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英国QUAD(国都) II 40 电子管单声道后级放大器

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The Quad II-forty retains the elegance of the 1950s Quad II but with a level of sophistication, a build quality and finish rarely seen on any product old or new. The chassis has been substantially increased in size to accommodate the much larger components, all of which are hard wired by hand following a similar topology to the original. The modern listener demands a higher output than the fifteen watts of the original Quad II. The new Quad II-forty uses larger output valves, KT88s instead of KT66s, and a more robust power supply utilising a 5U4G rectifier valve. The input valves are now military specification 6SH7s instead of EF86s.

All Quad products are expected to last a lifetime – even longer. Many Quad customers still derive immense pleasure listening to products built over fifty years ago. These new amplifiers are no exception and with periodic servicing and a caring hand you can expect the performance of these amplifiers to continue for many decades to come.

 

 


 

 

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技术参数

输出功率 Power Output

40W RMS

总谐波失真 THD @ 700Hz

0.3% @ 40W

0.03% at 1W

讯噪比 Residual Hum and Noise

Better than -80dB

频率响应 Frequency Response

10Hz - 30kHz (+0dB, -0.5dB)

阻尼系数 Damping Factor

20 @ 700Hz (referred to 8 Ohms)

能量消耗 Power Consumption

180VA maximum

输出连接 Loudspeaker Taps

4 and 8 Ohms

真空管 Valves

2 x 6SH7 Input

2 x KT88 Output

1 x 5U4G Rectifier

灵敏度 Input Sensitivity

1V RMS