Yamamoto Sound Craft single stereo amplifier

VT-52 has been talked about as a hidden symbol among mania as a triple tube with great sound quality. It is no exaggeration to say that the VT-52 that strengthened 45 for use in military transmitters has the highest level of sound quality among the number of triple tubes. The A-010 was designed to maximize the performance of such VT-52.

The A-010 is a luxurious look with Muku wood. The rectification tube employs four 80 pcs, and one rectifier is built. It eliminates the mutual interference of the power supply and speeds up the power supply response.
The A-010 consists of the input capacitor of this 80 rectifier with only a small value of only 2μF in the driver tube, and adopts the high performance current regulator of Ixis Inc., USA. The chalk coil of the output circuit is discontinued and the filter circuit using only RC is configured. The configuration of these power supply parts improves the amplifier's own operating speed, resulting in a clearer sound that is more speedy.

The A-010 adopts a high performance 5-pole tube C3m made in Germany as a driver tube. With a guaranteed lifetime of 10,000 hours, long-term stable use can be expected.
C3m, the heater circuit of the VT-52 vacuum tube is DC ignition by double wave rectification to minimize noise, and it is a heater power supply with a clean and fast response speed by adopting constant current circuit using Ixis high performance MOS-FET. The output transformer uses a custom 100 micron thick core material with Teflon insulation paper to roll the coil and improve sound quality.
The capacitors and resistors used are carefully selected and selected for the best sound quality selected by listening. The output terminal supports banana plug by large gold plating shaving.

Even old sound sources of nearly half a century do not feel the powerful reproduction power, the grating part and the cheap sound. As if the vocals were singing in front of you, it makes me taste the life. Without dropping the decency of the accompaniment, only the vocals are released in front of them, and the accompaniment seems to stand out skillfully. The speaker terminal is only the 8Ω output terminal, 4Ω there is nothing wrong with using the 16Ω speaker. However, the maximum output will be lowered in either case. If it is the maximum output of the 8W, it will be the 4-6W output.

Classical, Weil "Seven Great Sins," the neck squeezes into the vivacity and color that Giesella Mai sings in front of her. It is an image that was taken nearly half a century ago, but it was sent to the room together to the air of the time. While listening to Mai's voice recreating the force that comes before the speaker, it does not make me feel the impaired part or the cheap sound. and the ability of a ball called VT-52Yamamoto Sound CraftIt seems that the authenticity of the creation is also significant in contributing to the expression.
Jazz listens to Georges Patchinsky's Presence. I was surprised that the familiar software sounded like I woke up again. I wonder if the piano was so glossy, the wood bass was playing so much, the drums were so rhythmic. It is such a wonderful expression that the performer can see that he enjoys music from the heart.
Pops listened to Emi Fujita's Chamomile Smile. This also made me feel as if I had invited a diva to the room as if it were classical. Such expressions are not quite available in other amplifiers. It is often felt with a well-made vacuum tube amplifier, but when listening to a vocal thing, only the vocal goes forward without dropping the decency of the accompaniment, and there is a way to make the accompaniment skillfully stand out. For those who want to listen to a song, it will be an amplifier that you can not let go once you listen.
* Excerpt from analog magazine