Cayin SC-6LS MK2

The Cayin SC-6LS MK2 preamplifier, designed with meticulous attention to detail, stands out thanks to its six carefully selected and hand-matched tubes. Every component has been chosen to deliver exceptionally clear sound reproduction, with that signature warmth that only tubes can provide. Its robust brushed aluminum construction, topped with an elegant gold front plate, asserts its status as a premium device intended for the most discerning music lovers.

A Masterpiece of Audiophile Craftsmanship

The design of the SC-6LS MK2 demonstrates a rare level of expertise in today’s industry. Entirely hand-assembled with point-to-point wiring, this preamplifier benefits from a level of care that automated production lines cannot match. The circuit uses four 12AU7EH Electro-Harmonix tubes for linear amplification, complemented by two 22DE4 tubes for current rectification. This all-tube configuration, including the power supply stage, gives the signal remarkable purity.

The internal components reflect the same uncompromising philosophy of excellence. American Multicap coupling capacitors and Japanese TAKMAN carbon film resistors are renowned for their audiophile qualities. The internal wiring uses thick silver-plated conductors to minimize signal coloration. This attention to detail results in impressive technical performance, with an extended frequency response from 5 Hz to 100 Hz and a signal-to-noise ratio of 95 dB.

A Refined Sonic Signature

The Cayin SC-6LS MK2 stands out for its ability to deliver a soundstage of remarkable width and precision. The sonic signature of the 12AU7 tubes is renowned for its balance between detail and warmth, offering a natural musicality that often eludes transistor preamplifiers. The controlled harmonic distortion (0.4% at 1 kHz) is not just a technical figure, but reflects the preamplifier’s ability to reproduce musical harmonics in an organic way.

The 15 dB gain ensures sufficient amplification for most modern sources, while the maximum output voltage of 22V provides ample headroom before saturation. The class A construction guarantees sound reproduction free from crossover distortion, which is especially important for delicate musical passages and subtle nuances.

Connectivity and Versatility

The rear panel of the SC-6LS MK2 offers generous connectivity with four gold-plated RCA inputs, allowing you to connect various analog sources such as CD/SACD players, network audio players, or FM tuners. A distinctive feature of this preamplifier is its two independent RCA outputs, offering rare flexibility for complex audio setups.

This dual output allows you to simultaneously drive two different power amplifiers, or opt for a bi-amplification setup with mono blocks dedicated to bass and treble. The high input impedance of 100 kΩ ensures optimal compatibility with virtually all analog sources, while the moderate output impedance of 3 kΩ allows the use of comfortably long cables without signal degradation.

Refined Ergonomics and Aesthetics

The design of the SC-6LS MK2 blends classic elegance with modern functionality. Its brushed aluminum front panel features a source selector and a volume knob flanking a central gold plate that houses the power button. The integrated infrared receiver allows you to control the device from the supplied aluminum remote, managing volume and source selection remotely.

The soft-start function (about 30 seconds) protects the tubes when powering on, extending their lifespan. A protective cover for the tubes is also included, allowing you to safeguard them while maintaining the device’s aesthetic appeal. The compact dimensions (286 x 193 x 328 mm) make it easy to integrate this preamplifier into various audio furniture, though its substantial weight of 12.5 kg requires a sturdy support.

The Art of Tube Preamplification

Choosing a fully tube-based preamplifier like the SC-6LS MK2 is not simply a matter of nostalgia. This technology, far from obsolete, continues to offer sonic qualities sought after by the most demanding audiophiles. The 12AU7 tubes are especially prized for their tonal balance and their ability to reproduce musical harmonics with an authenticity that transistor circuits struggle to match.

The tube-based rectifier circuit design, using 22DE4 tubes, represents a purist approach rarely seen in modern preamplifiers. This configuration contributes to the excellent dynamics and channel separation that characterize the SC-6LS MK2, creating a three-dimensional listening experience where each instrument finds its precise place in the soundstage.

Technical Specifications

Design and Components

• Type: Stereo preamplifier
• Tubes:
  • 4x 22DEA tubes
  • 2x 12AU7 tubes (Electro-Harmonix)

Audio Performance

• Total Harmonic Distortion (THD): 0.4% (at 1 kHz)
• Frequency Response: 5 Hz – 100 Hz
• Gain: 15 dB
• Signal-to-Noise Ratio: 95 dB

Connectivity

• Output Voltage: 2 V (max. 22 V)
• Output Impedance: 3 kΩ
• Input Voltage: 350 mV
• Input Impedance: 100 kΩ

Physical Characteristics

• Power Consumption: 45 W
• Dimensions (W x H x D): 286 x 193 x 328 mm
• Weight: 12.5 kg