CS-55A Tube Amp



Integrated Amplifier

The heart of this amp is based upon a push pull design with KT88 performing the amp duty. However with a flick of a switch you can replace the KT88 for EL34 Valves. Then with the manual Bias adjustment you can get them sound as sweet as ever.

As with the A-55TP the Cayin CS-55A has a built in Phono Stage for easy hookup to play your vynil. This is not some little simpple circuit as this Moving Magnet stage really will get the most of the grooves and is a really nice way to unclutter your system with this phono stage onboard directly connected to the PreAmp stage.
The really new nice touch is the addition of a built in DAC to play your Music files stored on your computer. A great bit of care has gone into the design of this as it is a 32bit/384kHz DAC. Having a DAC built in to the Preamp stage does definitely have some advantages. No need. No need to design an output buffer to hook into a line stage like stand alone DAC’s needs to do. Having it directly connect avoids this and also the signal path is so very short which is never a bad thing.

Now instead of having to have a additional headphone amp for those special times when you want to have your glorious music private, you just have to plug your cans into the CS-55A and off you go. This is truly a well engineered high performance amp that can take care of all your needs.


All Vacuum Tube Design - All Hand Made
SystemVacuum Tube Integrated Amplifier
with Triode and Ultralinear mode
Internal ConstructionHand made with point to point wiring
Power Output KT88: 22W Triode – 40W Ultralinear
EL34: 20W Triode – 38W Ultralinear
Input TerminalUSB, CD, Phono, Aux
Vacuum TubeKT88: 4 x KT88, 2 x 12AU7/ECC82, 2 x 12AX7/ECC83
EL34: 4 x EL34, 2 x 12AU7/ECC82, 2 x 12AX7/ECC83
Output Terminal4Ω , 8Ω
Frequency ResponseKT88: 5Hz – 44kHz (-3dB)
EL34: 5Hz - 48kHz (-3dB)
ChassisHeavy gauge hand rubbed and polished
THD: 1% (1kHz)Power SupplyCustom Made Toroidal
S/N Ratio: 92dBPower Consumption270W
Input SensitivityKT88: 270mV
EL34: 280mV
FinishSilver or Black
Input Impedance: 100K ΩDimensions (WxHxD)360 × 180 × 334 mm
Soft Start Circuit30 second delay for extended tube lifeWeight17kg
USB DACCompatible with Audio Class 1.0 and Audio Class 2.0
Word length:16 - 32bits
Sampling rate:44.1kHz, 48kHz, 88.2kHz,96kHz,176.4kHz,192kHz,352.8kHz,384kHz
Operating System:Windows XP®, Windows Vista®,Windows 7® , Windows 8®, Mac OS(10.6.3 and above)
PhonoInput Sensitivity:3mV Input impedance:47kΩ
RIAA Errors:Lower than ±0.25dB Total Gain:40dB
S/N ratio:68dB
Working ConditionTemperature: 0℃~40℃
Moisture: 20%~80%
Storage ConditionTemperature: -20℃~70℃
Moisture: 20%~90%


Share Button