Audio Research Reference 160S Stereo Power Amplifier

There are amplifiers that play music, and then there are amplifiers that create an experience. The Audio Research Reference 160S is firmly in the latter category. It is a visual and sonic masterpiece that distills the groundbreaking performance of the legendary Reference 160M monoblocks into a single, stunning stereo chassis. With its radical transparent faceplate revealing the soft glow of its KT150 vacuum tubes, the REF 160S is a window into the soul of the music. It delivers a breathtaking 140 watts per channel of pure tube power, rendering performances with a level of transparency, dynamic realism, and holographic imaging that is the hallmark of the Reference series. This is not just an amplifier; it is an event.

Key Features

• Radical Transparent Faceplate: A stunning etched acrylic front panel offers a captivating, unobstructed view of the glowing KT150 vacuum tubes.
• Dual GhostMeters®: Unique, floating power meters are etched into the transparent faceplate, appearing to hover in front of the tubes and providing a beautiful view of the power output.
• Pure All-Tube Signal Path: A meticulously designed circuit featuring a matched quad of KT150 output tubes and two 6H30 driver tubes for a rich, natural, and immensely powerful sound.
• Potent 140 Watts Per Channel: A massive power output capable of driving even the most demanding loudspeakers with absolute authority and grace.
• Proprietary Auto-Bias Circuit: A smart, self-adjusting bias circuit constantly monitors and corrects for tube wear, ensuring peak performance and eliminating the need for manual adjustments.
• Switchable Triode-Pentode Modes: A front-panel switch allows you to choose between the full power of Pentode mode (140W) or the rich, nuanced presentation of Triode mode (70W).
• Monoblock Bridgeable: Can be combined with a second REF 160S and bridged to create a formidable 300-watt monoblock amplifier.
• Massive Power Supply: An enormous power supply with approximately 900 joules of energy storage delivers instantaneous current for breathtaking dynamics.
• Selectable Fan Speeds: A quiet, three-speed fan system allows you to tailor the cooling to your environment and listening levels.
• Single-Ended and Balanced Inputs: Features both single-ended (RCA) and balanced (XLR) inputs for universal preamplifier compatibility.
• Separate 4, 8, and 16-Ohm Taps: Dedicated speaker output taps ensure a perfect impedance match for any loudspeaker.
• Premium German Build: Meticulously handmade in Germany, housed in a screwless, brushed aluminum chassis with a minimalist design.

A Window Into the Music

The Reference 160S is an amplifier that engages the senses even before a note is played. Its revolutionary transparent faceplate removes the barrier between the listener and the technology, revealing the warm, inviting glow of the four KT150 output tubes. Etched directly onto this clear panel are the new GhostMeters®, which create a beautiful illusion of floating power meters, their needles dancing in front of the tubes. This stunning design is more than just an aesthetic choice; it’s a statement about the transparency and purity of the sound within.

The Power and the Glory

At its heart, the REF 160S is a powerhouse. Its four KT150 output tubes, governed by a massive power supply with nearly 900 joules of energy storage, deliver a commanding 140 watts per channel. This is power that translates not just to loudness, but to an effortless sense of control and dynamic freedom. You will hear it in the deep, impactful bass, the unrestrained swell of a full orchestra, and the startling realism of a live performance. It drives any loudspeaker with an authority that allows the music to breathe and expand into a vast, holographic soundstage.

Intelligent, Effortless Performance

The Reference 160S is designed for the music lover who wants ultimate performance without the hassle of constant adjustments. At its core is a proprietary auto-bias circuit that is a marvel of engineering. This intelligent system constantly monitors the KT150 output tubes, automatically and precisely adjusting their bias in real-time to compensate for tube wear and fluctuations in your home's power line. This ensures that the amplifier is always operating at its absolute peak performance, day in and day out, without you ever having to touch a multimeter or a screwdriver.

Two Amplifiers in One

The REF 160S is a remarkably versatile amplifier, capable of adapting to your speakers, your music, and your mood. A simple front-panel switch allows you to change the amplifier's operation between two distinct modes. In Pentode mode, it delivers the full, authoritative 140 watts per channel, perfect for driving demanding speakers or for listening to large-scale orchestral music. Switch to Triode mode, and the amplifier delivers 70 watts of pure, harmonically rich sound, ideal for more intimate recordings, vocals, and high-efficiency speakers. It’s like having two world-class amplifiers in one chassis.

The Listening Room Difference

When you shop with The Listening Room, you get more than just gear. As a third-generation, family-run business with a passion for music and decades of experience, we offer personalized service that goes far beyond the sale. Call, text, or email, and you’ll get a real human who knows this equipment inside and out. From in-store demos to curated home system design and wide-radius delivery, we’re here to help you get the absolute best out of your purchase.

Specifiactions