Yamamoto Sound Craft " 2A3" single stereo amplifier A-011

In A-011, the circuit to demonstrate 100% the ability of the 2A3. Equipped with two series input volumes, it is the simplest and highest quality system to directly connect the CD player to achieve the highest quality. The A-011 consists of only one vacuum tube for both driver and output stages, so when you connect the CD player, the sound of the CD is played through only two vacuum tubes.

Improved sound quality by adopting 717A to the driver tube and "80" with good sound in the rectifier tube.

In addition to using regular preamplifiers to control the level of input, you can connect not only CD players but also analog equalizer amplifiers and other input devices if the gain is a little larger.
The 717A,2A3 vacuum tube heater circuit is a DC ignition with double wave rectification to minimize noise, and the rectifier adopts a large-capacity Schottky diode with ultra-low loss from the US International Lecture Fire. The A-011 provides an energetic and powerful sound due to its low impedance It is.

The toroidal power transformer with excellent regulation and the high-beam cut-core output transformer provide excellent sound.
Most of the capacitors, including the power supplies used in the A-011, use specially selected film capacitors to minimize the use of inferior chemical capacitors. The resistors also carefully select high-quality sound parts such as DALE's winding resistance, metal clad resistance, and large-capacity surface mounting resistance. This machine is designed to obtain maximum output 4W at about 0.4V input voltages.