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High quality audio transformers and chokes from Zeos Trafo Lab

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Hello,

We are a team from Bulgaria and we are engaged in manufacture, delivery and installation of professional and home audio systems. Besides that we are engineers - professionals, we are avid melomans and audiophiles. For years we have been looking for the best elements of high - quality audio in the world in order to make our systems to meet our requirements. In this endeavour we identified that one of the most important elements are the high quality windings and transformers, which are not available on the market. This made us to decide to organise their production by ourselves. It took us time to get acquainted with the basics and traditions of this activity, make many tests and experiments, get equipped with the necessary machines, tools and equipment, and to take on board the most modern technology innovations available. The time and effort invested brought excellent results. Now we are able to produce almost all windings used in high-quality audio equipment of extraordinary quality: output transformers for tube, hybride and solid state amplifiers, linear and interstage transformers, anode and power chokes, power transformers. They are made of high-quality materials, with extreme precision and large amount of accurate manual processing. We use Si or nanocrystalline iron cores with singe C-core construction, Nomex insulation, all fasteners are non-magnetic, including the housings in which the products are being impregnated. The creation of these products required significant R & D. They are also very sophisticated and use many special materials at a significant cost of delivery. The cost of our products directly reflects the cost of the materials involved in its production and the time it takes to manufacture it. The prices at which we offer our products currently are lowered as part of our promotion campaign, targeting both DIYers and professionals. Please let us know if you are interested in our above proposal or in case you have questions.

Bozhidar Bozhanov

ZEOS TRAFO LAB
 
These are some of our products. The last two images are the housings in which we place our products, respectively aluminum and steel.

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This is a sample table of products that we can produce. Some parameters are in minimum values, but in fact they are much higher. This is due to data loss on our part. Later I will give specific output transformers with accurate prices for example. If you have any interest in specific items on or outside the table, please email me personal messages.

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These are sample prices at the moment of several of our output transformers. They are all made with a nanocrystalline core. We have the option of making them with Si steel, and prices will be lower. They will be recalculated and the parameters will be different, most of them better, but, the sound of transformers made with nanocrystalline iron outperforms those made with Si steel.

QSN10-10
Nano metal single C-core, for SE 2A3 or similar tube in triode
2.76kOhm / 6Ohm, 3.68kOhm / 8Ohm
60mA, 24H
Rdc: 132Ohm
Price: 329 EUR with VAT, Promotional price: 230EUR with VAT

QSN10-30
Nano metal single C-core, for SE 300B or similar tube in triode
3.5kOhm / 6Ohm
Rdc: 182Ohm
70mA, 30H
Price: 343EUR with VAT, Promotional price: 240EUR with VAT

QSN10-33
Nano metal single C-core, for SE 300B or similar tube in triode
3.71kOhm / 8Ohm,
100mA, 32H
Price: 564EUR with VAT, Promotional price: 395EUR with VAT

QSN20-25
Nano metal single C-core, for PP 300B or similar tube in triode
5kOhm / 6Ohm, 40W
150mA, Rds: about 120Ohm
Price: 600EUR with VAT, Promotional price: 420EUR with VAT

Production time: from 1 to 4 weeks. All costs (packaging, etc.) are included in the price, excluding shipping. Shipping: DHL, UPS, TNT and DPD. We are located in Sofia, Bulgaria and the price will depend on the distance.
For EU countries, VAT is charged at the rate of 20% of the value included in the price. For non-EU countries this tax is deducted.
 
New real High End output transformer SE for 300B or similar tubes with nanocrystalline core.

QSN10-31

Inductance of the primary coil: 26.157H
Turns ratio: 24.2
Primary impedance: 3.5kΩ
Secondary load impedance: 6Ω
Bandwidth (-3bd, secondary grounded): 20H - 73kHz
Leakage inductance: 3.1mH
Parasitic capacitance: 3.58nF
Primary DC resistance: 137Ω
Secondary DC resistance: 0.099Ω

Price: 550EUR with VAT, Promotional price: 385EUR with VAT
 

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