HIFI现货
HFA-1200 立体声功放
型号: YB-HFA1200
双单声道甲乙类立体声后级，每声道 120 W，阻尼系数 220，全被动散热无风扇。
- Dual mono layout with an independent transformer per channel
- Fully passive convection cooling, no fan noise
- Balanced XLR and single ended RCA inputs with relay switching
- Hand matched output devices, channel balance within 0.1 dB
Ships in 3-5 business days
技术规格
输出
- 声道数
- 2
- 功放类型
- Class AB
- 8Ω 每声道功率
- 120 W
- 4Ω 每声道功率
- 190 W
- 桥接输出功率
- 380 W
实测性能
- 总谐波失真 + 噪声
- 0.005 %
- 信噪比
- 112 dB
- 阻尼系数
- 220
- 频率响应
- 5 Hz - 100 kHz (+0 / -1 dB)
接口
- 输入灵敏度
- 1.0 V for rated output (26 dB gain)
- 输入阻抗
- 47 kOhm unbalanced / 94 kOhm balanced
- 输入接口
- 2x RCA, 1x XLR balanced, 1x 12 V trigger in
- 输出接口
- A/B binding posts, 1x pre-out, 1x 12 V trigger out
机械规格
- 散热方式
- Passive convection, no fan
- 保护电路
- DC offset, over-temperature, short circuit, soft start
- 机架高度
- 3 U
- 外形尺寸
- 440 x 145 x 380 mm
- 净重
- 17.5 kg
产品概述
HFA-1200 立体声功放
The HFA-1200 is a dual mono Class AB stereo power amplifier. Each channel has its own 500 VA toroidal transformer, its own rectifier bank and its own heatsink, so the two channels never share a ground return or a supply rail.
The input stage uses a low noise JFET differential pair followed by a relay switched resistor ladder, which keeps the signal path short and the noise floor at -112 dB. A slow start circuit limits inrush current and protects the output relays.
Every unit is burned in for 48 hours and measured before it leaves the factory. The measurement sheet is included in the box.
