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Tube amplifier MV3

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Photographs and description by Zoltan.
(Andrzej Żółtowski, This email address is being protected from spambots. You need JavaScript enabled to view it.).

Mass-produced in the sixties by the East German company VEB Kligenthaller Harmonikawerke (later VERMONA) in Kligenthall, two inputs, microphone - instrumental amplifier MV3, despite the relatively small (12W) output power was extremely successful device in its class.

With the forming of the complete audio system, broadband loudspeaker, MV3 amplifier was the object of sighs and dreams of most chamber music groups, both amateur and professional, from those years because of an exceptionally dynamic and wonderfully "full" sound.

Audio Note P1SE

Details: Category: Gallery; Hits: 8153

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).

Low Frequency OTL Amplifier

Details: Category: Articles; Hits: 8711

Low Frequency OTL Amplifier
L. Kononowicz, Candidate of technical sciences (translation A. W.),
Radioamator 1959/11

In recent years, both works in the Soviet Union and abroad have been carried out on the construction of devices (including audio amplifiers) providing amplification and reproduction of sound with little distortion. In the initial stages of low frequency amplifiers, due to the low signal voltages occurring there - non-linear distortions are small, and frequency distortions can be lowered by choosing the appropriate values of the amplifier elements. The largest distortions arise in the output stage of the amplifier, the main cause being usually the output transformer. The output transformer limits the range of the frequencies to be reproduced.

Triode Loadline Simulator

Details: Category: Software tools; Hits: 8792

The program allows to determine the optimal operating point of a triode. It does not require installation and can be run by most web browsers. This is the first version of the program, which will be extended with new opportunities.

6S33S SE Amplifier on Plywood

Details: Category: Gallery; Hits: 9244

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!!!

6N1P OTL Headphone Amplifier

Details: Category: Gallery; Hits: 9659

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

This description relates to a headphone amplifier based on a very popular White Follower scheme. There are plenty of amplifiers of this type you can find in electronic books and Internet. Among the most popular there may be mentioned circuits described on HeadWize site dedicated to headphone amplifiers. The description is not completed yet. I left it unfinished deliberately, as a place to conclusions accompanying this here THREAD on TRIODA Forum. Because of this, description is a bit chaotic, and I apologize for that all visitors. Ultimately these shortcomings will be removed.

HAROLD - Retro Style Amplifier

Details: Category: Gallery; Hits: 9721

Jacek "Jado" Domański (e-mail : )

The idea to make a small tube amplifier for home use walked with me for a long time. In the absence of spare time I moved the start of a work date indefinitely, but in the end it was "the happy moment" that I could begin construction work. One of the main goals of the project, was to build an amplifier using owned materials and components and bargain shopping - in other words to bulid an amplifier at minimal cost, but with a significant contribution of my own "labor". Another assumption was, that the amplifier can not be a high energy consumption device - so that the moderate daily use does not cause excessive burden on the household budget. So it had to be something simple ...

Tube Amplifier Yaqin MC-100B

Details: Category: Gallery; Hits: 9808

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

Yaqin MC-100B is a Chinese stereo tube amplifier. It's original name, which is a registered trademark, has some strange symbols and you can not write it using "traditional" alphabet. Willy-nilly, in this relation I am forced to use the Yaquin name. This approach is justified because even in the manual, strange symbol appears on the cover, but in the inside you can find the name Yaqin MC-100B. The amplifier does not has sophisticated look. The distinctive frame constituting the tubes cover reminds me of a container for storing bread and willingly I would use this amp with a frame permanently dismantled and hidden in some inaccessible place.

WAVAC MD-300B

Details: Category: Gallery; Hits: 9887

Grzegorz "gsmok" Makarewicz

Very interesting and exclusive design. I must admit that until the amplifier hit in my arms I do not even realize that any copy of it is located in Poland. And suddenly such a pleasant surprise. I invite you to analyze the photographs showing construction details.

Cary Audio CAD-805

Details: Category: Gallery; Hits: 9901

Grzegorz "gsmok" Makarewicz, This email address is being protected from spambots. You need JavaScript enabled to view it.
(updated 12.10.2017r.)

Interesting tube monoblocks combine a rational approach from the technical point of view with some audiophile's "bells and whistles". The amplifier (produced by American company Cary Audio Design) that came to my hands probably comes from the early stages of production. I do not know when the first copies appeared - probably around 1994, because at that time Stereophile magazine (01/1994) published a detailed review and measurement results.

Trioda/Triode

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