Audio Audio Reasearch LS-12 Balanced Line Stage Preamplifier in Silver Finish come with Original Manual and New Silver Metal Remote Excellent Working Condition
I believed this is the Last Solid State Preamp from Audio Research
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The LS-12 provides a realistic lively sound stage and full robust bass response. If you’re looking to upgrade your main components, expand into a second listening room or looking to dip your toes in the water with Audio Research, the LS-12 is the Line Stage to do it with!
From Audio Research:
The fully-balanced, double-differential design is pure Class-A, utilizing all-FET circuits with unity-gain buffers between stages and a double-buffered output. Low-noise, critically matched high transconductance JFETs are used for all audio circuits, with local FET constant-current stabilization for each stage. The audio circuit is DC coupled throughout, with servo stabilization for low offset and subsonic control. Full muting protection is included for warmup stabilization and low-line voltage. Total gain is 18 dB balanced output, 12 dB via single-ended outputs.
The LS12's advanced-design power supplies use soft recovery rectifiers, highest grade "Muse" filter capacitors with our patented DEC (Decoupled Electrolytic Capacitor®) choke-decoupling, and a total of seven regulators. Mechanical vibration is carefully controlled with special Isodamp mounting for the power transformer and its own circuit board. Isodamp feet are used for the chassis. Like other Audio Research preamps, the LS12 has a removable IEC power cord, and it comes with the same remote control as the one supplied with the LS16.
All you really have to do is listen to the LS12 to appreciate what an outstanding value it provides. The LS12's sonics are remarkable from top to bottom, with startling transparency, resolution, dynamics and bass impact, speed, and control. The only blurring is the line between tube and solid-state sound: the LS12 presents soundstaging and "air" at which other solid-state preamps only hint.
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