I bought the LS-7 earlier this year. It has served nicely in my two-channel system, providing nice sound from four 6DJ8 or 6922 tubes. The included tubes are a pair of Amperex 6DJ8s for the primary V1 & V2 sockets (input stage), and a pair of Electro-Harmonix 6922s for the V3 & V4 sockets (cathode follower).
I do not have the original box, but will pack the unit well so that it arrives safely at your door.
Specifications (from
http://www.arcdb.ws/LS7/LS7.html):
Frequency response ± .5dB, 1.0Hz to 100kHz -3dB points below 0.1Hz and above 300kHz
Distortion (THD) Less than .01% at 2V RMS output. (Typically .005% in midband)
Noise & hum 15µV RMS maximum IHF weighted noise at main output with gain control minimum (more than 102dB below 2V RMS output)
Gain Main output - 13dB unbalanced
Tape output - 0dB
Input impedance 100K ohms.
Output impedance 200 ohms main output. Recommended load 60K ohms and 100pF (20K ohms minimum and 1000pF maximum)
Output polarity
Maximum inputs 20V maximum
Rated outputs 2V RMS 1Hz to 100kHz, all outputs, 60K ohm load (maximum output 25V RMS at 1/2% THD into 100K ohms)
Power supplies Electronically-regulated low and high voltage supplies. Line regulation better than .01%
Tube complement (4) 6922/E88cc dual triode
Power requirements 100-135VAC 60Hz (200-270VAC 50/60Hz) 25 watts minimum
Other Inputs (5): tape, tuner, CD, video, aux
Controls: Gain, input selector
Toggle switches: power/off, mute/operate
Dimensions 19" (48 cm) W x 5 1/4" (13.4 cm) H (standard rack panel) x 10 1/4" (26 cm) D. Handles extend 1 1/2" (3.8 cm) forward of front panel. Rear chassis fittings extend 1/2" (1.3 cm).
$650 + shipping
(!!SOLD!!)
