Cayin 688R Integrated Amplifier
The 688R is even more powerful than the A-88T, with a potted toroidal power supply and potted output transformer for each individual channel.
This device is loaded with eight KT88 output tubes used for Class AB1 push-pull amplification. Output impedance is switchable between 2, 4, or 8 Ohms, and listeners can also choose between ultralinear and triode output modes. Four 12AX7s and two 6N6s are used in the built-in preamplifier. The 688R includes quality point-to-point wiring with premium capacitors and resistors. The unit is remote-controlled and comes with a detachable IEC-type power cord.
|Device:||Integrated vacuum tube amplifier|
|Frequency range:||20 Hz - 30 kHz|
|Total harmonic distortion (THD):||1% (1 kHz)|
|Unweighted signal-to-noise ratio:||89 dB|
|Input impedance:||100 kOhm|
|Output impedance:||2, 4, 8 Ohm|
|Input sensitivity:||400 mV|
|Output power (RMS):||2 x 100 Watt @ 8 Ohm (Ultralinear) |
2 x 50 Watt @ 8 Ohm (Triode)
|Input power:||440 Watt|
|Dimensions:||17.25 x 8.00 x 19.5 in|