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山本音响工艺“ 2a3 ”单立体声放大器A-011

产品代码: ys-a111-4

山本音响工艺“ 2a3 ”单立体声放大器A-011

正常价格 ¥443,000 円
正常价格 销售价格 ¥443,000 円
本店特价 售罄
含税。 配送费结账时计算。
附属输出管
电源电压
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成为订单生产产品。 交货时间大概在5~6个月左右。

带音量功率放大器

通过直接连接CD播放器获得最佳音质!

五十

A-011是为了使2a3的能力100%发挥的电路。 它是最简单和最优质的系统,具有双连式输入音量,可直接连接CD播放器以获得最佳质量。 A-011驱动器级和输出级都仅由1个真空管构成,所以连接CD播放器后,CD的声音只通过2个真空管播放。


驱动管采用717a,整流管采用声音良好的“80”,提高音质

使用通常的前置放大器来控制输入电平,不仅是CD播放器,如果增益稍大,还可以连接模拟均衡器放大器和其他输入设备。
717a、2a3真空管的加热器电路采用双波整流DC点火,以使噪声降至最低,整流器采用美国国际整流器公司生产的超低损耗、大容量肖特基二极管,采用A-011 由于其低阻抗,获得了充满活力和震撼力的声音。

采用了调节性能出色的特洛伊达电源变压器和高比型切割磁芯输出变压器,实现了出色的声音。
包括A-011所使用的电源在内的大部分冷凝器均采用经过严格挑选的特制薄膜冷凝器,尽量减少音质较差的化学冷凝器的使用。 ,电阻器也严格使用了DALE公司的绕线电阻、金属包覆电阻、大容量表面贴装电阻等高音质部件。 该器件设计用于在约0.4V输入电压下提供4w的最大输出功率。

spec
形式 2a3单立体声功率放大器
使用真空管 2a3(也有RCA2A3附属型)2枚、717a 2枚、80 1枚
最大输出功率 4 w + 4 w
频率特性 20- 30khz (1w输出时)
输入灵敏度 0.4V输入时输出4w
增益 24.5 db
输入音量 100kΩ2连A型音量
输入阻抗 100 k ohms
尺寸 400 (w) 294 (d) 204 (h) mm
重量 14.3公斤

Customer Reviews

Based on 3 reviews
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R
Russel K.
A Really Special Amplifier

This is a really special amplifier to me. I appreciate its purity, clarity, tone and solidity of sound. It sounds pure, vital and natural.

The Yamamoto A-011 2A3 amplifier sounds much more powerful than I expected from an amp outputting 4 watts per channel. In addition it is dead quiet with no hum at all. I also have a Line Magnetic 518IA (22 watts per channel) and Quicksilver Horn Monos (25 watts per channel) and though they have more power, to me the Yamamoto A-011 supersedes them in purity, clarity, solidity of sound and quietness of operation.

The Yamamoto A-011 has a very high quality build and looks and feels beautiful in an understated way.

Out of all my amplifiers I keep returning to listen with my Yamamoto A-011! In my opinion, this amplifier is a gift from the audio gods!

In addition, as an overseas buyer I found the service at ExAudio to be exemplary, with special thanks to Takuhiro Yoshizawa!

For some good tube rolling recommendations check out Glow In The Dark Audio: http://glowinthedarkaudio.***

B
Bruno. P.
Amazing result!

I have an update: after 100/120 h, I replaced the RCA tubes with Shuguang 2A3C (80 USD approx).
Amazing result! Never heard so real and natural.

B
Bruno. P.
really great

It has been working for a week and it is really great.
It probably still needs breaking-2in, however it is already at the level of its 2 wonderful competitors: Ayon Crossfire Mono modified(sort of 300B with doping: 30wpc) and CF Audio 2A3 modified(silver wired and custom transformers. 4wpc).
Kharma Exquisite Mini speakers.