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Viola Audio Laboratories Legacy Reference Class A Mono Power Amplifier

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Legacy Reference Class A Mono Power Amplifier

Item # : VIO-LEGA

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Legacy Reference Class A Mono Power Amplifier

The Viola Legacy mono power amplifier is capable of delivering 100 watts of Class A power into 16, 8, 4 and 2 ohms. The Legacy is fully balanced design with very low distortion, wide dynamics and reproduction of low level detail. Class A operation eliminates crossover distortion inherent in Class B and Class AB designs.

Legacy Audio Design

The Legacy is a Class A biased push-pull amplifier that utilizes low global feedback. Two matched power amplifier modules that are driven into a center-tapped output transformer. This allows fully balanced operation from input to output. Soft clipping circuitry limits sonic degradation should the amplifier be overdriven. The Legacy is capable of switching to Class AB to deliver more power into demanding loads while still preserving subtle aspects of the music signal. The Legacy is protected against overvoltage, over temperature, excessive current and DC offset.

Legacy Power Supply

As with all Viola amplifiers designs, the Legacy features a choke input power supply. The Legacy power supply reduces high charging currents that are prevalent in capacitor input supplies. This minimizes intermodulation distortion on the power supply rails and ground returns. This also has the benefit of reducing stress on the power supply components. Onboard decoupling capacitors eliminate wire inductance along with film capacitors provide a uniformly low power supply impedance.

Product Details
Brand Viola Audio Laboratories
Condition Notes

Sales restrictions may apply. Please contact us for pricing and ordering information.

Weight (lb) 168.0000
Height (In) 12.2
Width (In) 17.56
Length/Depth (In) 26.5
Weight (Kg) 76.2
Height (mm) 310
Width (mm) 446
Length/Depth (mm) 673

Legacy Power Amplifier Specifications

Class of Output Operation A
IM Distortion (SMPTE) 1W to 100W <0.01%
THD <0.08% @ 20 kHz/100 watts
Frequency Response 1W into 8 ohms (10Hz - 20kHz) +/-0.25 db; 100k <-3 db
Power Bandwidth 5 Hz to 100 kHz (-3dB points)
SN Ratio <-110 db at 1 kHz / 100W; C weighted
Gain 26 dB
Input Impedance 1M Ohm / 1M Ohm balanced
Inputs 2 x Balanced - XLR
Output Connections 1 pair of binding posts for spade terminals for each impedance tap
Power Consumption Approximately 450W at idle
Weight Amplifier: 168 lbs. (76.2kg)
Dimensions Height w/Feet: 12 3/16”. (31.0 cm)
Width: 17 9/16” (44.6 cm)
Depth w/Binding Posts: 26 1/2”. (67.3cm)

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