Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Bloggers and YouTubers have tried this product—so we've summarized their strongest opinions below. Links to full reviews follow.
Product Strengths
- Rated at 200 watts per channel with all channels driven, providing substantial power
- Has a slight warmth to its sound signature that enhances music and movie soundtracks
- Exceptional build quality with a rigid chassis and brushed aluminum fascia
- Exhibits control and detail in its sound reproduction
Product Considerations
- A large and heavy amplifier, requiring a sturdy AV rack and assistance to move
- More forward sounding, which might not suit all listeners
- May lack the last iota of detail compared to more expensive amplifiers
- The wheels that were present on the predecessor model (RMB-1095) have been removed, making positioning more difficult
Comparisons (according to reviewers)
- Vs Emotiva XPA-5 Gen2: The RMB-1585 provided 'blacker' backgrounds and more well-defined bottom end, and the XPA-5 Gen2 images sounded more compressed, more dry and bright and lean, with a less-well-defined bottom end
- Vs Parasound Halo A 51: The Halo A 51 delivered more detail, larger and more three-dimensional images, and greater speed and control
- Vs Rotel RMB-1095: The RMB-1585 has vastly superior thermal management, added control, and more accurate reproduction of tonalities
Takeaway: The RMB-1585 is a powerful amplifier that offers clean and detailed sound for both movies and music. The RMB-1585 is a great choice for anyone looking for a high-quality amplifier to drive their home theater system.
All
RMB-1585
reviews

Manufacturer details
- Power Output: 200W/Ch (5 channels driven, 8Ω), 310W/Ch (5 channels driven, 4Ω)
- Total Harmonic Distortion (THD): <0.03% (20Hz-20kHz)
- Frequency Response: 10Hz - 100kHz +0.5, -3dB
- S/N Ratio: 116dB (IHF "A" Weighted)
- Gain: 26.5dB
- Intermodulation Distortion: <0.03% (60Hz:7kHz, 4:1)
- Damping Factor: 260
- Speaker Impedance: 4Ω minimum
- Input Sensitivity: Line Level Inputs (RCA): 1.9V, Line Level Inputs (XLR): 3.8V
- Input Impedance: Line Level Inputs (RCA): 12kΩ, Line Level Inputs (XLR): 100kΩ
- Dimensions: 431 × 237 × 454mm (17" × 9.4" × 17.9")
- Power Consumption: 1100W
- Standby Power Consumption: 0.5W
- Net Weight: 36kg (79lbs)
- BTU Rating: 2372 BTU/h (4Ω, 1/8th power)
Brand highlights
Taking a step back to look at reviewers' thoughts of the brand's entire lineup—not just this product—what stands out most is the following:
- Rotel manufactures its own toroidal transformers, allowing precise control over power delivery and contributing to the robust build quality of their products.
- They frequently incorporate a fully functional moving magnet phono stage into their amplifiers, catering to vinyl enthusiasts with a high signal-to-noise ratio.
- Rotel products offer a "straightforward" design philosophy that prioritizes excellent sound quality and ease of use, rather than extensive customization options.
Select products
Rotel S14
- Positioning: An integrated network streamer, offering an all-in-one solution for music streaming.
- Description: Provides convenient access to a vast catalog of online music, delivering 150 Watts of Class AB power. Features a 32-bit ESS DAC for high-resolution audio. Compared to other Rotel products, the integration of streaming services and Roon Ready certification provides a seamless experience for those prioritizing ease of use and modern connectivity.
Rotel RAS-5000
- Positioning: A high-performance integrated streaming amplifier designed to enhance home entertainment systems.
- Description: Offers 220 Watts of Class AB power. Includes advanced features like HDMI ARC and aptX HD Bluetooth, distinguishing it from other Rotel models by providing superior connectivity options for home theater setups.
Our take on the brand
Look inside the brand
Our interview with the brand
What are two key technological innovations or strong opinions that differ you from other brands?
What's your approach to customer support?
What are your favorite tracks for showcasing the strength of your products?
What other products pair best with yours?
Used
Rotel
What if you spend more?
The A35.8 is Primare’s most powerful and flexible multi-channel amplifier, designed to serve the needs of virtually any high-performance multi-channel system through its ability for each pair of channels to be bridged to mono for an incredible level of power delivery and system building options, including 1500 watts of total output in a fully bridged bi-amped stereo configuration. Shipping June 2022!
Our summary
Product Strengths
- The A35.8 provides eight channels of 'unimpeachable Class D power in a fairly compact and very flexible package'
- Flexible configuration options for power output to speakers are available, such as bi-amping and bridging
- Each stereo pair can be bridged separately to make four times 375 watts (8 Ohms) from the eight times 150 watts
- Fault-free sound quality
- High quality fit and finish
- The A35.8 offers flexible connectivity options
Product Considerations
- The 20-amp power inlet is the seldom-seen variety with three horizontal blades
- The speaker output posts are spaced too widely for dual-banana plugs
- Cabling can be tricky
- A high current power cord is needed
- Lower gain is present, though this doesn't necessarily need to be an issue
Comparisons (according to reviewers)
- Vs NAD M28, the A35.8 gets you one more channel and more versatility for a 10% price increase
- Vs Benchmark AHB2, the Benchmark presented a more neutral tonal balance and undistorted soundstage
- Vs NAD C 298 stereo amplifiers, the Primare seemed slightly more forward, often conveying an appealing liveliness
Takeaway: The A35.8 power amplifier is a flexible and versatile product worth considering for anyone seeking a high-quality multi-channel setup. Its ability to bridge channels offers many ways to configure your speaker system.
Video review
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Our summary
Product Strengths
- The EAR 890 produces 70Wpc in stereo, and can be bridged to 140W in monoblock
- Neutral sound that gets out of the way and lets the user enjoy the music
- Complex and dense music textures are handled with ease, and dynamically demanding passages are sailed through
- Articulate midrange
- Detailed and realistic bass
Product Considerations
- Removing/installing tube cages is difficult and time-consuming
- The loudspeaker binding posts are positioned too close to the output transformers, making it hard to tighten them properly
- Some assembly work appeared amateurish, specifically the use of silicone in various locations, such as fastening chassis wires
- The amplifier can operate quite hot
- May not have as much bass impact compared to solid state amps
Comparisons (according to reviewers)
- The EAR 890 monoblocks achieve SET-like definition along with the authority and swagger necessary for most full-size speaker systems, when compared to Cary Audio 300B SET amps
- The EAR 890 is as textured as the top LAMM designs, but with noticeably better neutrality and more power
- The EAR 890 surpassed the deHavilland KE50As with a more articulate midrange, producing more color and separation in the microtones of instruments
Takeaway: The EAR 890 is easy to set up and sounds good with very little tweaking, making it easy to just sit back, relax, and enjoy the music. It's a good choice for people who want a tube amp that is both musical and powerful for their home listening experience.
Video review
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Our summary
Product Strengths
- Delivers amazing quality of sound and detail
- Bulletproof amplification
- Has a rhythmically soulful sound with a tremendously rich and natural midrange
- The A51's bass is well-defined, extremely textured, and robust
- With 250 watts on tap, the Parasound A51 will power virtually anything
Product Considerations
- Due to its class A/AB design, the A51 does get a bit warm and should be installed in a properly ventilated space and/or rack
- The A51 is large and heavy, and is best moved and/or positioned by two people
Comparisons (according to reviewers)
- Compared to Rotel, the Rotel makes the M&K Sound system slightly bright with a bit of sibilance, while the Parasound is more neutral
- Compared to Acurus A250, the Parasound had tighter bass, which is probably attributed to a better damping factor
Takeaway: The Parasound Halo A51 is a high-performance amplifier with great sound quality, detail, and build quality, making it an excellent choice for audiophiles and home theater enthusiasts. Its ability to deliver power and control to speakers makes it a valuable addition to any high-end audio system.
Video review
Our take on the brand
The AGD “TEMPO” Stereo Amplifier is the new addition to our state-of-the-art Hi-End Power Amplifiers family. TEMPO is our first compact Stereo Amplifier utilizing the same unique technology of Gallium Nitride Power-Stage design already in use with all its Hi-End AGD siblings.
Our summary
Product Strengths
- GaN technology allows for efficient power usage, with 94% of energy being turned into sound
- Compact size challenges the notion that high-quality amps need to be large
- Design and packaging create pride of ownership
- It can be run in bridged mode to deliver 400 watts into one channel
- Stability and ability to handle complex impedance loads
Product Considerations
- The slight sonic signature may not be for everyone
- If truly outrageous amounts of power are needed to drive speakers, a second AGD Tempo amp might be needed to run in a bridged configuration
- High-frequency noise was discovered when XLR cables were not connected between them
- Power cords can make a large difference, the included power cord doesn't flatter the amp
- Some traditionalists may find it hard to accept that it's a Class-D amplifier
Comparisons (according to reviewers)
- Compared to Peachtree Audio GaN400, the AGD Tempo reports to have better overall specifications
- Compared to Parasound Halo A21+, the AGD Tempo is simply superior
- Compared to Bricasti M30 monoblock amplifiers, the level of which the most subtle detail exists approaches reference Bricasti M30 monoblock amplifiers
Takeaway: The AGD Productions Tempo is a cutting-edge amplifier that offers a new take on audiophile amplification and rivals more expensive amplifiers. It can drive speakers easily while being energy efficient.
Video review
Our take on the brand
What competes at this price?
Our Summary
Product Strengths
- The RMB-1585MKII delivers 210W per channel at 8 ohms or 340W per channel at 4 ohms, all channels driven
- An oversized toroidal transformer and 120,000µF of filter capacitance ensure clean and solid power delivery
- Thermostat-controlled, variable-speed, low-noise fans keep the amplifier cool
- A bi-amping option is available using channels 1, 2, 4, and 5
- Both RCA and XLR inputs are supported
Product Considerations
- At very close range, a faint hiss can be heard from the tweeter when using the Rotel, though it is not noticeable during regular use
- If not properly ventilated, turning off the fans could shorten the amplifier's lifespan
- Its weight of 82lbs may require assistance when moving or installing
- Those seeking a warm, buttery tube sound or holographic presentation of class-A designs may want to consider other options
Comparisons (according to reviewers)
- Compared to the Anthem AZ7000ES receiver, the RMB-1585MKII produces a bigger soundstage with cleaner details, especially when pushed loud—and a more three-dimensional sound
Takeaway: The Rotel RMB-1585MKII is a powerful amplifier that provides clean and dynamic sound for a home theater or music system. Its robust build and features, like the bi-amping option and cooling system, make it a great choice for taking any system to the next level.
Video review
Our take on the brand
Our Summary
Product Strengths
- Oversized Toroidal transformer allows it to produce the dynamics of a movie soundtrack without running out of power or clipping, keeping distortion low at all volumes
- Smart auto-switching XLR and RCA inputs make installation a simple plug-and-play process
- High-quality gold-plated binding posts for each channel allow users to choose banana plugs or spades
- Thermostat-controlled variable speed low-noise fans keep the amplifier cool, especially when installed in tight rack spaces
Product Considerations
- Turning the fans off might be an option if placed in the listening room and well-ventilated, but it will make the amplifiers run hotter and could shorten their lifespan if the fans are turned off without proper ventilation
- This Rotel is not for someone who likes a warm and buttery tube sound or wants the holographic presentation of great class-A designs
Comparisons (according to reviewers)
- Vs inexpensive class D multi-channel amplifiers, the RMB-1587MKII has a solidity to its sound that one won't find in some of the inexpensive class D multi-channel amplifiers
- Soundstage and imaging were solid—only bettered by much more expensive amplifiers that are dedicated to two-channel audio
Takeaway: The RMB-1587MKII is a solid option for people wanting to take their theater system to the next level, because it delivers clean, solid power with smart features. It will give users years of trouble-free enjoyment.
Video review
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Our Summary
Product Strengths
- The M23's build quality feels solid and elegant, with impressive small design details
- The sound is striking in its purity and clarity
- It offers up to three levels of gain, switchable on the back panel, to best fit the system
- It provides a clear sound without sounding hard
- It features Purifi Eigentakt Class D amplification, which provides virtually unmeasurable distortion levels
Product Considerations
- The bass is clean but may be perceived as a little on the cool side and not as 'wompy-sounding'
- The M23 is not a forgiving amplifier that makes everything sound sweet and wonderful—it's not for those seeking a soft and mellow sound
- Bridging with speakers below 5 or 6 ohms is not recommended, as the amp will current limit and potentially shut down
- The reviewer found ergonomical challenges using fancy speaker cables in bridged mode due to wide terminal spacing
- The capacitive touch power button can accidentally trigger
Comparisons (according to reviewers)
- Vs Bel Canto C6i: The M23 offered a layer of refinement and better reproduction of the recording space
- Vs Pass XA25: The M23 had more transparent sound and detail, especially in the treble and upper mids, but lacked the organic quality of the XA25
- Vs HiFi Rose RS 520: The M23 sounded cleaner and had better separation/depth, HiFi Rose seemed to have an EQ built-in, emphasizing midrange and bass
- Vs NAD C298: The M23 is more neutral, deals with decay more naturally, and has better casework, making it look high-end
- Vs Anthem M1 monoblock amplifiers: The M23 was slightly more transparent throughout the entire frequency range
- Vs Bryston 4B 3: The Bryston had more grunt but the M23 is more neutral
Takeaway: The NAD M23 is a powerful and precise amplifier that delivers clean and clear sound, making it a great choice for audiophiles who want to hear their music as accurately as possible. It is especially well-suited for those looking to build a high-end system around a quality preamp or DAC.
Video review
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Our Summary
Product Strengths
- Delivers ample, clean, and dynamic power to all channels, ensuring speakers reach their full potential
- Designed by John Curl, featuring Class A/AB circuitry for a balance of warmth, richness, efficiency, and punch
- Pleasing sound for dialogue and music, with very high-quality and detail
- Versatile, suitable for both movies and music, with a low noise floor for quiet passages and great transparency—that doesn't color the sound
- Built to last, with high-quality internal components
- Signal-sensing power-on mode can be fussy and may require adjustment
Product Considerations
- Super heavy and large, potentially requiring rearranging a system or dedicated rack space
- Only available in anodized black
Comparisons (according to reviewers)
- The A52 Plus has bigger parts and bigger power than the Outlaw Model 5000, including balanced XLR connections
- A52 Plus is the 'teenager' compared to the elder Parasound A51
- Parasound A52+ sounds better, is more accurate, and more powerful than the Denon receiver's amplifier section
Takeaway: The Parasound A52+ Halo is a versatile and powerful amplifier that delivers clean, dynamic sound for both home theater and music systems, with a build quality designed to last. This is a worthy investment for audiophiles and home theater enthusiasts who seek high-quality audio performance.
Video review
Our take on the brand
Our Summary
Product Strengths
- Exceptionally transparent sound output quality
- Exceptionally powerful, capable of outputting 500W into a 4-Ohm load
- Delivers a remarkably clean, transparent sound with very little noise or distortion
- The amplifier's ability to reproduce bass is awe-inspiring and delivers deep, powerful bass without distortion
- Runs cool and weighs very little for its sound output, making it easy to move around
Product Considerations
- Options can be a little pricy, such as the 12v trigger and RCA inputs
- The Starkrimson Stereo Ultra may lead to further system upgrades
- Depending on your sources, the Starkrimson Stereo Ultra will play exactly what you feed it, good or bad, and if your source components are slow, the Starkrimson Stereo Ultra will not speed them up
- Power on only after all connections are properly made, including the power cord, analog inputs, and speaker outputs, and wait five minutes after powering it off before removing any of the connections
Comparisons (according to reviewers)
- Compared to the Krell S550i integrated amp, the Starkrimson Stereo Ultra showed a much faster and finer resolution of the upper frequencies of the human voice and a far greater ability to play more of the microdetails of a recording
Takeaway: The Starkrimson amplifier is well-built and provides a level of speed and transparency to hifi music that makes listening to music very fun. Its GaN modules can be upgraded and it is available in several configurations.
Video review
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