编号 96094855

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Technics - 苏玛10级AA 固态双单声道功率放大器
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2周前

Technics - 苏玛10级AA 固态双单声道功率放大器

Ariel Cabello

估价 € 1,000 - € 1,300

由Ariel Cabello精选
For sale Technics su-ma 10 made for the Japanese market and sold under the Panasonic name 100 volt alternating current. Digital straight amplifier with twin monaural configuration using D. D. D. D. Uses D. D. D. (Digital Direct Drive) system. In this method, unlike conventional amplifiers with only a DAC mounted on them, the output signal of the DAC is increased to the voltage of the required sound level, and it is directly connected to a power amplifier with an amplification degree of 1 (0 dB) without going through the amplification path of the analog source. As a result, the output voltage of the DAC part is equal to the voltage of the speaker terminal, and excellent transmission characteristics are achieved. In addition, in order to operate the 0 db power amplifier stably, it uses a combination of Technics original classAA and floating power supply to realize an S/N ratio of 140 db in the power amplifier section. The D. D. D. cannot perform normal volume control, so a high voltage I/V converter is mounted on the DAC output as a voltage variable means. By changing the conversion ratio, the output voltage can be varied to adjust the volume. MASH1-bit DAC is used for the D/A conversion part. Mash reduces re-quantization noise in the audible frequency band by over-sampling 16-bit input data with a digital filter and then noise-shaping it. In addition, the PWM method, which in principle does not generate non-linear distortion such as 0 cross distortion, enables D/A conversion with extremely high accuracy, and enhances the reproduction capability of small signals, which tend to be buried in distortion components of high-level signals. In order to reduce the jitter distortion in the digital transmission path, which is a problem in the amplifier with built-in DAC, a unique digital interface receiver is installed. This circuit reduces the jitter distortion by adopting the VCXO method using quartz with extremely high oscillation accuracy. It is also equipped with a 2-PLL system with two VCoS to provide a 2-mode / 2-PLL system. The VCXO system is automatically selected for sources with high oscillation precision such as CD players, and the 2-PLL system is automatically selected for sources with low oscillation precision. The power supply section is equipped with a 300 VA high-capacity transformer independently on the left and right sides. This transformer is used with a magnetic flux density approximately 30% lower than usual, minimizing mechanical vibration and magnetic radiation. A newly developed X-Pro twin capacitor is used for the electrolytic capacitor. Two electrolytic capacitors for the positive and negative power supply are enclosed in a resin case with a copper cap. The capacitor is filled with vibration absorbing material to reduce mechanical vibration and electromagnetic radiation. The power amplifier section has a twin monaural configuration in which the left and right sides are independent. In addition, the preamplifier section and digital section have a T-shaped configuration with a tight shield. This minimizes interference between the left and right channels caused by electromagnetic waves from the large current of the power amplifier section, and prevents noise from entering the final 0 db amplifier. In addition to digital inputs of two optical and two coaxial systems, four analog inputs are installed. Type Digital straight amplifier Power Amplifier Unit Effective power 100W + 100W (6 Ω, 20 Hz to 20 kHz, T. H. D 0.007%) Total harmonic distortion factor 0.003% (20 Hz to 20 kHz -3dB, 8 Ω) Damping factor 110 (8 Ω) 55 (4 Ω) Preamplifier Section Frequency characteristic Tuner, aux1/2, tape, DAT : 0.8 Hz to 120 kHz + 0 to 3 dB 20 Hz ~ 20 kHz + 0 -0.2 dB Input Sensitivity / Impedance Tuner, aux1, tape, DAT : 150mV/100k Ω aux2 : 150mV/22k Ω Signal-to-noise ratio Tuner, aux1/2, tape, DAT : 105 dB (IHF' 66) Digital Part Total harmonic distortion factor 0.005% or less (EIAJ) Frequency characteristic 2 Hz to 20 kHz ± 0.3 dB some inscriptions on the front are worn out signs of use are visible, minor scratches Pwer 100 VAC, 50Hz/60Hz Power consumption 250W External dimensions Width 430x Height 186x Depth 433 mm Weight 25.0kg rarely available Beautiful and powerful Sound optical input requires converter, min. 700 W preamp input also available, which is not found on the European version sent in carefully wrapped foam packaging Just shipping in Europa!

编号 96094855

已不存在
Technics - 苏玛10级AA 固态双单声道功率放大器

Technics - 苏玛10级AA 固态双单声道功率放大器

出售Technics SU-MA10,专为日本市场制造,并以松下品牌出售。
100伏交流电。

数字直线放大器,采用双单声道配置,使用D. D. D. D.

采用数字直驱(D. D. D.)系统。
在这种方法中,与传统的仅配备DAC的放大器不同,DAC的输出信号被放大到所需音量的电压,并直接连接到增益为1(0 dB)的功率放大器,而不经过模拟信号源的放大路径。因此,DAC部分的输出电压等于扬声器端子的电压,实现了优良的传输特性。
此外,为了稳定操作0 dB功率放大器,它采用Technics原装的Class AA和浮动电源相结合,在功率放大器部分实现140 dB的信噪比。
D. D. D.无法进行正常的音量控制,因此在DAC输出端安装了高压I/V转换器,作为电压可调的方法。通过改变转换比,可以调节输出电压以调整音量。

MASH1位DAC用于D/A转换部分。
Mash通过对16位输入数据进行过采样并采用数字过滤,再进行噪声整形,从而在听觉频带内减少再量化噪声。此外,PWM方法原则上不会产生0交越失真等非线性失真,实现了极高精度的D/A转换,并增强了对较弱信号的再现能力,避免其被高水平信号的失真成分所掩盖。

为了减少数字传输路径中的抖动失真,这是内置DAC放大器中的一个问题,安装了一个独特的数字接口接收器。该电路采用具有极高振荡精度的石英晶体的VCXO方法,减少了抖动失真。
它还配备了具有两个VCoS的2-PLL系统,以提供两种模式/两PLL系统。对于具有高振荡精度的信源(如CD播放器),自动选择VCXO系统;对于振荡精度较低的信源,自动选择2-PLL系统。

电源部分配备了左右两侧各自独立的3百伏安高容量变压器。此变压器的磁通密度大约比平常低30%,以减少机械振动和磁辐射。
新开发的X-Pro双电容器用于电解电容器。用于正负电源的两个电解电容器被封装在带有铜帽的树脂壳体中。电容器内部填充了减震材料,以减少机械振动和电磁辐射。

功率放大器部分采用双单声道结构,左右声道相互独立。此外,前置放大器部分和数字部分采用T形结构,并配有紧密的屏蔽。这最大程度地减少了由功率放大器部分大电流产生的电磁波对左右声道的干扰,并防止噪声进入最终的0 dB放大器。

除了两个光学和两个同轴系统的数字输入外,还安装了四个模拟输入。
数字直线放大器
功率放大器单元
有效功率 100W + 100W(6 Ω,20 Hz 至 20 kHz,总谐波失真 0.007%)
总谐波失真系数 0.003%(20 Hz 到 20 kHz -3dB,8 Ω)
阻尼系数 110(8 Ω)
55(4 Ω)
前置放大器部分
频率特性:调谐器、辅助输入1/2、磁带、DAT:0.8 Hz 至 120 kHz + 0 至 3 dB
20 Hz ~ 20 kHz + 0 -0.2 dB
输入灵敏度/阻抗 调谐器、辅助1、磁带、DAT:150mV/100kΩ
aux2:150mV/22kΩ
信噪比 调谐器,辅助输入1/2,录音带,DAT:105 dB(IHF' 66)
数字部分
总谐波失真因子:0.005%或更低(EIAJ)
频率特性:2 Hz 至 20 kHz ± 0.3 dB
正面的一些铭文已经磨损了。
使用痕迹可见,轻微划痕
功率 100伏交流,50Hz/60Hz
功耗 250W
外部尺寸:宽430 x 高186 x 深433毫米
重量:25.0公斤
很少有
美丽而强大的声音光学输入
需要转换器,最低700 W
也提供前置放大器输入,欧洲版本中未提供。
用精心包裹泡沫包装寄出
仅在欧洲发货!

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