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The 2A3 Tube Amplifier - A Tribute to Simplicity and Warm ...
https://audioxpress.com/article/the-2a3-tube-amplifier-a-tribute-to-simplicity-and-warm-sound
The 2A3 vacuum tube is a power triode capable of outputting 3.5 W in a single-ended Class A configuration. In this project, the 2A3 power tube runs at a 60-mA plate current with no signal applied and has a 410-V plate voltage. The output transformer’s primary impedance is 3.3 kΩ (see Figure 1).
KR Audio 2A3-HP High Performance - Pair (2 matched tubes)
https://www.tubeampdoctor.com/en/kr-audio-2a3-hp-high-performance-pair-2-matched-tubes
KR Audio 2A3-HP High Performance - Pair (2 matched tubes) This is a High Performance version of the excitsting 2A3 version by KR Audio, originally only available in the USA. The KR Audio 2A3 HP tube is fully compatible with any well designed 2A3 amplifier and sonically delivers exactly what owners of these special amps expect.
SunAudio 2A3 to 300B | diyAudio
https://www.diyaudio.com/community/threads/sunaudio-2a3-to-300b.127909/
A 2A3 SET is good for around 4.0 - 4.5 watts and the voltages and biasing used in the 300B version of the Sun amp will result in about 6.0 watts, no more. That results in an increase of 1.75dB, which isn't much from a SPL view. Regards, KM. •••.
2A3 Tube Opinions - High-End Audio Discussion Forum
https://forum.audiogon.com/discussions/2a3-tube-opinions
Arthur, There are a lot of different 300B amps out there that sound better, to me, than the Sophia, but, decent amps are somewhat costly because they employ quite expensive output transformers. Among the most common low-powered triode tube types--the 300B, 2a3, and the 45, I personally like the sound of the 45.
SUN AUDIO SV-2A3 amplifier - D a r k L a n t e r n
https://darklanternforowen.wordpress.com/2017/12/31/sun-audio-sv-2a3-amplifier/
SUN AUDIO SV-2A3 amplifier. Posted on December 31, 2017 by darklanternowen. This Japanese single-ended, vacuum tube amplifier can be purchased in ‘kit’ form or fully assembled. Power output is 3.5 watts/channel. Supplied with Russian Sovtek tubes – 2A3 (2), 6SN7 (2), 5U4G (1). Amplifier weight is 16 kgs.
The Audio Eagle - The Beauty of Single Ended 2A3 Amps
https://www.theaudioeagle.com/columns/column01.html
the room with big sound. The mids are the sunny side of 2A3 single-ended triode amps. Smooth and creamy, human voices shine and if the recorded performance captured it, 2A3 amps deliver the emotion and drama that define a music lover's Mecca. Take "Amazing
Retro 2A3 - Gearspace.com
https://gearspace.com/board/mastering-forum/456419-retro-2a3.html
The RETRO 2A3 is really a heavy piece. ... not liking this equalizer. The Fearn VT4/VT5 is perhaps the only piece of audio equipment that I have wanted to sell my body on the street for. ... I love it. As mentioned, the top end is where the magic is. Great for opening up a mix, adding sparkle to OHs, air to vocals, etc. The bottom end is much ...
Sunaudio SV-2A3 - 悅聲音響 REFERENCE AUDIO
http://www.hifigaga.com/?page_id=570
The Sun Audio SV-2A3 is approached with a very minimalist design, which conforms to the “less-is-better” rule of hi-fi. The chassis is clad in an understated shade of grey, with a gold-hued front panel which houses nothing more than two volume control knobs for left and right channels respectively and a flick on-off power switch.
Sun Audio - BiG-NET
https://www2.big.or.jp/~sunaudio/index_e.html
Sun Audio. Welcome to Sun Audio. Last Update : December 13, 2015 / You are the st visitor since June 10, 1997. Announcement. We would like to inform you that our SV-2A3 power amplifier appears in Stereophile magazine (June 2000, Vol.23 No.6 & November 2004, Vol.27 No.11) at "Sam's Space" . please click on the small pictures!!
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