Audio Research LS-3

Yes, the LS-3 is a line-stage preamplifier and does not include a built-in phono stage. You will need to connect an external phono preamp to one of the line-level inputs to use it with a turntable.

The tube design provides a warm, natural, and harmonically rich sound signature. It excels at delivering a sense of depth and realism that is often preferred by listeners seeking a more organic listening experience.

Yes, the LS-3 features both RCA and XLR output connectivity. This allows you to integrate it into a wide variety of audio systems, whether you are using single-ended or balanced cabling.

The external power supply is designed to isolate sensitive audio circuitry from electromagnetic interference and power line noise. By keeping the power transformer outside the main chassis, the unit maintains higher signal integrity and lower noise floors.

No, the LS-3 does not feature a dedicated headphone output. It is designed specifically as a central hub for driving power amplifiers and main speaker systems.

No, the LS-3 does not have a built-in subsonic filter. If you are using a turntable that produces significant low-frequency rumble, you may want to ensure your phono stage or speakers can manage those frequencies effectively.