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Push the Power of Audio Control.
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.
And it includes new generations of many of Anthem’s award-winning, audiophile-loving, review-praised digital signal processing innovations, delivering a noticeably higher level of audio performance realism.
The new STR Preamplifier drives all of your entertainment options today, and tomorrow.
STR Features & Functions
Conversion from Digital to Analog
STR Preamplifier includes a high-resolution preamplifier 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
The STR Preamplifier 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 for seamless subwoofer blending, achieving 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.
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.
The phono preamplifier is suitable for moving magnet and high-output moving coil cartridges
|Input Impedance||100 Ω (MC), 47 kΩ (MM)|
|Input Capacitance||270 pF (MM)|
|Maximum Input (at 1 kHz for <0.1% THD 20 Hz - 20 kHz)||3.6 mV (MC), 37.7 mV (MM)|
|Gain (default at 1 kHz, user adjustable ± 20 dB)||55 dB (MC), 35 dB (MM)|
|RIAA Response||± 0.1 dB (20 Hz to 20 kHz)|
|THD+N (at 1 kHz, 20 Hz - 20 kHz BW, 2 Vrms output)||0.008% (MC), 0.005% (MM)|
|S/N Ratio (at 1 kHz, IEC-A, 2 Vrms output)||82 dB (MC), 96 dB (MM)|
|digital-in, 192 kHz||10 Hz - 50 kHz (+0.00, -0.50 dB)|
|digital-in, 96 kHz||10 Hz - 45 kHz (+0.00, -0.50 dB)|
|digital-in, 44.1 kHz||10 Hz - 20 kHz (+0.00, -0.03 dB)|
|analog-in, DSP mode||10 Hz - 40 kHz (+0.02, -0.20 dB)|
|analog-in, direct mode||10 Hz - 80 kHz (+0.00, -0.10 dB)|
|THD+N (at 1 kHz, 20 Hz - 20 kHz BW, 2 Vrms output)|
|digital-in, 44.1 kHz, 0 dBFS||0.0008%|
|analog-in, DSP mode, 1 Vrms input||0.0020%|
|analog-in, direct mode, 1 Vrms input||0.0020%|
|SNR (at 1 kHz, IEC-A, 2 Vrms output)|
|digital-in, 44.1 kHz, 0 dBFS||112 dB|
|analog-in, DSP mode, 2 Vrms input||110 dB|
|analog-in, direct mode, 2 Vrms input||120 dB|
|Maximum Output (<0.1% THD)||2.2 Vrms except analog-direct 3.3 Vrms|
|XLR Configuration||Pin 1: Ground, Pin 2: Normal, Pin 3: Inverted|
|THD (100 W)||0.002% (1 kHz), 0.015% (20 kHz)|
|IMD (100 W)|
|ITU-R (19 kHz + 20 kHz)||0.0007%|
|SMPTE (60 Hz + 7 kHz)||0.005%|
|SNR (IEC-A, ref. 200 W)||114 dB|
|Frequency Response (20 Hz - 20 kHz)||± 0.1 dB|
|Power Bandwidth (-3 dB at 200 W into 8 ohms)||80 kHz|
|Slew Rate||30 V/μs|
|Damping Factor (20 Hz - 1 kHz)||330|
|Channel Separation||101 dB (100 Hz), 61 dB (10 kHz)|
|120 V version:||In countries where the line voltage is 120 V, this product operates from a single phase AC power source that supplies between 108 V and 132 V at a frequency of 60 Hz.|
|220-240 V version:||In countries where the line voltage is 220, 230, or 240 V, this product operates from a single phase AC power source that supplies between 198 V and 264 V at a frequency of 50 Hz.|
|Standby||0.38 W (120V), 0.45 W (240V)|
|Standby + Network||1.1 W (120V), 1.2 W (240V)|
|Typical Use||250 W|
|High Output||500 W|
|Height||6-3/4” (17.2 cm)|
|Width||17” (43.2 cm)|
|Depth (not including power cord)||17-1/2” (44.5 cm)|
|Weight (unpacked)||40 lb (18 kg)|