Description
Tube stereo line stage.
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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. |
Introduced
1996
Discontinued
1999
Revisions
-
Options
Platinum grey faceplate
MSRP (US new retail)
$2,995
Specifications
| 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. |
| Output polarity | |
| 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. |
Reviews
Issue 111Pictures
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