Description
Cayin CS-88A KT88 Tube Integrated Amplifier
The Cayin CS-88A KT88 Tube Integrated Amplifier is the successor to the A-88TMK2 Selection model.
This integrated stereo amplifier offers two listening modes: a triode mode focused on a smoother sound reproduction, and an ultra-linear mode delivering higher power. It outputs 48 watts per channel in ultra-linear configuration.
Equipped with transformers specifically designed for this model and a built-in MM phono input, the CS-88A KT88 is aimed at listeners seeking precise musical reproduction.
Its 28 kg construction reflects meticulous design, and its integrated bias measurement system makes adjustment easy.
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Features
- External user Bias Adjustment is accessible with the BIAS meter for monitoring on the top of the amplifier.
- External Tube Selection Switch between EL34 and KT88 on the rear panel for easy tube replacement.
- Equipped with remote control.
- Can be used as a Power amplifier.
- Soft start function (about 30 seconds).
- CS-88A can memorize last operation of the unit once turned off.
- High-quality Japanese ALPS motor potentiometer.
- Thickly silver-plated signal cable has been used. Equipped with easily-installed tube cover for protection.
Listening
The Cayin CS-88A KT88 offers a listening experience that clearly stands out from conventional transistor amplifiers. Tests conducted by specialized magazines highlight the amplifier’s ability to give listeners “goosebumps” during musical playback, demonstrating its capacity to convey musical emotion with rare intensity.
The frequency response extends from 10 Hz to 42 kHz (-3 dB), ensuring faithful reproduction of the entire audible spectrum and beyond. The harmonic distortion rate of 1% at 1 kHz may seem high compared to modern transistor amplifiers, but this characteristic paradoxically contributes to the warmth and musicality unique to tube amplifiers.
The wide-bandwidth output transformers, specially designed for the CS-88A KT88, enable remarkable finesse in reproduction, revealing the finest details of recordings without ever becoming overly analytical. The stereo image unfolds with breadth and precision, creating a particularly convincing three-dimensional soundstage.
The signal-to-noise ratio of 93 dB ensures a silent background, allowing musical micro-details to be fully expressed. This feature, combined with the 300 mV input sensitivity, guarantees optimal compatibility with most modern sources without the risk of annoying background noise.
Specifications
General Information
- High-end tube amplifier, entirely hand-built
- Point-to-point construction with high-quality wiring
- Ideal for audiophiles seeking warmth, precision, and power
- Key features:
- 100% analog tube amplification, handcrafted
- Selectable triode / ultralinear modes
- Simplified bias adjustment and monitoring
- Compatible with EL34 / KT88 tubes
- User comfort (memory, remote control, protective cover)
- Audiophile design with high-quality components
Amplification and Tubes
- Preamplification stage:
- 2 x 6SL7 tubes
- 2 x 6SN7 tubes
- Smooth, detailed, and musical sound
- Amplification stage:
- 4 x KT88 / 6550EH tubes in push-pull class AB1 configuration
- External tube selector for EL34 / KT88 compatibility without complex adjustment
- Operating modes:
- Triode mode: 27 W + 27 W (RMS)
- Ultralinear mode: 48 W + 48 W (RMS)
- Integrated triode / ultralinear selector to tailor the sound
Connectivity and Use
- Operating modes:
- Integrated amplifier
- Power amplifier (power amp mode)
- Inputs:
- Built-in phono input
- Dedicated preamplifier input (pre-in)
- Electrical characteristics:
- Input impedance: 100 kΩ
- Input sensitivity: 300 mV (integrated mode), 1000 mV (pre-in mode)
- Output impedances: 4 Ω and 8 Ω
Audio Performance
- Frequency response: 10 Hz – 42 kHz (-3 dB)
- Total harmonic distortion: 1% at 1 kHz
- Signal-to-noise ratio: 93 dB
Power Supply and Protection
- Transformers:
- 2 wide-bandwidth EI output transformers
- Specially designed toroidal transformer for power supply
- Protection system:
- Soft start function (30 seconds) to preserve the tubes
- Memory of operating state after shutdown
- Maximum power consumption: 280 W
- External bias adjustment with built-in meter on the top panel
Construction and Components
- High-precision ALPS motorized potentiometer (Japan origin)
- Internal wiring with thick silver-plated cable for better signal transmission
- Easily installable tube protective cover
- Refined and robust design for excellent heat dissipation
- Designed for easy tube replacement
- Remote control included for convenient use
Physical Characteristics
- Dimensions (W × D × H): 420 × 382 × 195 mm
- Net weight: 28 kg
