Bridge tube amplifier ARG 6S33S

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Grzegorz "gsmok" Makarewicz, This email address is being protected from spambots. You need JavaScript enabled to view it.

The amplifier belongs to the group of devices produced in such a small number of copies that it's creator is hardly called a manufacturer. The amplifier does not have any notes or signs and to find information about the person who built it is almost impossible. It turns out that it is the product of (a term a bit exaggerated) manufacturer named ARG. The ARG "company" it is probably one person, Mr. Eugene Kremiński from Lviv. I have not found any corporate website or the official list of ARG products. The only source of information are online "notes" of a few users, or friends of the amplifier's builder. I decided to put the amplifier in the gallery because of its quite unique schematic configuration. It is a circlotron .

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Balanced Monoblocks BAT VK-150SE

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Grzegorz "gsmok" Makarewicz, This email address is being protected from spambots. You need JavaScript enabled to view it.

BAT VK-150S is a powerful tube monoblock offering considerable output power of 150W/4Ω. Let no one be fooled by the "SE" symbol in the amplifier name. It is not Single Ended circuit configuration but only a special version of the device (Special Edition). Unfortunately, I do not know the details that distinguish ordinary amplifier versions of the SE version. Based on expert mentions in the press, the details are very important but supposedly secret .

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Ayon Orion - integrated amplifier (2)

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Grzegorz "gsmok" Makarewicz, This email address is being protected from spambots. You need JavaScript enabled to view it.

Although the Ayon Orion tube amplifier is already presented in the TRIODA Web Gallery, but because of the fact that I had the opportunity to see the interior of the same amplifier, but of very different interior, I decided to share a set of photos with other details of this interesting device.

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Audio Research Classic 60 GB

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Grzegorz "gsmok" Makarewicz, This email address is being protected from spambots. You need JavaScript enabled to view it.

In my private beauty contest of tube amplifiers that have come into my hands, for years the first place take tube amplifiers produced by Radford (especially the STA-25). Amplifiers with lower ratings are separated from Radford by greatl gap. That was until my personal encounter with Classic 60 amplifier, produced by Audio Research. Although compared to "Radford", "Quad" and other old tube amplifiers it is a real lad (construction was established in 1989), its appearance aroused in me a shiver of excitement. No doubt - second place in the ranking .

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Audio Note P1SE

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Grzegorz 'gsmok' Makarewicz

"Cool" tube amplifier and rather unusual for our modern times mechanical design - everything including the charming glowing tubes is carefully hidden inside the black housing. Because there are a lot of photos of the amplifier in closed housing, I decided perversely to use as the main photo dismantled and un-retouched amplifier (dust covering elements is authentic).

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Amplifiers WR40/62 and WR75/62 (Ampli 40 i Ampli 75)

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Written by Andrzej Żółtowski „ZoltAn”, Gliwice, This email address is being protected from spambots. You need JavaScript enabled to view it.
Note: most of the photos can be enlarged tapping on them with the mouse.

In 1963, the State Teletransmission Company in Warsaw started the production of amplifiers marked as WR40/62 (Ampli 40) and WR75/62 (Ampli 75). Very similar to much earlier model WR40 in fact they were improved and completely redesigned acoustic devices. Like their predecessor, amplifiers were intended to create a small broadcasting networks and to use in schools, small factories, large sacred halls, sports stadiums, train stations and events held in the open air.

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Amplifier PZT Type WR-75

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Written by Grzegorz Makarewicz (gsmok), Warsaw, This email address is being protected from spambots. You need JavaScript enabled to view it..

The amplifier, which I would like to present was produced in 1962 in Warsaw, Poland. The physical evidence can be seen below in a form of the metal plate riveted to the housing.

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Amplifier Audio Innovations Series 500

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Grzegorz "gsmok" Makarewicz, This email address is being protected from spambots. You need JavaScript enabled to view it.

The Audio Innovations 500 is a 25 watt Class A tube integrated amplifier. As the name suggests, it was manufactured by Audio Innovations, Brighton, UK. Audio Innovations was founded by Peter Qvortrup and Erik Andersson in 1984. The company produced tube amplifiers from 1984 to 1996. In 1991 Audio Innovations was bought by Audio Components and in 1996 Audio Partnership bought the brand. Series 500 amplifiers originated in the late 80-ies of the last century - at the beginning of the operationon of Audio Innovations in the market.

General view of the amplifier is shown in Fig. 1

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6S33S SE Amplifier on Plywood

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Grzegorz "gsmok" Makarewicz, This email address is being protected from spambots. You need JavaScript enabled to view it.  (written in 2006)

For some time I had the intention to build an amplifier based on the famous "devil" tube 6S33S (6C33C). I heard about this tube a lot of contradictory opinions. The fundamental flaw mentioned, is the time instability of it's parameters.  Unstable anode current during operation of 6S33S tube is a constant theme in almost every discussion board dedicated to electron tubes. With all its disadvantages 6S33S tube is mysteriously attracted for audio designers. Why? I do not know. Probably anyone who used this tube had their own reasons. As for me there are also several important reasons. I will mention one - it looks very cool, and these "devil's horns" - amazing!!!

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