Viola Systems Spirito Reference Series Preamplifier Manual de usuario descargar pdf (Pagina 9)

STEREO PREAMPLIFIER

CRESCENDO

The Viola Crescendo preamplier is a single chassis stereo

preamplier. The Crescendo chassis is milled from a solid

billet of aircraft grade Aluminum. This results in a very rigid

chassis with very low resonance. The Crescendo has a prism

cut machine nish and a custom Viola anodize nish.

Crescendo Audio Design

The OPA-1 module used in the Crescendo preamplier is a

discrete Class A operational amplier. The rst stage employs

a low noise FET input. This is followed by a differential voltage

gain section. The output is a high current, low output imped-

ance voltage follower which is capable of driving the most

demanding load. This results in a very open, fast and transpar-

ent sound stage.

Features

The Crescendo features a high resolution USB DAC input

capable of data streams up to 192 kHz/24 Bits. This allows

connection from a computer USB to stream music without the

need to purchase additional hardware.

The Crescendo uses Wi-Fi remote control on Apple devices.

This eliminates the line of site problems associated with IR

remote controls.

Crescendo Specications

Inputs: Analog 3 XLR balanced

3 RCA unbalanced

Digital 1 USB Audio

1 SPDIF

Outputs 1 RCA

1 XLR

1 FIXED (Tape)

Input Impedance 1 Million Ohms (Single Ended)

40k Ohms (Balanced)

Output Impedance Main Output 100 Ohms

Tape Output 600 Ohms

Maximum Gain 16dB, 26dB Switchable

Maximum Output 14.6Vrms Balanced

7.3Vrms Single Ended

Frequency Response 20Hz to 20kHz ± 0.2dB

IMD Less than 0.005% @ 1V input

THD Less than 0.01% @ 20n kHz 1V input

Noise > -90dBv 10Hz – 22 kHz

Power Consumption Approximately 37W

Weight 25.0 lbs. (11.3kg)

Dimensions 17.5’’W x 3.5’’H x 15’’D

44.5cm W x 8.9cm H x 38.1cm D

1 2 3 4 5 6 7 8 9 10

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Viola Systems Spirito Reference Series Preamplifier Manual de usuario Pagina 9

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