Specifications

“Keep it Simple” Design Philosophy
While all parts are of the finest quality and tolerance, Anthem
™
Statement
designers use the fewest possible number of parts in the signal path to
maintain the integrity of the sound. A2 and A5 amplifiers reveal a profound
sense of musical purity, transparency and naturalness.
Eight Bipolar Output Devices Per Channel
Solid-state amplifiers get their power from the output
devices used in the amplification stage—the greater the
number of devices per channel, the greater the available
high-current power for the crescendos in music or the
thrills, thunder and explosions in movies. Performance is
simply more effortless. It also means that the amplifiers
run cooler, making them more reliable.
A2 and A5 amplifiers each have eight bipolar output devices
per channel—that’s 40 devices in the A5 alone—ensuring
tremendous current reserves and outstanding reliability.
Vanishing Noise and Distortion
Transformer-induced noise at the bass frequencies of 60 Hz, 120 Hz,
and 180 Hz has effectively been eliminated. As a result, A2 and A5
amplifiers boast vanishing noise and remarkably low levels of Total
Harmonic Distortion. The reproduction of subtle harmonic structures in
each of these amplifiers reveals extraordinary spatial ambience and
soundstage dimension.
Remarkable Level of Quiet
Signal-to-noise ratio in the A2 and A5 amplifiers is 120 dB. Music and
movie soundtracks simply appear out of dead silence, allowing you to
become lost in the emotion of the original performance.
State-of-the-Art Modular Design
A2 and A5 amplifiers reflect the benefit of a common modular design
enhanced by our highly refined amplifier circuit topology. Each amplifier
channel is self-contained on its own board and heatsink. In the rare event
that servicing is required, it can be done quickly and easily by a qualified
technician, minimizing the down time of your system.
Ultra-Quiet Toroidal Power Supply
Thanks to massive, conservatively rated toroidal power supplies
designed with high rail voltages, A2 and A5 multichannel amplifiers
provide ultra-quiet performance. Transformers are shaped to minimize
stray electromagnetic radiation and tuned to minimize hum.
Four-Layer Circuit Boards
Our hand-designed 4-layer FR-4 glass-epoxy circuit boards with plated
through-holes makes extensive use of groundplanes to ensure excellent
separation between amplifier channels. The result is exceptionally low noise
and low crosstalk between channels, as well as between inputs. This multi-
layered design also offers increased protection from electrostatic discharge.
Reference-Quality Input Connection
Gold-plated female RCA jacks on the A2 and A5 provide a high-quality
input connection. True-Balanced
™
XLR connections ensure the lowest
level of noise and hum possible.
Our unique auto-sensing circuit means no switches. Just plug in either
the RCA or XLR connector and our auto-sensing circuit will automatically
select the right input.
Power On/Off Three Ways
A2 and A5 amplifiers can be powered On/Off three ways: manually, with
the On/Off switch on the front panel; remotely, via the 12-volt trigger
input on the rear; or automatically, with our patented Auto-On/Off
circuit—an incoming audio signal immediately switches it on, and
approximately 20 minutes after the audio signal ends, it simply switches off.
A2 / A5
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