AUDIO RESEARCH VT150 Valvulado Class A 130 Watts

Preço Retail USA: $ 12,000.00
Preço tabela Brasil: R$ 47.000,00

R$ 39.900,00

12x de R$ 3.927,82
SKU: AUDIORESEARCHVT130SESILVER Categorias: , ,

    Descrição

    COR: PRETO
    CONDIÇÃO: USADO
    Estado de conservação: 9/10
    VALVULADO: SIM

    Power amplification in a new key. The VT150 Special Edition mono-blocks and VT130 Special Edition stereo amplifier represent the latest advancements in vacuum-tube power amplification from legendary designer William Z. Johnson. Both models take advantage of breakthroughs in transformer lamination and improved plate coupling to yield wider bandwidth, better power transfer at the output, and superb bass control. They also combine meticulous engineering and manufacture (typical of Audio Research), generous power output and user convenience in classically handsome electromechanical packages. These are power amplifiers intended to withstand the rigors of musical playback over the course of many years, while providing unequalled enjoyment.

    The buyer’s only dilemma is the choice between the ultimate soundstaging and musical dynamics made possible by the dual-monoblock approach, or the space-saving (but sonically remarkable) single-chassis stereo design. Both models are housed in incredibly rugged, heli-arc welded and anodized aluminum chassis more typical of aircraft construction than of typical hi-fi gear. Both models afford excellent performance with a wide variety of contemporary loudspeaker designs, and offer a range of output impedance options via their rugged, custom-machined terminal connections.

    Output-stage biasing is easily maintained in both models by illuminated meters and rotary controls conveniently located on the front panel. A.C. powerline monitoring is also offered via a second meter.This means that the owner can effectively bias the output stage of the amplifier(s) depending upon A.C. line conditions as well as regularly monitor the condition of individual output tubes. All in all, it’s a convenience which actually helps keep performance at absolute peak month-to-month, year-to-year.

    Standard versions: Beauty to charm the ear and becalm the budget. The VT150 monoblocks and VT130 stereo amplifier are each available in less-costly standard versions which offer near-equivalent performance at lower cost. Lacking are the cosmetic enhancements, and, in the case of the VT130 stereo, the front-panel biasing system and A.C. monitoring found on the “SE” version. The VT150 monoblock retains the biasing system with a smaller meter, but lacks A.C. monitoring. Chassis grade, input and output connectors, and internal level of finish are equivalent or identical in both standard and SE versions.

     

    Power output130 watts continuous at 16 ohms from 20Hz to 20kHz with less than 1.0% total harmonic distortion (typically below .05% at 1 watt). Approximate actual power available at “clipping” 145 watts (1kHz)
    Power bandwidth(-3dB points) 12Hz to 80kHz
    Frequency response(-3dB points at 1 watt) 2Hz to 200 kHz
    Input sensitivity2.3V RMS balanced for rated output
    Input impedance200K ohms balanced
    Output taps 
    Output regulationApproximately 0.5dB 16 ohm load to open circuit
    Overall negative feedback15 dB
    Damping factor16
    Distortion 
    Slew rate17 volts/microsecond
    Rise time2.0 microseconds
    Hum & noiseLess than 0.5mV RMS (98dB below rated output, IHF weighted, input shorted)
    Power supply energy storage420 joules
    Power requirements110-125VAC 60Hz (220-250VAC 50Hz) 470 watts at rated output, 600 watts maximum, 290 watts at “idle”
    Tube complement(2 matched pairs) 6550, (2) 6550 regulators, (1) 12AX7 regulator amplifier, (4) 12BH7A driver, (2) 6922 input
    Other 
    DimensionsVT150: 141/2″ (37 cm) W x 12″ (30.5 cm) H x 22″ (56 cm) D. Knobs extend 5/8″ (1.6 cm) forward. Output connectors extend 1″ (2.5 cm) to the rear
     VT150SE: 15.5″ (39.4 cm) W x 10.9″ (27.7 cm) H [10.5″ (26.7 cm) panel + .4″ (1 cm) feet] x 22.75″ (57.8 cm) D behind panel, including rear handles. Front handles extend 1.5″ (3.8 cm) forward of .38″ (1 cm) thick panel
    WeightVT150: 62 lbs. (28.2 kg) Net; 82 lbs. (37.3 kg) Shipping.

    Informação adicional

    Peso35 kg

    Escala de classificação

    Novo – Item lacrado na caixa.

    Demo – Item tirado da caixa apenas para demonstração aos clientes pela equipe da HIFICLUB. Não foi utilizado ou manuseado por clientes. O item está em perfeito estado estético e de funcionamento. Não sofreu qualquer reparo ou modificação. Usado como demo pelo tempo máximo de 3 meses.

    9/10 – Item praticamente novo e com pouco uso. Estado geral excelente. Item em perfeito funcionamento. Não sofreu qualquer reparo ou modificação.

    8/10 – Item em muito bom estado. Numa vistoria minuciosa, é possível encontrar alguns detalhes estéticos, como sutis marcas de uso. Pode apresentar um pequeno risco, mas, nunca em áreas mais visíveis do item, como a parte da frente de um aparelho ou caixa de som.

    7/10 – Item em bom estado. É, visivelmente, um item usado, porém, bem cuidado. Pode ter marcas ou riscos, no entanto, nunca em áreas mais visíveis.