Rogue Audio
Rogue Audio Cronus Magnum III Tube Integrated Amplifier
Best tube amplifier for audiophiles seeking versatile, high-fidelity sound.
Experience refined audio with the Rogue Audio Cronus Magnum III Dark Integrated Amplifier. This acclaimed tube amplifier delivers a smooth, liquid sound with 100WPC, enhancing detail and imaging. It features a redesigned phono stage for MM/MC cartridges and a Triode/Ultralinear switch for on-the-fly tonal adjustments. A new high-current headphone circuit ensures pristine personal listening. Expertly designed and hand-built in the USA, it combines a triode preamplifier with the Atlas Magnum power section for an immersive soundstage.
$3495.00
More Cronus Options
Owner Satisfaction
4.7
/ 5
Category Rank
325
/ 1688
#325 in Power Amplifiers
Price vs Category Average
-58%
Below average
Output Power
100
/ WPC
Who it's for
- Audiophiles seeking powerful dynamics with classic tube warmth
- Vinyl enthusiasts and headphone users wanting an all-in-one solution
- Listeners who enjoy easy maintenance and personalized sound tuning
Who should skip it
- Owners with limited ventilation or small, enclosed listening spaces
- Budget-conscious buyers wary of recurring high-end tube replacement costs
- Minimalists requiring compact gear or lightweight shelving solutions
Performance breakdown
Sonic Versatility
Triode and ultralinear switching offers two distinct, high-fidelity sound profiles.
Phono Stage Performance
Dedicated MM and MC support provides exceptional clarity for vinyl enthusiasts.
Power Delivery
The 100WPC output drives demanding speakers with effortless, tube-driven authority.
Headphone Amplification
High-current MOSFET circuitry delivers a surprisingly robust personal listening experience.
Build Integrity
Hand-built American construction features heavy-duty components for long-term reliability.
Signal Purity
Short signal paths and low noise floor ensure a clean, transparent soundstage.
Key Specs
Output Power
100 WPC
Frequency Response
20Hz-30KHz bandwidth
Tube Complement
(2) 12AX7, (3) 12AU7, (4) KT88
Dimensions (Actual)
18" W x 17.5" D x 6.75" H
Phono Gain Settings
45dB and 60dB
Power Supply
Massive high storage linear power supply
Inputs
4 RCA inputs (phono, line 1, 2, 3)
Construction
Heavy (2 ounce) copper circuit board
Features
- Upgraded 'Dark' version refinement package
- Triode/Ultralinear switch for sound tuning
- Redesigned phono stage for MM/MC cartridges
- New MOSFET buffer headphone circuit
- Buffered variable and active outputs
- Short signal paths and low noise floor
- On-the-fly sound tuning capability
- Designed and built in the USA
What customers say
Users overwhelmingly praise the Rogue Audio Cronus Magnum III for its exceptional sound quality, consistently noting a rich, warm, and highly detailed sonic signature that captures true tube magic. The amplifier creates an expansive soundstage with precise imaging and a natural musical presentation. Reviewers appreciate its impressive dynamics and solid bass control. Furthermore, the integrated MM/MC phono stage and headphone output add significant versatility and value. Many consider this unit an outstanding performer that rivals much costlier equipment. Its robust build and customization options solidify its status as a highly recommended integrated amplifier for discerning listeners.
Know before you buy
The Triode mode offers a warmer, more intimate sound with a focus on harmonic richness, while the Ultralinear mode provides more power, punch, and a wider soundstage. You can switch between these modes on the fly to best suit the specific genre of music you are listening to.
Yes, the redesigned phono stage is compatible with both MM and MC cartridges. It features selectable gain settings of 45dB for MM and 60dB for MC, allowing you to match it to your specific turntable setup.
The Cronus Magnum III features a new high-current MOSFET buffer circuit that delivers 2W of power. This is robust enough to drive a wide range of headphones, including more power-hungry planar magnetic models, with excellent clarity and low noise.
The amplifier includes both 4-ohm and 8-ohm transformer taps on the back panel. You should connect your speakers to the tap that most closely matches their nominal impedance rating to ensure optimal power transfer and performance.
While not strictly required, the unit features a massive high-storage linear power supply designed to handle current demands effectively. If you live in an area with particularly noisy power lines, a high-quality power conditioner can help maintain the low noise floor inherent in the amplifier's design.
Like all tube amplifiers, the KT88 power tubes and the 12AX7/12AU7 preamp tubes will eventually need to be replaced as they age. Under normal usage, these tubes typically last several thousand hours, and the amplifier is designed to make the process of tube rolling or replacement straightforward.
Still have a question?
Ask Hayley anything about this product before you decide.