220-230v with complete spare sets of tubes. The front volume attenuator has been bypassed, as suggested on Jeff Day's reviews (easily re-soldered). Hardwood sides are unmarked, paint color is in very good condition. Close inspection reveals clearcoat showing minor signs of use - difficult to see or photograph at 1m, I've added closer photos.
A variety of valves can be used by switching two selectors. On the amp is a set of four Russian 6N3C-E / 5881, four Sylvania 6CS7 and one Sylvania 6CJ3. Also included are spares: a set of of Shuguang 350C plus single spare, a set of Tung Sol 6CS7, and a single spare Sylvania 6CJ3.
Optionally 350B, KT66, KT88 and 6550A can be used with the valve cage removed. 6L6, EL34 / 6CA7, KT77, 6L6GB can also be used with the cage in place. A LED indicator at the foot of each tube will change its colour and show you which tube is in use.
STEREO / MONO SELECTOR SWITCH
You can use CS-660P as a monaural power amplifier by changing the selector switch giving an 80W output power (40W x 2 when used as a stereo power amp)
FLAT AND WIDE FREQUENCY RESPONSE
A wide frequency response from 10Hz to 100KHz (-0dB) caters for digital audio formats such as SACD/HDCD.
Twin-triode tube 6CS7 for the first-stage amplification.
WBT speaker terminals.
Large capacity choke-coil: 400mA
Dumper tube 6CJ3 is applied to delay a supply of high voltage (B-Voltage) to output tubes in order to protect output tubes from damage and to increase tube life.
All high-end audio grade electrical components (condensors, resistors)
Operation indicator lights up when the tubes are warmed up.
(8) Russian NOS 6N3-CE
(5) Shuguang 350C
(4) Sylvania 6CS7
(4) Tung Sol 6CS7
(2) Sylvania 6CJ3
OUTPUT POWER - (STEREO/MONO SELECTOR SWITCH) Stereo 40W x 2 (KT-66) at 1KHz. Monaural 80W X 1 (KT-66) at 1KHz.
FREQUENCY RESPONSE -10Hz - 180KHz. (-3dB)
INPUT SENSITIVITY 1.5V at 40W
INPUT IMPEDANCE 100K Ohms.
OUTPUT IMPEDANCE 4/6/8/16 Ohms (Selectable)
POWER CONSUMPTION 230W
Double layer box shipping dimension 31 x 41 x 54 cm 18kg.
ADD International Economy Courier (around 5 working days) - Singapore: US$420, UK: US$450, Australia: US$200. Enquire for otheer destinations. Paypal fees, add 4%
CS-660P selected by 6-moons as the best amp of 2008.