Cary Audio CAD-300SEI Integrated Amplifier
The CAD-300SEI delivers the holographic warmth and emotionally vivid midrange that make 300B amplification enduringly seductive. 10 Audio admired its heightened transparency as an integrated, while HiFi Huff found generous bass weight, convincing slam and expansive organic imaging. Its hand-wired, 15-watt single-ended design is a refined match for efficient speakers and intimate, immersive listening.
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Nicely Roasted
Sound Quality
94/100
Build Quality
88/100
Features Connectivity
82/100
Value for Money
85/100
Pros
Highly transparent integrated presentation, with no separate preamp preferred in the reviewer's comparisons.
Sweet, solid midrange with generous bass weight, impactful drums and convincing slam.
Expansive wall-to-wall, floor-to-ceiling soundstage with organic imaging.
Beautiful fit and finish, plus three line inputs offer useful flexibility for a minimalist tube integrated.
Cons
Its 15-watt output calls for suitably sensitive speakers rather than demanding low-efficiency loads.
With stock tubes, bass was reported as slightly tubby and treble less extended than a comparison amplifier; tube upgrades improved control and extension.
A faint transformer vibration was audible close to the chassis, even though it was not heard from the listening seat.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 94/100
Reviewers portray the CAD-300SEI as an unusually involving single-ended 300B design: transparent, richly embodied through the midrange, and capable of expansive, organic images. Its presentation favors sweetness, immersion, and tonal solidity, with tube choice affecting bass control and top-end extension.
Transparency Resolution
94/100
10 Audio reports that removing a component brought a striking increase in transparency. HiFi Huff also heard greater clarity and more extended treble with upgraded tubes, suggesting this amplifier can sound notably open and resolving with sympathetic partnering.
Tonal Balance Musicality
96/100
HiFi Huff describes a sweet, immersive, heart-tugging presentation with refinement and solidity, particularly through a weighty, fleshed-out midrange. Treble is praised as sweet and beautiful, though somewhat more rolled off than the comparison amplifier; stock tubes were said to make the bass slightly tubby.
Dynamics
93/100
Despite its modest 15-watt output, the Cary was heard as having a strong sense of power and slam, with bigger drums and substantial midbass that avoided excessive puffiness. Improved tubes reportedly brought further gains in dynamics and impact.
Soundstage Imaging
93/100
HiFi Huff heard a floor-to-ceiling and wall-to-wall stage with beautiful, organic imaging. The emphasis is on immersive scale and natural image formation rather than hyper-etched spatial precision.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
88/100
HiFi Huff calls the Cary's fit and finish beautiful. The specifications also describe substantial transformer hardware and a 51-pound chassis, but the reviews provide limited commentary on long-term durability or internal execution.
Features Connectivity
82/100
This is a deliberately simple analogue integrated amplifier with three line-level inputs and a headphone jack. It offers more source flexibility than a one-input minimalist design, but lacks the digital, network, phono, balanced, and home-theater facilities expected from more comprehensively equipped amplifiers.
Value for Money
85/100
At roughly $5,246-$7,290, the CAD-300SEI is a significant specialist purchase. HiFi Huff calls it a very special amplifier, but the available reviews do not directly compare its performance or feature set with similarly priced alternatives.
Reviews & Sources
Professional reviews and sources for this product's Watt'n Potatoes analysis.
Online Reviews & Mentions
Forum Mentions
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Specifications
- Circuit Type
- Single-Ended Class A
- Power Output
- 15 watts
- Input Sensitivity
- .42 Volt for full output
- Noise and Hum
- -90 dB below full output
- Frequency Response
- 20 Hz to 23 KHz +/- .75 dB
- Inputs
- CD, AUX1, AUX2, Headphone jack
- Tubes
- 1 ea – 6SN7 Input 2 ea – 6SN7 Driver 2 ea – 300B Output
- Power Transformer
- 1 ea – EI Laminate, 200% Duty Cycle
- Output Transformer(s)
- 2 ea – EI Laminate Air Gap, 200% Duty Cycle
- Resistors
- 1% Metal Film
- Capacitors
- Polypropylene Film with hand-soldered copper terminals (optional upgrades available)
- Power Supply Capacitors
- 2 ea – 1200µF@250 VDC
- AC Cord
- 3 Conductor, Detachable
- AC Power Requirements
- 117/234 VAC @ 50/60 Hz
- Consumption
- 107 watts – Operation
- Warm-Up Time
- 3 Minutes
- Break-In Time
- 100 hours of playing time
- Finish
- Anthracite black chassis with silver or black aluminum faceplate
- Weight
- 51 lbs
- Dimensions
- 8″ H x 14″ W x 14″ D
Manufacturer's Description — Cary Audio
About the CAD-300SEI Integrated Amplifier
Unlock the realm of unparalleled realism and detail with SET—Single-Ended Triode—an insider secret revered by tube enthusiasts. The CAD-300SEI harnesses this technology to deliver a pure, natural musical experience, eliminating distortions and revealing rich layers of detail, a lush midrange, and captivating dimensionality. Despite its modest 15-watt total output, this amplifier excels where others falter, creating a backdrop of silence against which every musical nuance flourishes.
Quiet yet powerful, the CAD-300SEI unveils the true essence of your favorite recordings, allowing you to discern the subtlest details—from the resonant tones of a Steinway piano to the nuanced timbres of a Stradivarius violin. Uncover hidden intricacies and experience music in its purest form. Praised by Head-Fi enthusiasts worldwide as one of the best headphone amplifiers available at any price, its integrated headphone output offers uncompromising amplification, utilizing the amplifier’s full circuitry for a transcendent listening experience. Elevate your audio journey with the CAD-300SEI—a testament to the timeless adage that simplicity is the ultimate sophistication.
Verified Dealers
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Authorized dealers for Cary Audio CAD-300SEI Integrated Amplifier
- Acoustic Sounds — online and in-store — Salina, Kansas, United States (website)
- Audio Affair — online and in-store — Deritend, England, United Kingdom (website)
- Audio Aktoren — online and in-store — Horten, Vestfold, Norway (website)
- Audio Classics — in-store — New York, United States (website)
- Audio Revolutions — in-store — Khwaeng Thung Phaya Thai, Krung Thep Maha Nakhon (website)
- Audio Tempel — online and in-store — Zwolle, Overijssel, Netherlands (website)
- Audiogears — in-store — Casalecchio di Reno, Emilia-Romaña (website)
- Audiotehnika — in-store — Centra rajons, Latvia (website)
- Class D Audio USA — online — United States (website)
- deciBel Audio — in-store — Chicago, Illinois, United States (website)
and 13 more verified dealers