DESCRIPTION

The 688R integrated is a true dual mono design, with a potted toroidal power supply and potted output transformer for each channel. It has eight KT88 output tubes used for Class AB1 push-pull amplification. Output impedance is selectable, with 2, 4 and 8 ohm taps. It's also switchable between Ultralinear and Triode output modes. A preamp input also allows the 688R to function solely as a power amp - otherwise, four 12AX7s and two 6N6s are used in the built-in preamplifier. The faceplate includes tone controls for both treble and bass. 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.

Power Output: 2×100w ( 8O ULTRALINEAR) (KT-88 Tubes) 2×50w ( 8O TRIODE) Frequency Response: 20Hz~30kHz THD:1%(1kHz) Input Sensitivity: 400mV/100k O (Line input, tape in) Input Impedance: 100KO Output Impedance: 2O,4O & 8O S/N Ratio: 89dB Dimensions: 17 1/4"× 8"× 19 1/2" (W, H, D) Weight: 78 lbs Power Consumption: 440w