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.
The following section describes the CAD-300SEI basic specifications. The specifications are subject to change without notice or obligation.
| 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 |