Cayin CS-150A Tube Integrated Amplifier

CAYIN CS-150A TUBE INTEGRATED AMPLIFIER

The Cayin CS-150A is a high-power vacuum tube integrated amplifier designed for demanding two-channel Hi-Fi systems. Combining four Tung-Sol KT150 output tubes with Class AB push-pull amplification, selectable operating modes and adjustable negative feedback, it offers substantial output power alongside the flexibility of traditional valve engineering.

KT150 PUSH-PULL AMPLIFICATION

The CS-150A employs four Tung-Sol KT150 output tubes, supported by four Tung-Sol 6SN7 tubes in the voltage amplification and driver stages. A dedicated RCA 22DE4 NOS rectifier tube provides high-voltage rectification for the amplifier's power supply.

Hand-wired point-to-point construction, a substantial toroidal power transformer and wide-bandwidth EI output transformers form the foundation of its analogue circuitry. Selected audio-grade capacitors and carbon-film resistors complete the carefully engineered signal path.

100W ULTRALINEAR AND 55W TRIODE OPERATION

The Cayin CS-150A provides selectable Ultralinear and Triode operating modes. Ultralinear operation delivers 100W per channel RMS, providing greater power reserves for suitable passive loudspeakers. Triode operation delivers 55W per channel RMS, offering an alternative output-stage configuration with different distortion and harmonic characteristics.

Both operating modes are available through the amplifier's front-panel controls, allowing listeners to adjust the output-stage configuration without changing components.

ADJUSTABLE NEGATIVE FEEDBACK AND TUBE BIAS

A two-position negative-feedback selector provides further flexibility in system matching. The LOW and HIGH feedback settings modify the amplifier's closed-loop operating characteristics, allowing listeners to select the configuration best suited to their loudspeakers and preferences.

The CS-150A also features selectable STANDARD and HIGH bias modes, together with an integrated meter and individual adjustment controls for the KT150 output tubes. Bias should always be set according to Cayin's operating instructions.

BALANCED XLR AND RCA CONNECTIVITY

One stereo balanced XLR input and two stereo RCA line inputs accommodate external DACs, music streamers, CD players and other analogue sources.

A dedicated PRE-IN connection allows the CS-150A to operate as a stereo power amplifier with a compatible external preamplifier. Separate 4Ω and 8Ω speaker terminals provide appropriate connections for different loudspeaker loads.

PREMIUM CONSTRUCTION AND EVERYDAY OPERATION

The CS-150A features an anodised aluminium front panel and a carefully finished, ventilated chassis. A Japanese ALPS volume potentiometer provides precise analogue adjustment, while the supplied metal infrared remote allows convenient operation from the listening position.

A soft-start circuit protects sensitive components during power-up, and the amplifier remembers its previous operating settings. Available in Black and Silver, the CS-150A combines traditional vacuum tube construction with practical functionality for high-end stereo listening.

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