is not inexpensive, but it is likely to be the last stereo amplifier that you will ever need and should provide many years of sheer listening enjoyment. If you can spring for an additional $1750.00, consider mating it with the RC 1590 stereo preamplifier, and you will truly be set for the foreseeable future.PER E-BAY STATS FOR THE LAST 90 DAYS ON THIS AMP. Sold listings in the last 90 daysMedian sold price$2,749.99Free shipping50%
Price: 2998 USD
Location: Fort Lauderdale, Florida
End Time: 2024-10-07T04:44:00.000Z
Shipping Cost: 288.98 USD
Product Images
Item Specifics
All returns accepted: ReturnsNotAccepted
Color: Black
Mount: Rotel
MPN: RB-1590
Internet Connectivity: Wired
Compatible Product: KRELL
Audio Outputs: Banana Speaker Jacks, Raw Cable Speaker Jacks
Serial Number: SN: FR012282251024062
Number of Outputs: 4
Amplifier Class: AB
Brand: Rotel
Type: Power Amplifier
Item Condition: MINT CONDITION!
Audio Inputs: Stereo L/R RCA, XLR
Unit Type: Unit
Number of Channels: 2
Number of Inputs: 4
Model: RB-1590
Connectivity: Wired
Features: Analog, XLR AND RCA INPUTS
Unit Quantity: 1
Power: 350 W
Product Line: RB-1590