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Cayin CS-300A
Cayin's new CS-300A integrated amplifier with single-ended tube design is equipped with two direct-heated 300B output tubes, able to output 8 watts of RMS per channel. The two directly heated triodes are powered in a single-ended configuration by a 6SL7 voltage amplifier stage with a downstream 6SN7 driver stage. Two GZ34 tubes are responsible for the channel-separated high-voltage rectification.
The pre-in input also offers the option to use the Cayin CS-300A as a pure power amplifier. Different taps for 4, 8 and 16 ohms allow for adjusting to the speakers in use. An output transformer specially designed for this single-ended amplifier with separate winding taps for the headphone output additionally makes the CS-300A ready for operation with headphones.
User can adjust the bias of the 300B tubes with the integrated display and a two-stage switch for individual adjustment of the negative feedback are also built into the amp.
The Cayin CS-300A is hand-built with point-to-point wiring. A soft-start circuit to protect the amplifier is said to provide longer life for the tubes as well as other sensitive components. In addition, Cayin uses high-voltage fuses to protect the remaining components in the event of a tube failure. All functions can be controlled via the included remote control, which comes in a metal housing.
SPECIFICATION
Model: CS-300A
Power Output: 8W + 8W RMS
Frequency Response: 10Hz - 32kHz (-3dB)
THD: 1%(1kHz)
Power Supply: Custom made Toroidal Transformer
Power Consumption: <160w
S/N Ratio: 86dB
Input Sensitivity: 280mV (Integrated)
1000mV (Pre-In)
Dimension: 420 x 195 x 382 mm(W x D x H)
Net Weight: 26kg
Output Impedance: 4Ω, 8Ω, 16Ω
Input Impedance: 100kΩ
Tube: 2 x 300B, 2 x 6SL7, 2 x 6SN7, 2 x GZ34S/5AR4
Input Terminals: Line 1, Line 2, Line 3, Pre-In
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