CAD-120S

About the CAD-120S

The Cary Audio Design CAD 120 S MkII is a high-performance stereo vacuum tube power amplifier known for its flexibility and sound quality. It operates in Class AB push-pull configuration with selectable ultralinear or triode modes via a front panel switch. In ultralinear mode, it delivers 120 watts per channel, while in triode mode it provides 60 watts per channel in pure Class A operation. The amplifier features fully balanced circuitry with both XLR balanced and RCA single-ended inputs, allowing compatibility with a wide range of preamplifiers. It uses 2 x 6SN7 tubes for input gain stage, 2 x 6SN7 driver tubes, and 8 x KT88 output tubes. The design includes special bifilar wound output transformers rated at 150 watts per channel and EI laminated power transformers. The unit has a noise and hum level of -80 dB, input impedance of 100K ohms for both RCA and balanced inputs, and a frequency response of 17 Hz to 25 kHz flat at 1 watt. It features Cary gold plated copper 5-way binding speaker posts and a detachable 3-conductor shielded AC cord. The amplifier weighs 65 lbs and measures 8" H x 17" W x 14" D. The finish is anthracite black chassis with a silver or optional black anodized aluminum faceplate. It requires a warm-up time of about 3 minutes and a break-in time of approximately 100 hours of playing time. The CAD 120 S MkII is praised for its stable power output, excellent sound quality, and build quality, including point-to-point wiring and carefully designed output transformers for optimal performance.