ModWright Instruments LS 100 Owner's Manual - Introduction:
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Introduction:
Thank you for purchasing a ModWright Instruments product. This unit is designed to offer high
performance and exceptional reliability.
The LS 100 preamplifier offers high bandwidth, low distortion, and exceptional musicality. We
have designed this preamp to allow the reproduction of recordings that is accurate, transparent
and musical.
The LS 100 also includes a number of features not found on simpler linestage-only designs:
Remote power.
Balance control (may be bypassed via remote or front panel controls).
Remote volume control.
Remote mute.
Remote input select.
Remote 12V triggers (2).
Monitor input select.
Class A discrete headphone amp - fed via tube output.
Opt. (Upgrade Option) input for future addition of internal Phono Stage or DAC.
Notes:
Rectangular plate is installed over the Opt. input on the back panel of the unit. This is removed
when installing optional Phono Stage or DAC upgrade. There is room for two RCA connectors
for phono or two connectors for digita. Upgrades are user installable. The optional DAC or
Phono Stage upgrade board fits onto a pair of 20-pin headers on the main tube board and signal
input connectors are secured to back panel of preamp enclosure. Both upgrade options are
entirely user/dealer installable.
Design is phase inverting and this may be addressed by reversing polarity at both speaker
cables, either at amp(s) or speakers.