Tube stereo line stage.
The LS15 is an all-new line-level preamplifier which replaces the LS2/2BMKII series. It features all-tube gain (12 dB standard) using four 6922 twin triode tubes in a Class A, fully differential zero feedback (balanced) circuit with electronically regulated high and low-voltage supplies. The LS15 includes handheld IR remote control of all essential front-panel functions. An onboard microprocessor controls a 70-step electronic relay attenuator and 5-position input selector. An additional Direct input (balanced) provides a highest-signal-purity path for your favorite music source. A total of two balanced and five single-ended (including tape) dedicated inputs are included.
Main outputs are balanced and single-ended, with one pair of single-ended tape outputs. Spring-activated toggle switches activate electronic relays to control key functions with minimal signal degradation. Factory-set gain of 18 dB is optional at no charge. The anodized front panel is available in natural aluminum or black, cabinet style or with rack-mount holes.
Platinum grey faceplate
MSRP (US new retail)
|Frequency response||± .5dB, 2Hz to 30kHz at rated output. -3dB points below 0.3Hz and above 80kHz.|
|Distortion (THD)||Less than .01% at 2V RMS balanced output|
|Noise & hum||25µV RMS residual IHF weighted balanced noise output with gain control at minimum, 98dB below 2V RMS output|
|Gain||Main output: 12.5dB balanced, 6.5dB SE|
|Tape output: 0dB|
|Input impedance||200K ohms balanced, 100K ohms SE|
|Output impedance||600 ohms balanced, 300 ohms SE Main (2), 40K ohms minimum load and 1000pF maximum capacitance.|
|Maximum input||14V RMS maximum balanced, 7V RMS SE|
|Rated outputs||2V RMS (1V RMS SE) into 200K ohm balanced load (maximum balanced output capability is 30V RMS at less than 1% THD at 1kHz|
|Power supplies||Electronically regulated low and high voltage supplies. Automatic 30 second warmup mute. Automatic brown-out mute.|
|Tube complement||(4) 6922/ECC88 dual triode. (Vacuum tube audio circuit, solid-state power supply)|
|Power requirements||100-135VAC 60Hz (200-270VAC 50/60Hz) 35 watts maximum|
|Other||Inputs: SE1, SE2, SE3, SE4, Bal, Direct (Bal) and Monitor (SE)|
|Outputs: 2 Main Bal, 1 Main SE, 1 Record SE|
|Dimensions||19" (48 cm) W x 5.25" (13.3 cm) H (standard rack panel) x 10.5" (26.7 cm) D. Handles extend 1.50" (3.8 cm) forward of the front panel.|
|Weight||11.6 lbs. (5.3 kg) Net; 20 lbs.(9.1 kg) Shipping.|