CAYIN SPARK 734

Second-hand, in good condition, it has some small scratches (see pictures). Without its original package.
Upgradet with: audionote  noble enhancement, power socket Furutech  fi -06 ncf and nos tubes;   supplied with grid protection

Vacuum tube integrated amplifier

The amplifier uses two 12AX7 tubes for the preamp section, with both triodes in parallel at the front for optimal gain, and two 12AU7 tubes for the phase splitters, which contribute to a smooth and natural sound. For the final stage, the Cayin Spark 734 uses 4 x EL34 tubes, known for their ability to produce a powerful, rich sound with a particularly soft and detailed timbre.

The amplifier’s gain is adjustable, allowing users to customize the listening experience. The tube bias management is simple and intuitive, with easy adjustments made through accessible measurement points inside the unit. With accurate calibration, the Cayin Spark 734 offers stable and long-lasting performance.

The Cayin Spark 734 is appreciated for its ability to project voices and instruments with remarkable depth and precision, creating an engaging sound image that seems to "emerge" from the speakers. The midrange is crystal-clear and detailed, with a natural reproduction of vocals, while the bass is controlled but never intrusive.

Additionally, the amplifier is designed to eliminate background noise and hum, even when paired with high-sensitivity speakers, such as those with 90 dB/W efficiency. This makes it particularly suitable for critical listening, where the silence between musical passages is just as important as the quality of the sound reproduction.

The Cayin Spark 734 is easy to set up and use. Bias adjustment is simple and can be performed with the amplifier placed sideways, with the bottom removed, requiring no complex tools. The bias can be measured through four easily identifiable 10-ohm resistors. While manual calibration is possible, a modification is available that moves the bias measurement points to the outside of the unit for even more convenient maintenance.

The Cayin Spark 734 is a tube amplifier that delivers high-quality audio performance at a competitive price, with solid construction, efficient sound management, and ease of maintenance, making it an ideal choice for hi-fi enthusiasts looking for a product with exceptional value for money. The warm and immersive sound, along with its ability to work with high-efficiency speakers, makes it a versatile amplifier capable of satisfying a wide range of sound preferences.

Technical specifications:

• Type: Tube
• Power: 2 x 45W/8 Ohms
• Inputs: 4 Line
• Dimensions: 36 x 21 x 40 cm
• Weight: 25 kg
• Notes: Class AB, Push-Pull, EL34 (4), 12AU7 (2), 12BH7A (2), 6922 (2)