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The A-series amplifiers are muscular in characterand musical by nature. They are multi-talented performers more thancapable of supplying the power behind the sonically demandingaspects of surround sound home cinema or recreating, withremarkable finesses and transparency, the ‘immediacy’ of a liveperformance. The A5 delivers 5 channels of amplification with 225continuous watts per channel into 8 ohms. 5 channels, RCA and XLRinputs, 225 continuous watts per channel into 8 ohms, 4-layercircuit board for low source impedance, Statement-level parts withhand-matched input stage devices, 2-ohm capability.
“NO FUSE” DESIGN
A2 and A5 amplifiers are Direct-Connected to thepower supply capacitor bank, keeping output impedance remarkablylow while making more power available to the amplifier. Even whenthe amplifiers are driving lower- or complex-impedance loads, theresult is audibly superior performance. If an output short circuitdoes occur, only the AC line breaker will trip—there are no fusesto replace. The standby low-power supply is protected byself-resetting Positive Temperature coefficient thermistors (PTCs).Once the condition that tripped the PTC disappears, the circuitrestores itself automatically.
HAND-MATCHED COMPLEMENTARY INPUT DEVICES
Heat shrink tubing applied around each criticalpair of hand-matched complementary input devices ensures superiorthermal tracking and lower voltage offset and distortion.
MASSIVE OVERSIZE POWER SUPPLY RESERVOIRS
To store all of the energy required for the immensebursts of power required in movie special effects or the taxingcrescendos in music, large banks of capacitors are required.
A2 and A5 amplifiers employ 16,400 micro farads(μF) of capacitance per channel. (That’s over 80,000 μf alone inthe A5!) With so many joules of power in reserve, these amplifiersare able to instantly and effortlessly deliver full, uninterruptedbursts of power.
OVERSIZE OUTPUT CONNECTIONS
Custom-designed oversize gold-plated binding postsensure full power delivery at all times. They’re easy to use whilefacilitating large speaker cable connectors.
Computer-designed and modeled to maximize contactarea for exceptional heat transfer, these amplifiers run cooler forgreater reliability without the need for a noise-inducing fan.
DESIGNED AND BUILT IN NORTH AMERICA
Heavy-gauge 14-awg steel chassis with fine-grainbrushed aluminum cover and extruded aluminum handles.
Includes IEC detachable AC female sockets andhigh-power, high-quality 14-awg AC cords.
Can be orderedwith rack-mount handles. (See Dealerfor more information.)
EIGHT BIPOLAR OUTPUT DEVICES PER CHANNEL
Solid-state amplifiers get their power from theoutput devices used in the amplification stage—the greater thenumber of devices per channel, the greater the availablehigh-current power for the crescendos in music or the thrills,thunder and explosions in movies. Performance is simply moreeffortless. It also means that the amplifiers run cooler, makingthem more reliable. A2 and A5 amplifiers each have eight bipolaroutput devices per channel ensuring tremendous current reserves andoutstanding reliability.
FOUR-LAYER CIRCUIT BOARDS
Our hand-designed four-layer military spec(FR-4-rated) glass-epoxy circuit boards with plated through-holesmakes extensive use of groundplanes to ensure excellent separationbetween amplifier channels. The result is exceptionally low noiseand low crosstalk between channels, as well as between inputs. Thismulti-layered design also offers increased protection fromelectrostatic discharge.
STATE-OF-THE-ART MODULAR DESIGN
A2 and A5 amplifiers reflect the benefit of acommon modular design enhanced by our highly refined amplifiercircuit topology. Each amplifier channel is self-contained on itsown board and heatsink. In the rare event that servicing isrequired, it can be done quickly and easily by a qualifiedtechnician, minimizing the down time of your system.
120 dB SIGNAL-TO-NOISE RATIO
Transformer-induced noise at the bass frequenciesof 60 Hz, 120 Hz, and 180 Hz has effectively been eliminated. As aresult, A2 and A5 amplifiers boast vanishing noise and remarkablylow levels of Total Harmonic Distortion. The reproduction of subtleharmonic structures in each of these powerful amplifiers revealsextraordinary spatial ambience and soundstage dimension.
ULTRA-QUIET TOROIDAL POWER SUPPLY
Thanks to massive conservatively rated toroidalpower supplies designed with high rail voltages, A2 and A5multichannel amplifiers provide ultraquiet performance.Transformers are shaped to minimize stray electromagnetic radiationand tuned to minimize hum.
REFERENCE-QUALITY INPUT CONNECTION
Gold-plated female RCA jacks on the A2 and A5provide a high-quality input connection. True-Balanced XLRconnections ensure the lowest level of noise and hum possible.
Our unique auto-sensing technology means noswitches. Just plug in either the RCA or XLR connector and ourauto-sensing technology will automatically select the rightinput.
POWER ON/OFF THREE WAYS
A2 and A5 amplifiers can be powered On/Off threeways:
Manually, with the On/Off switch on the frontpanel.
Remotely, via the 12-volt trigger input on therear.
Automatically, with our patented Auto-On/Offcircuit—an incoming audio signal immediately switches it on, andapproximately 20 minutes after the audio signal ends, it simplyswitches off