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STR Preamplifier (S)
(Receiver/Amps - Pre-Amplifier)

The revolutionary STR Preamplifier is a new type of audio component that gives you more control and more refinements, including more connection options and more advanced technology, in a single, easy-to-use component.

Designed, engineered, and Crafted in Canada, the STR Preamplifier combines the benefits of an advanced preamp with the power of a processor, as well as functions like leading-edge DAC, onboard Anthem Room Correction (ARC™), customizable bass manager for mono or stereo sub outs, MM and MC phono inputs—far more than the average preamplifier.

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Conversion from Digital to Analog

STR Integrated Amplifier includes a high-resolution pre-amplifier and a digital section, with support for asynchronous USB up to 32-bit/384 kHz PCM and DSD 2.8/5.6 MHz sources. This high-quality USB audio input transforms digitally stored audio from your Windows or Mac computer into warm, natural analog sound.

Anthem Exclusive Innovations

The STR Preamplifier includes the newest and most powerful generation of Anthem Room Correction (ARC), with 50% more processing power than any other version of ARC. This proprietary calibration tool, with its easy-to-use interface, automatically shapes the acoustic signature of your speakers for the best possible sound quality in your unique listening space.

This is especially important for the lower frequencies.

Other innovations include a high- resolution preamplifier and digital section, which supports asynchronous USB up to 32-bit/384 kHz PCM and DSD 2.8/5.6 MHz sources, and uses signal processing that employs 64-bit accumulation and feedback to preserve the finest detail in the music and to avoid degradation. The digital to analog conversion section was designed to faithfully duplicate all the sounds in the original source.

To help achieve that effect for all input resolutions, a dedicated asynchronous 32-bit / 192 kHz sample rate conversion is used. This way, the DAC stage’s anti- imaging filter is optimized for this sampling rate alone, resulting in an audio frequency range that’s unmatched in purity, regardless of input format. In the process, the data gets reclocked, providing immunity from performance-marring source jitter.

Through the rest of the DAC circuitry, thin film high precision resistors and super low noise op-amps are used for lowest distortion, lowest noise, and most transparent sound. Other DAC units may boast about the performance of the DAC chip all by itself, but we view DAC stage design as a whole — there are no crippling bottlenecks anywhere in the DAC stage of the STR Preamplifier.

Aside from its cutting-edge technology, one look tells you that the STR Preamplifier is a different animal altogether. The display on the front panel gives you surprisingly easy control through an easy to navigate setup menu, and the luxurious and elegant new contemporary design is available in two beautiful finishes, Black or Silver.

More Subwoofer Options

STR Integrated Amplifier gives you more options for subwoofer configuration. Use one subwoofer or two for both channels, or two independent right-and-left channel specific subwoofers. The bass management in conjunction with ARC is uniquely engineered engineered for seamless subwoofer blending, achieving an incredibly accurate and lifelike performance.

Moving Coil and Moving Magnet Phono

Anthem has also taken into consideration the resurgent popularity of vinyl records, and has included separate inputs for moving magnet and moving coil cartridges, with the phono section completely shielded to maintain a clean signal. The transparency and refinement of the STR Preamplifier reveals the hidden magic of classic media.

In addition, the phono curve is continuously adjustable for proper playback of any record that predates the RIAA equalization standard.

Home Theater Bypass

The concept of combining a stereo preamplifier with a home theater system is taken to a whole new level. The STR Preamplifier supports two subwoofer channels in addition to the two fronts. XLR as well as RCA connection is provided for all channels, and HT Bypass mode engages while the preamp is on standby. This way, you don’t have to turn it on when watching movies. To allow the purest signal path, relays are employed to hard-wire the input jacks to the outputs — the STR Preamplifier essentially becomes a straight wire.

Premium Components

Clarity is maintained using carefully selected components, many of them engineered exclusively in-house at Anthem. We believe that two-channel listening demands attention to detail, with flawless signal integrity being the benchmark of stereo performance. To that ultimate end, the Anthem STR Preamplifier is designed with the shortest possible signal paths, and differential analog to digital circuitry to cancel artifacts and keep noise to a minimum.

The Crafted in Canada Difference

The STR Preamplifier is designed, engineered and manufactured in Canada and is part of premium STR Series by Anthem, the leader in audio power and control.

What is ARC?

Simply put, Anthem Room Correction quickly “corrects” the effects that reflective surfaces such as walls, floors, and ceilings have on the sound radiating from a loudspeaker. Removing the effects of these obstacles allows your audio equipment to achieve a more natural sound in any room, as close to the lab standard as possible.

On a more complex level, ARC is a proprietary digital signal processing software that works with a specially-engineered calibration microphone and your PC to quickly and easily optimize audio for your unique listening space. Anthem engineers developed the ARC system while researching how to replicate the audio-lab standard of performance in non-lab environments. This groundbreaking research was conducted in conjunction with the National Research Council of Canada, the Canadian government’s research and technology organization.

Anthem engineers realized that real-world listening experiences had little in common with the controlled environment of the audio lab. That’s because even the best loudspeakers are affected by room anomalies like furniture. These obstacles cause standing waves, resonances, and reflections that can color the sound you hear. Imagine the sound waves coming from your speakers as ripples on a water surface. That makes it easy for you to understand how the ripples of sound bounce off any obstruction they encounter. You can immediately see the benefit of removing the obstacles.

ARC digitally compares a room’s acoustic signature to that of the lab standard. It measures the response of each speaker relative to the listening area. Then it uses advanced algorithms to eliminate the negative effects of the obstacles in the room, adjusting response and correcting phase effects. When ARC removes the obstacles, what’s left is the lab standard performance.

How Does ARC Work?

RC digitally compares a room’s acoustic signature to that of the lab standard. It measures the response of each speaker relative to the listening area. Then it uses advanced algorithms to eliminate the negative effects of the obstacles in the room, adjusting response and correcting phase effects. When ARC removes the obstacles, what’s left is the lab standard performance.

ARC is easy to use, and just a few simple steps can optimize your speakers for your unique listening space. ARC is sophisticated, one of the most accurate and detailed digital room correction technologies available today. ARC will work tomorrow, too; with constant advances and updates available for download on the Anthem website.

IMPORTANT: Images may not reflect actual product.
GENERAL
Sound channels 2
Power Output DSP Mode:
• Maximum Input (at 1 kHz for <0.01% THD 20 Hz - 20 kHz): 3.6 mV (MC), 38 mV (MM)
• THD+N (at 1 kHz 20 Hz - 20 kHz BW, 2 Vrms output): < 0.015% (MC), < 0.003% (MM)
• THD (at 1 kHz 20 Hz - 20 kHz BW, 2 Vrms output): 0.001% (MC), 0.001% (MM)
• SNR (IEC-A, 2 Vrms output): 86 dB (MC), 103 dB (MM)

Direct Mode:
• Maximum Input Direct Mode (at 1 kHz for <0.01% THD 20 Hz - 20 kHz): 11.8 mV (MC), 129 mV (MM)
• THD+N(at 1 kHz 20 Hz - 20 kHz BW, 2 Vrms output): < 0.008% (MC), < 0.002% (MM)
• THD(at 1 kHz 20 Hz - 20 kHz BW, 2 Vrms output): 0.001% (MC), 0.001% (MM)
• SNR (IEC-A, 2 Vrms output): 90 dB (MC), 110 dB (MM)
Power consumption (max) 10 W
Frequency range (Hz) Digital-in, 192 kHz: 10 Hz - 50 kHz (+0, -0.5 dB)
Digital-in, 96 kHz: 10 Hz - 45 kHz (+0, -0.5 dB)
Digital-in, 44.1 kHz: 10 Hz - 20 kHz (± 0 dB)
Analog-in, DSP mode: 10 Hz - 40 kHz (+0.00, -0.20 dB)
Analog-in, direct mode: 10 Hz - 80 kHz (+0.00, -0.10 dB)
Additional information • High-resolution preamplifier section
• Anthem Room Correction (ARC™) optimizes in-room response for perfect sound
• Bass management for two subwoofers, in mono or stereo
• Up-sampling of lower-resolution sources to 32-bit/192kHz
• Asynchronous USB Audio Input supports 32-bit/384kHz PCM, and DSD 2.8 / 5.6 MHz sources
• Coaxial, optical, and AES/EBU inputs up to 192kHz
• MM and MC phono, balanced XLR, and single-ended analog inputs
• Six pre-RIAA curves plus adjustable settings for playing older records accurately
• Adjustable analog input levels to match sources, minimize noise and prevent distortion
• Graphic front panel display for easy setup and navigation
• Home Theater Bypass Mode works without having to turn power on and includes RCA/XLR input for two subs
• Create up to 30 virtual inputs for setup flexibility
• Controllable via Ethernet, RS-232, or supplied IR remote
I/O
AM/FM No
Phono input Yes
Composites Audio Inputs (Analog) 4
Optical digital inputs 2
Coaxial digital input 2
XLR inputs 5
XLR outputs 4
Network Yes
RS-232 Yes
USB Yes
DIMENSIONS
Width 17.01 inch(es) / 43.2 cm
Height 3.91 inch(es) / 9.93 cm
Depth 14.84 inch(es) / 37.69 cm
Weight 16.76 lb(s) / 7.6 kg

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