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DIY Project : Elekit TU-8200 Tube Amplifier Kit (SE 6L6).

Over the past several years I have been enjoying an Elekit TU-879S Stereo Tube Amplifier Kit paired up along side of Fostex FE206E high sensitivity speaker drivers in Dallas rear-loaded horn enclosures. I put a number of hours on the Elekit TU-879S, enough to fully consume the stock EH 6L6 tubes and to cycle through a number of power tube sets before deciding on JJ EL34 blue glass tubes. Throughout this time the Elekit TU-879S amplifier has been reliable and a good performer sonically so it was disappointing to hear that the popular TU-879S tube amp kit had been discontinued.

However, there is good news – the follow-up tube amplifier kit to the Elekit TU-879S, the Elekit TU-8200 is now available from TubeDepot (USA). The renowned Elekit designer, Mr. Fujita, has gone back to the drawing board to design a superior tube amplifier kit from top to bottom. The Elekit TU-8200 will allow the kit builder to enjoy fine tube audio sound in just a few evenings.

Some of the improvements over the Elekit TU-879S tube amplifier kit include:

• Three Selectable output modes – Ultra-linear, Triode, or Pentode by changing a jumper on PCB.
• TU-8200 kit ships with a R-core power transformer that supports 100V, 115V, 200V, and 230V mains.
• Improvements to the audio and power supply circuitry.
• Headphone output.
• Optional Elekit PS-3249 DAC to decode audio from computer USB source.

The Elekit TU-8200 tube amplifier kit ships with Electro-Harmonix 6L6GC power tubes, but will also accept a wide range of other power tubes such as 6CA7, EL34, KT66, KT77, KT88, 6550 (and more) with no modifications and no need to re-bias.

Elekit TU-8200 Main Specifications:

• 2 X 12AU7, 2 X 6L6GC (can also use 6CA7, EL34, KT66, KT77, KT88, 6550)
• Output Modes: Ultra-linear, Pentode or Triode mode
• 6L6GC (Ultra Linear) 8W + 8W (8 ohms)
• 6L6GC (Pentode) 8.2W + 8.2W (8 ohms)
• 6L6GC (Triode) 4W + 4W (8 ohms)
• Speaker Impedance: 4-6.3 ohm and 8-16 ohm
• Headphone: Standard jack (6.4mm DIA)
• Power Consumption: 60W (with 6L6GC)
• Weight: 14.55lbs (6.6 kg)
• Dimensions: Width 9.92″ (252mm) x Height 6.22″ (158mm) x Depth 11.22″ (285mm)

At $699US (April 2014) the new Elekit TU-8200 tube amplifier kit looks quite tempting. What I like most about the TU-879S tube amplifier was the seemingly endless amount of tube combinations that were possible. With the TU-8200 tube amp kit and the ability to select between Ultra-linear, Pentode or Triode output modes, the number of possible tube combinations are endless.

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